/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/added_bound_to_unbounded/pthread_reorder_2_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 22:00:15,873 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 22:00:15,954 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 22:00:15,961 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 22:00:15,962 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 22:00:15,962 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 22:00:15,963 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 22:00:15,991 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 22:00:15,992 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 22:00:15,995 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 22:00:15,996 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 22:00:15,996 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 22:00:15,997 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 22:00:15,998 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 22:00:15,998 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 22:00:15,998 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 22:00:15,998 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 22:00:15,999 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 22:00:15,999 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 22:00:15,999 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 22:00:15,999 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 22:00:16,000 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 22:00:16,000 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 22:00:16,000 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 22:00:16,001 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 22:00:16,001 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 22:00:16,001 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 22:00:16,002 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 22:00:16,002 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 22:00:16,002 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 22:00:16,003 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 22:00:16,003 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 22:00:16,003 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 22:00:16,004 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 22:00:16,004 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 22:00:16,004 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 22:00:16,004 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 22:00:16,004 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 22:00:16,004 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 22:00:16,004 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 22:00:16,005 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 22:00:16,005 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-03 22:00:16,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 22:00:16,239 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 22:00:16,241 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 22:00:16,242 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 22:00:16,242 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 22:00:16,243 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread_reorder_2_bound2.i [2023-08-03 22:00:17,318 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 22:00:17,553 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 22:00:17,554 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread_reorder_2_bound2.i [2023-08-03 22:00:17,586 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/baabecb0c/bb6f522b488143b38a3ba7de26910526/FLAG04f0cb880 [2023-08-03 22:00:17,601 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/baabecb0c/bb6f522b488143b38a3ba7de26910526 [2023-08-03 22:00:17,603 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 22:00:17,605 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 22:00:17,605 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 22:00:17,606 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 22:00:17,608 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 22:00:17,609 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 10:00:17" (1/1) ... [2023-08-03 22:00:17,610 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48752a50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:00:17, skipping insertion in model container [2023-08-03 22:00:17,610 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 10:00:17" (1/1) ... [2023-08-03 22:00:17,662 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 22:00:18,233 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread_reorder_2_bound2.i[59849,59862] [2023-08-03 22:00:18,234 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 22:00:18,244 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 22:00:18,266 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [133] [2023-08-03 22:00:18,286 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [510] [2023-08-03 22:00:18,287 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [510] [2023-08-03 22:00:18,315 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread_reorder_2_bound2.i[59849,59862] [2023-08-03 22:00:18,315 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 22:00:18,392 WARN L667 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 22:00:18,398 INFO L206 MainTranslator]: Completed translation [2023-08-03 22:00:18,398 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:00:18 WrapperNode [2023-08-03 22:00:18,398 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 22:00:18,399 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 22:00:18,399 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 22:00:18,399 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 22:00:18,405 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:00:18" (1/1) ... [2023-08-03 22:00:18,446 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:00:18" (1/1) ... [2023-08-03 22:00:18,466 INFO L138 Inliner]: procedures = 372, calls = 46, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 166 [2023-08-03 22:00:18,466 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 22:00:18,467 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 22:00:18,467 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 22:00:18,467 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 22:00:18,474 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:00:18" (1/1) ... [2023-08-03 22:00:18,475 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:00:18" (1/1) ... [2023-08-03 22:00:18,486 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:00:18" (1/1) ... [2023-08-03 22:00:18,486 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:00:18" (1/1) ... [2023-08-03 22:00:18,492 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:00:18" (1/1) ... [2023-08-03 22:00:18,494 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:00:18" (1/1) ... [2023-08-03 22:00:18,495 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:00:18" (1/1) ... [2023-08-03 22:00:18,496 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:00:18" (1/1) ... [2023-08-03 22:00:18,499 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 22:00:18,509 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 22:00:18,509 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 22:00:18,509 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 22:00:18,510 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:00:18" (1/1) ... [2023-08-03 22:00:18,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 22:00:18,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 22:00:18,537 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 22:00:18,547 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 22:00:18,570 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2023-08-03 22:00:18,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 22:00:18,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-03 22:00:18,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 22:00:18,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 22:00:18,572 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2023-08-03 22:00:18,573 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2023-08-03 22:00:18,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 22:00:18,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 22:00:18,573 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2023-08-03 22:00:18,573 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2023-08-03 22:00:18,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 22:00:18,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 22:00:18,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 22:00:18,575 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 22:00:18,698 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 22:00:18,700 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 22:00:18,922 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 22:00:18,928 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 22:00:18,929 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-03 22:00:18,930 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 10:00:18 BoogieIcfgContainer [2023-08-03 22:00:18,930 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 22:00:18,932 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 22:00:18,932 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 22:00:18,935 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 22:00:18,935 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 10:00:17" (1/3) ... [2023-08-03 22:00:18,935 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60ac7b65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 10:00:18, skipping insertion in model container [2023-08-03 22:00:18,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:00:18" (2/3) ... [2023-08-03 22:00:18,936 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60ac7b65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 10:00:18, skipping insertion in model container [2023-08-03 22:00:18,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 10:00:18" (3/3) ... [2023-08-03 22:00:18,937 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread_reorder_2_bound2.i [2023-08-03 22:00:18,942 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 22:00:18,948 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 22:00:18,948 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 22:00:18,948 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 22:00:19,025 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-03 22:00:19,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 188 transitions, 398 flow [2023-08-03 22:00:19,156 INFO L124 PetriNetUnfolderBase]: 37/373 cut-off events. [2023-08-03 22:00:19,156 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 22:00:19,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 393 conditions, 373 events. 37/373 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1301 event pairs, 0 based on Foata normal form. 0/328 useless extension candidates. Maximal degree in co-relation 202. Up to 8 conditions per place. [2023-08-03 22:00:19,164 INFO L82 GeneralOperation]: Start removeDead. Operand has 176 places, 188 transitions, 398 flow [2023-08-03 22:00:19,168 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 176 places, 186 transitions, 388 flow [2023-08-03 22:00:19,170 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 22:00:19,182 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 176 places, 186 transitions, 388 flow [2023-08-03 22:00:19,184 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 176 places, 186 transitions, 388 flow [2023-08-03 22:00:19,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 186 transitions, 388 flow [2023-08-03 22:00:19,250 INFO L124 PetriNetUnfolderBase]: 31/345 cut-off events. [2023-08-03 22:00:19,250 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-03 22:00:19,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 361 conditions, 345 events. 31/345 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1133 event pairs, 0 based on Foata normal form. 0/302 useless extension candidates. Maximal degree in co-relation 206. Up to 8 conditions per place. [2023-08-03 22:00:19,257 INFO L119 LiptonReduction]: Number of co-enabled transitions 2446 [2023-08-03 22:00:30,637 INFO L134 LiptonReduction]: Checked pairs total: 3041 [2023-08-03 22:00:30,637 INFO L136 LiptonReduction]: Total number of compositions: 207 [2023-08-03 22:00:30,656 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 22:00:30,663 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;@68f8a7a3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 22:00:30,663 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-03 22:00:30,677 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 22:00:30,677 INFO L124 PetriNetUnfolderBase]: 0/23 cut-off events. [2023-08-03 22:00:30,677 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 22:00:30,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:00:30,678 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 22:00:30,678 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 22:00:30,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:00:30,684 INFO L85 PathProgramCache]: Analyzing trace with hash -855000428, now seen corresponding path program 1 times [2023-08-03 22:00:30,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:00:30,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980306035] [2023-08-03 22:00:30,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:00:30,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:00:30,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 22:00:30,909 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 22:00:30,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 22:00:31,006 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 22:00:31,007 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 22:00:31,008 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-03 22:00:31,010 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-03 22:00:31,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 22:00:31,010 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 22:00:31,012 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-03 22:00:31,016 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 22:00:31,016 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 22:00:31,051 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-03 22:00:31,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 210 transitions, 468 flow [2023-08-03 22:00:31,183 INFO L124 PetriNetUnfolderBase]: 149/1166 cut-off events. [2023-08-03 22:00:31,183 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-03 22:00:31,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1263 conditions, 1166 events. 149/1166 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 6340 event pairs, 2 based on Foata normal form. 0/1024 useless extension candidates. Maximal degree in co-relation 684. Up to 32 conditions per place. [2023-08-03 22:00:31,190 INFO L82 GeneralOperation]: Start removeDead. Operand has 197 places, 210 transitions, 468 flow [2023-08-03 22:00:31,194 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 197 places, 210 transitions, 468 flow [2023-08-03 22:00:31,194 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 22:00:31,194 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 197 places, 210 transitions, 468 flow [2023-08-03 22:00:31,195 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 197 places, 210 transitions, 468 flow [2023-08-03 22:00:31,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 210 transitions, 468 flow [2023-08-03 22:00:31,314 INFO L124 PetriNetUnfolderBase]: 149/1166 cut-off events. [2023-08-03 22:00:31,314 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-03 22:00:31,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1263 conditions, 1166 events. 149/1166 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 6340 event pairs, 2 based on Foata normal form. 0/1024 useless extension candidates. Maximal degree in co-relation 684. Up to 32 conditions per place. [2023-08-03 22:00:31,331 INFO L119 LiptonReduction]: Number of co-enabled transitions 6232 [2023-08-03 22:00:41,212 INFO L134 LiptonReduction]: Checked pairs total: 11651 [2023-08-03 22:00:41,212 INFO L136 LiptonReduction]: Total number of compositions: 216 [2023-08-03 22:00:41,214 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 22:00:41,215 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;@68f8a7a3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 22:00:41,215 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-03 22:00:41,221 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 22:00:41,221 INFO L124 PetriNetUnfolderBase]: 3/62 cut-off events. [2023-08-03 22:00:41,221 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-08-03 22:00:41,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:00:41,222 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 22:00:41,222 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 22:00:41,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:00:41,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1935631664, now seen corresponding path program 1 times [2023-08-03 22:00:41,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:00:41,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243612710] [2023-08-03 22:00:41,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:00:41,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:00:41,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:00:41,866 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 22:00:41,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:00:41,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243612710] [2023-08-03 22:00:41,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243612710] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 22:00:41,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586975789] [2023-08-03 22:00:41,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:00:41,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:00:41,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 22:00:41,873 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 22:00:41,907 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 22:00:41,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:00:41,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-03 22:00:41,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 22:00:42,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 22:00:42,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 22:00:42,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 22:00:42,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 22:00:42,588 INFO L322 Elim1Store]: treesize reduction 77, result has 49.7 percent of original size [2023-08-03 22:00:42,590 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 59 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 19 case distinctions, treesize of input 79 treesize of output 128 [2023-08-03 22:00:42,649 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 36 [2023-08-03 22:00:42,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 22:00:42,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 22:00:42,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 22:00:42,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 22:00:42,713 INFO L322 Elim1Store]: treesize reduction 152, result has 0.7 percent of original size [2023-08-03 22:00:42,714 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 59 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 19 case distinctions, treesize of input 79 treesize of output 1 [2023-08-03 22:00:42,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 22:00:42,784 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 13 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 41 [2023-08-03 22:00:42,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 22:00:42,993 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 13 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 41 [2023-08-03 22:00:43,079 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:00:43,079 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 22:00:45,174 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 22:00:45,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586975789] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 22:00:45,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 22:00:45,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 12 [2023-08-03 22:00:45,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678974211] [2023-08-03 22:00:45,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 22:00:45,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-03 22:00:45,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:00:45,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-03 22:00:45,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=109, Unknown=2, NotChecked=0, Total=156 [2023-08-03 22:00:47,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 22:00:48,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 22:00:51,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 22:00:53,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 22:00:55,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 22:00:55,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 426 [2023-08-03 22:00:55,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 39 transitions, 126 flow. Second operand has 13 states, 13 states have (on average 141.84615384615384) internal successors, (1844), 13 states have internal predecessors, (1844), 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 22:00:55,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:00:55,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 426 [2023-08-03 22:00:55,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:00:56,371 INFO L124 PetriNetUnfolderBase]: 4677/7429 cut-off events. [2023-08-03 22:00:56,371 INFO L125 PetriNetUnfolderBase]: For 749/749 co-relation queries the response was YES. [2023-08-03 22:00:56,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15166 conditions, 7429 events. 4677/7429 cut-off events. For 749/749 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 42817 event pairs, 2064 based on Foata normal form. 0/5635 useless extension candidates. Maximal degree in co-relation 10999. Up to 6643 conditions per place. [2023-08-03 22:00:56,398 INFO L140 encePairwiseOnDemand]: 416/426 looper letters, 28 selfloop transitions, 8 changer transitions 66/105 dead transitions. [2023-08-03 22:00:56,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 105 transitions, 484 flow [2023-08-03 22:00:56,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-03 22:00:56,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-03 22:00:56,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1643 transitions. [2023-08-03 22:00:56,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506188647033717 [2023-08-03 22:00:56,421 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1643 transitions. [2023-08-03 22:00:56,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1643 transitions. [2023-08-03 22:00:56,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:00:56,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1643 transitions. [2023-08-03 22:00:56,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 149.36363636363637) internal successors, (1643), 11 states have internal predecessors, (1643), 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 22:00:56,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 426.0) internal successors, (5112), 12 states have internal predecessors, (5112), 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 22:00:56,447 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 426.0) internal successors, (5112), 12 states have internal predecessors, (5112), 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 22:00:56,449 INFO L175 Difference]: Start difference. First operand has 40 places, 39 transitions, 126 flow. Second operand 11 states and 1643 transitions. [2023-08-03 22:00:56,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 105 transitions, 484 flow [2023-08-03 22:00:56,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 105 transitions, 468 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 22:00:56,460 INFO L231 Difference]: Finished difference. Result has 48 places, 26 transitions, 92 flow [2023-08-03 22:00:56,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=92, PETRI_PLACES=48, PETRI_TRANSITIONS=26} [2023-08-03 22:00:56,465 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 8 predicate places. [2023-08-03 22:00:56,465 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 26 transitions, 92 flow [2023-08-03 22:00:56,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 141.84615384615384) internal successors, (1844), 13 states have internal predecessors, (1844), 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 22:00:56,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:00:56,467 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2023-08-03 22:00:56,517 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-03 22:00:56,717 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 22:00:56,718 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 22:00:56,718 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:00:56,718 INFO L85 PathProgramCache]: Analyzing trace with hash 19555844, now seen corresponding path program 1 times [2023-08-03 22:00:56,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:00:56,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035862299] [2023-08-03 22:00:56,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:00:56,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:00:56,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:00:57,138 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 22:00:57,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:00:57,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035862299] [2023-08-03 22:00:57,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035862299] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 22:00:57,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916753746] [2023-08-03 22:00:57,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:00:57,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:00:57,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 22:00:57,140 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 22:00:57,145 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 22:00:57,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:00:57,247 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-03 22:00:57,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 22:00:57,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 22:00:57,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 22:00:57,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 22:00:57,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 22:00:57,714 INFO L322 Elim1Store]: treesize reduction 80, result has 47.7 percent of original size [2023-08-03 22:00:57,715 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 59 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 19 case distinctions, treesize of input 70 treesize of output 116 [2023-08-03 22:00:57,758 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 36 [2023-08-03 22:00:57,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 22:00:57,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 22:00:57,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 22:00:57,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 22:00:57,893 INFO L322 Elim1Store]: treesize reduction 80, result has 47.7 percent of original size [2023-08-03 22:00:57,894 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 59 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 19 case distinctions, treesize of input 70 treesize of output 116 [2023-08-03 22:00:58,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 22:00:58,097 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 13 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 41 [2023-08-03 22:00:58,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 22:00:58,313 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 13 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 41 [2023-08-03 22:00:58,402 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 22:00:58,403 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 22:00:58,434 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_205 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#checkPool~0#1.base| v_ArrVal_205) |c_~#iCheck~0.base|) |c_~#iCheck~0.offset|) (+ 2 |c_ULTIMATE.start_main_~i~0#1|))) is different from false [2023-08-03 22:00:58,469 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_205 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#checkPool~0#1.base| v_ArrVal_205) |c_~#iCheck~0.base|) |c_~#iCheck~0.offset|) 3)) is different from false [2023-08-03 22:00:58,470 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-08-03 22:00:58,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916753746] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 22:00:58,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 22:00:58,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 15 [2023-08-03 22:00:58,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588784080] [2023-08-03 22:00:58,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 22:00:58,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-03 22:00:58,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:00:58,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-03 22:00:58,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=135, Unknown=2, NotChecked=50, Total=240 [2023-08-03 22:00:58,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 426 [2023-08-03 22:00:58,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 26 transitions, 92 flow. Second operand has 16 states, 16 states have (on average 140.6875) internal successors, (2251), 16 states have internal predecessors, (2251), 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 22:00:58,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:00:58,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 426 [2023-08-03 22:00:58,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:00:59,050 INFO L124 PetriNetUnfolderBase]: 984/1590 cut-off events. [2023-08-03 22:00:59,050 INFO L125 PetriNetUnfolderBase]: For 211/211 co-relation queries the response was YES. [2023-08-03 22:00:59,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3517 conditions, 1590 events. 984/1590 cut-off events. For 211/211 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7196 event pairs, 962 based on Foata normal form. 9/1332 useless extension candidates. Maximal degree in co-relation 959. Up to 1447 conditions per place. [2023-08-03 22:00:59,058 INFO L140 encePairwiseOnDemand]: 422/426 looper letters, 20 selfloop transitions, 2 changer transitions 17/42 dead transitions. [2023-08-03 22:00:59,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 42 transitions, 214 flow [2023-08-03 22:00:59,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 22:00:59,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 22:00:59,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 732 transitions. [2023-08-03 22:00:59,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3436619718309859 [2023-08-03 22:00:59,061 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 732 transitions. [2023-08-03 22:00:59,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 732 transitions. [2023-08-03 22:00:59,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:00:59,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 732 transitions. [2023-08-03 22:00:59,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 146.4) internal successors, (732), 5 states have internal predecessors, (732), 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 22:00:59,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 426.0) internal successors, (2556), 6 states have internal predecessors, (2556), 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 22:00:59,067 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 426.0) internal successors, (2556), 6 states have internal predecessors, (2556), 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 22:00:59,067 INFO L175 Difference]: Start difference. First operand has 48 places, 26 transitions, 92 flow. Second operand 5 states and 732 transitions. [2023-08-03 22:00:59,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 42 transitions, 214 flow [2023-08-03 22:00:59,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 42 transitions, 212 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-03 22:00:59,071 INFO L231 Difference]: Finished difference. Result has 41 places, 25 transitions, 100 flow [2023-08-03 22:00:59,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=100, PETRI_PLACES=41, PETRI_TRANSITIONS=25} [2023-08-03 22:00:59,072 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2023-08-03 22:00:59,072 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 25 transitions, 100 flow [2023-08-03 22:00:59,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 140.6875) internal successors, (2251), 16 states have internal predecessors, (2251), 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 22:00:59,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:00:59,074 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:00:59,087 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 22:00:59,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-03 22:00:59,288 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 22:00:59,288 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:00:59,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1115208732, now seen corresponding path program 1 times [2023-08-03 22:00:59,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:00:59,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136766457] [2023-08-03 22:00:59,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:00:59,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:00:59,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:00:59,737 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:00:59,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:00:59,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136766457] [2023-08-03 22:00:59,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136766457] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 22:00:59,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727064909] [2023-08-03 22:00:59,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:00:59,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:00:59,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 22:00:59,740 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 22:00:59,774 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 22:00:59,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:00:59,868 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-03 22:00:59,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 22:01:00,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 22:01:00,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 22:01:00,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 22:01:00,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 22:01:00,304 INFO L322 Elim1Store]: treesize reduction 80, result has 47.7 percent of original size [2023-08-03 22:01:00,305 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 59 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 19 case distinctions, treesize of input 70 treesize of output 116 [2023-08-03 22:01:00,383 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 36 [2023-08-03 22:01:00,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 22:01:00,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 22:01:00,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 22:01:00,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 22:01:00,502 INFO L322 Elim1Store]: treesize reduction 80, result has 47.7 percent of original size [2023-08-03 22:01:00,503 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 59 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 19 case distinctions, treesize of input 70 treesize of output 116 [2023-08-03 22:01:00,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 22:01:00,741 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 14 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 41 [2023-08-03 22:01:01,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 22:01:01,001 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 13 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 41 [2023-08-03 22:01:01,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 22:01:01,205 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 13 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 41 [2023-08-03 22:01:01,293 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:01:01,294 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 22:01:03,381 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_305 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#checkPool~0#1.base| v_ArrVal_305) |c_~#iCheck~0.base|) |c_~#iCheck~0.offset|) (+ 3 |c_ULTIMATE.start_main_~i~0#1|))) is different from false [2023-08-03 22:01:03,394 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_305 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#checkPool~0#1.base| v_ArrVal_305) |c_~#iCheck~0.base|) |c_~#iCheck~0.offset|) 3)) is different from false [2023-08-03 22:01:03,427 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2023-08-03 22:01:03,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727064909] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 22:01:03,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 22:01:03,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 18 [2023-08-03 22:01:03,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517762670] [2023-08-03 22:01:03,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 22:01:03,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-03 22:01:03,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:01:03,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-03 22:01:03,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=8, NotChecked=62, Total=342 [2023-08-03 22:01:03,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 426 [2023-08-03 22:01:03,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 25 transitions, 100 flow. Second operand has 19 states, 19 states have (on average 138.89473684210526) internal successors, (2639), 19 states have internal predecessors, (2639), 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 22:01:03,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:01:03,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 426 [2023-08-03 22:01:03,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:01:04,235 INFO L124 PetriNetUnfolderBase]: 692/1121 cut-off events. [2023-08-03 22:01:04,235 INFO L125 PetriNetUnfolderBase]: For 689/689 co-relation queries the response was YES. [2023-08-03 22:01:04,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2757 conditions, 1121 events. 692/1121 cut-off events. For 689/689 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4763 event pairs, 130 based on Foata normal form. 108/1049 useless extension candidates. Maximal degree in co-relation 2737. Up to 535 conditions per place. [2023-08-03 22:01:04,238 INFO L140 encePairwiseOnDemand]: 421/426 looper letters, 0 selfloop transitions, 0 changer transitions 39/39 dead transitions. [2023-08-03 22:01:04,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 39 transitions, 204 flow [2023-08-03 22:01:04,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 22:01:04,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 22:01:04,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 723 transitions. [2023-08-03 22:01:04,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33943661971830985 [2023-08-03 22:01:04,241 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 723 transitions. [2023-08-03 22:01:04,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 723 transitions. [2023-08-03 22:01:04,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:01:04,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 723 transitions. [2023-08-03 22:01:04,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 144.6) internal successors, (723), 5 states have internal predecessors, (723), 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 22:01:04,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 426.0) internal successors, (2556), 6 states have internal predecessors, (2556), 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 22:01:04,247 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 426.0) internal successors, (2556), 6 states have internal predecessors, (2556), 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 22:01:04,248 INFO L175 Difference]: Start difference. First operand has 41 places, 25 transitions, 100 flow. Second operand 5 states and 723 transitions. [2023-08-03 22:01:04,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 39 transitions, 204 flow [2023-08-03 22:01:04,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 39 transitions, 189 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-03 22:01:04,251 INFO L231 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2023-08-03 22:01:04,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2023-08-03 22:01:04,253 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -3 predicate places. [2023-08-03 22:01:04,253 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2023-08-03 22:01:04,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 138.89473684210526) internal successors, (2639), 19 states have internal predecessors, (2639), 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 22:01:04,254 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-03 22:01:04,255 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-03 22:01:04,260 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 22:01:04,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:01:04,461 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-03 22:01:04,461 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE,SAFE (1/2) [2023-08-03 22:01:04,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 210 transitions, 468 flow [2023-08-03 22:01:04,542 INFO L124 PetriNetUnfolderBase]: 149/1166 cut-off events. [2023-08-03 22:01:04,542 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-03 22:01:04,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1263 conditions, 1166 events. 149/1166 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 6340 event pairs, 2 based on Foata normal form. 0/1024 useless extension candidates. Maximal degree in co-relation 684. Up to 32 conditions per place. [2023-08-03 22:01:04,547 INFO L82 GeneralOperation]: Start removeDead. Operand has 197 places, 210 transitions, 468 flow [2023-08-03 22:01:04,551 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 196 places, 209 transitions, 462 flow [2023-08-03 22:01:04,551 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 22:01:04,552 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 196 places, 209 transitions, 462 flow [2023-08-03 22:01:04,552 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 196 places, 209 transitions, 462 flow [2023-08-03 22:01:04,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 196 places, 209 transitions, 462 flow [2023-08-03 22:01:04,626 INFO L124 PetriNetUnfolderBase]: 149/1165 cut-off events. [2023-08-03 22:01:04,626 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2023-08-03 22:01:04,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1260 conditions, 1165 events. 149/1165 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 6314 event pairs, 2 based on Foata normal form. 0/1023 useless extension candidates. Maximal degree in co-relation 684. Up to 32 conditions per place. [2023-08-03 22:01:04,646 INFO L119 LiptonReduction]: Number of co-enabled transitions 6212 [2023-08-03 22:01:16,609 INFO L134 LiptonReduction]: Checked pairs total: 11513 [2023-08-03 22:01:16,609 INFO L136 LiptonReduction]: Total number of compositions: 216 [2023-08-03 22:01:16,613 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 22:01:16,613 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;@68f8a7a3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 22:01:16,613 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 22:01:16,615 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 22:01:16,616 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-08-03 22:01:16,616 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 22:01:16,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:01:16,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 22:01:16,616 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 22:01:16,616 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:01:16,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1296481294, now seen corresponding path program 1 times [2023-08-03 22:01:16,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:01:16,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852728865] [2023-08-03 22:01:16,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:01:16,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:01:16,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:01:16,667 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 22:01:16,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:01:16,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852728865] [2023-08-03 22:01:16,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852728865] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:01:16,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:01:16,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 22:01:16,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194346030] [2023-08-03 22:01:16,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:01:16,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 22:01:16,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:01:16,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 22:01:16,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 22:01:16,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 426 [2023-08-03 22:01:16,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 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 22:01:16,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:01:16,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 426 [2023-08-03 22:01:16,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:01:17,172 INFO L124 PetriNetUnfolderBase]: 4447/6837 cut-off events. [2023-08-03 22:01:17,172 INFO L125 PetriNetUnfolderBase]: For 1289/1289 co-relation queries the response was YES. [2023-08-03 22:01:17,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14158 conditions, 6837 events. 4447/6837 cut-off events. For 1289/1289 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 37017 event pairs, 1433 based on Foata normal form. 0/5175 useless extension candidates. Maximal degree in co-relation 10038. Up to 6226 conditions per place. [2023-08-03 22:01:17,204 INFO L140 encePairwiseOnDemand]: 421/426 looper letters, 53 selfloop transitions, 3 changer transitions 0/61 dead transitions. [2023-08-03 22:01:17,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 61 transitions, 303 flow [2023-08-03 22:01:17,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 22:01:17,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 22:01:17,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 592 transitions. [2023-08-03 22:01:17,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46322378716744916 [2023-08-03 22:01:17,206 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 592 transitions. [2023-08-03 22:01:17,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 592 transitions. [2023-08-03 22:01:17,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:01:17,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 592 transitions. [2023-08-03 22:01:17,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.33333333333334) internal successors, (592), 3 states have internal predecessors, (592), 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 22:01:17,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 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 22:01:17,210 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 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 22:01:17,210 INFO L175 Difference]: Start difference. First operand has 39 places, 38 transitions, 120 flow. Second operand 3 states and 592 transitions. [2023-08-03 22:01:17,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 61 transitions, 303 flow [2023-08-03 22:01:17,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 61 transitions, 299 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 22:01:17,222 INFO L231 Difference]: Finished difference. Result has 41 places, 40 transitions, 138 flow [2023-08-03 22:01:17,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=41, PETRI_TRANSITIONS=40} [2023-08-03 22:01:17,225 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2023-08-03 22:01:17,225 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 40 transitions, 138 flow [2023-08-03 22:01:17,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 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 22:01:17,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:01:17,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:01:17,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-03 22:01:17,225 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 22:01:17,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:01:17,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1556416735, now seen corresponding path program 1 times [2023-08-03 22:01:17,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:01:17,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747151011] [2023-08-03 22:01:17,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:01:17,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:01:17,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 22:01:17,252 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 22:01:17,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 22:01:17,283 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 22:01:17,283 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 22:01:17,284 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-03 22:01:17,284 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 22:01:17,284 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-03 22:01:17,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 22:01:17,284 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 22:01:17,285 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was UNSAFE,UNKNOWN,UNKNOWN (2/2) [2023-08-03 22:01:17,287 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 22:01:17,287 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 22:01:17,339 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 10:01:17 BasicIcfg [2023-08-03 22:01:17,340 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 22:01:17,340 INFO L158 Benchmark]: Toolchain (without parser) took 59735.52ms. Allocated memory was 503.3MB in the beginning and 606.1MB in the end (delta: 102.8MB). Free memory was 458.4MB in the beginning and 458.6MB in the end (delta: -241.6kB). Peak memory consumption was 104.2MB. Max. memory is 16.0GB. [2023-08-03 22:01:17,340 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 373.3MB. Free memory was 326.3MB in the beginning and 326.1MB in the end (delta: 174.8kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 22:01:17,340 INFO L158 Benchmark]: CACSL2BoogieTranslator took 793.01ms. Allocated memory is still 503.3MB. Free memory was 458.0MB in the beginning and 417.9MB in the end (delta: 40.1MB). Peak memory consumption was 39.8MB. Max. memory is 16.0GB. [2023-08-03 22:01:17,341 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.27ms. Allocated memory is still 503.3MB. Free memory was 417.9MB in the beginning and 469.0MB in the end (delta: -51.1MB). Peak memory consumption was 8.1MB. Max. memory is 16.0GB. [2023-08-03 22:01:17,341 INFO L158 Benchmark]: Boogie Preprocessor took 32.28ms. Allocated memory is still 503.3MB. Free memory was 469.0MB in the beginning and 467.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 22:01:17,341 INFO L158 Benchmark]: RCFGBuilder took 421.56ms. Allocated memory is still 503.3MB. Free memory was 467.8MB in the beginning and 448.0MB in the end (delta: 19.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-03 22:01:17,343 INFO L158 Benchmark]: TraceAbstraction took 58407.53ms. Allocated memory was 503.3MB in the beginning and 606.1MB in the end (delta: 102.8MB). Free memory was 447.2MB in the beginning and 458.6MB in the end (delta: -11.4MB). Peak memory consumption was 92.0MB. Max. memory is 16.0GB. [2023-08-03 22:01:17,345 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 373.3MB. Free memory was 326.3MB in the beginning and 326.1MB in the end (delta: 174.8kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 793.01ms. Allocated memory is still 503.3MB. Free memory was 458.0MB in the beginning and 417.9MB in the end (delta: 40.1MB). Peak memory consumption was 39.8MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 67.27ms. Allocated memory is still 503.3MB. Free memory was 417.9MB in the beginning and 469.0MB in the end (delta: -51.1MB). Peak memory consumption was 8.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 32.28ms. Allocated memory is still 503.3MB. Free memory was 469.0MB in the beginning and 467.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 421.56ms. Allocated memory is still 503.3MB. Free memory was 467.8MB in the beginning and 448.0MB in the end (delta: 19.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 58407.53ms. Allocated memory was 503.3MB in the beginning and 606.1MB in the end (delta: 102.8MB). Free memory was 447.2MB in the beginning and 458.6MB in the end (delta: -11.4MB). Peak memory consumption was 92.0MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 133]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [133] - GenericResultAtLocation [Line: 510]: Unsoundness Warning unspecified type, defaulting to int C: short [510] - GenericResultAtLocation [Line: 510]: Unsoundness Warning unspecified type, defaulting to int C: short [510] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11.5s, 176 PlacesBefore, 26 PlacesAfterwards, 186 TransitionsBefore, 23 TransitionsAfterwards, 2446 CoEnabledTransitionPairs, 9 FixpointIterations, 72 TrivialSequentialCompositions, 88 ConcurrentSequentialCompositions, 10 TrivialYvCompositions, 24 ConcurrentYvCompositions, 13 ChoiceCompositions, 207 TotalNumberOfCompositions, 3041 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2308, independent: 2270, independent conditional: 0, independent unconditional: 2270, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1367, independent: 1357, independent conditional: 0, independent unconditional: 1357, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2308, independent: 913, independent conditional: 0, independent unconditional: 913, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 1367, unknown conditional: 0, unknown unconditional: 1367] , Statistics on independence cache: Total cache size (in pairs): 25, Positive cache size: 23, Positive conditional cache size: 0, Positive unconditional cache size: 23, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.0s, 197 PlacesBefore, 40 PlacesAfterwards, 210 TransitionsBefore, 39 TransitionsAfterwards, 6232 CoEnabledTransitionPairs, 8 FixpointIterations, 70 TrivialSequentialCompositions, 92 ConcurrentSequentialCompositions, 12 TrivialYvCompositions, 28 ConcurrentYvCompositions, 14 ChoiceCompositions, 216 TotalNumberOfCompositions, 11651 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8884, independent: 8794, independent conditional: 0, independent unconditional: 8794, dependent: 90, dependent conditional: 0, dependent unconditional: 90, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3764, independent: 3741, independent conditional: 0, independent unconditional: 3741, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 8884, independent: 5053, independent conditional: 0, independent unconditional: 5053, dependent: 67, dependent conditional: 0, dependent unconditional: 67, unknown: 3764, unknown conditional: 0, unknown unconditional: 3764] , Statistics on independence cache: Total cache size (in pairs): 141, Positive cache size: 134, Positive conditional cache size: 0, Positive unconditional cache size: 134, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12.1s, 196 PlacesBefore, 39 PlacesAfterwards, 209 TransitionsBefore, 38 TransitionsAfterwards, 6212 CoEnabledTransitionPairs, 8 FixpointIterations, 71 TrivialSequentialCompositions, 90 ConcurrentSequentialCompositions, 11 TrivialYvCompositions, 30 ConcurrentYvCompositions, 14 ChoiceCompositions, 216 TotalNumberOfCompositions, 11513 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8716, independent: 8626, independent conditional: 0, independent unconditional: 8626, dependent: 90, dependent conditional: 0, dependent unconditional: 90, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3701, independent: 3682, independent conditional: 0, independent unconditional: 3682, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 8716, independent: 4944, independent conditional: 0, independent unconditional: 4944, dependent: 71, dependent conditional: 0, dependent unconditional: 71, unknown: 3701, unknown conditional: 0, unknown unconditional: 3701] , Statistics on independence cache: Total cache size (in pairs): 128, Positive cache size: 121, Positive conditional cache size: 0, Positive unconditional cache size: 121, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 1295]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of sscanf at line 1251. Possible FailurePath: [L1236] 0 static int iSet = 2; [L1237] 0 static int iCheck = 2; [L1238] 0 static int a = 0; [L1239] 0 static int b = 0; [L1245] 0 int i, err; [L1246] COND TRUE 0 argc != 1 [L1247] COND FALSE 0 !(argc != 3) [L1251] 0 argv[1] [L1252] 0 argv[2] [L1255] EXPR 0 \read(iSet) [L1255] 0 iSet > 2 || iCheck > 2 [L1255] EXPR 0 \read(iCheck) [L1255] 0 iSet > 2 || iCheck > 2 [L1255] COND FALSE 0 !(iSet > 2 || iCheck > 2) [L1258] EXPR 0 \read(iSet) [L1258] 0 pthread_t setPool[iSet]; [L1259] EXPR 0 \read(iCheck) [L1259] 0 pthread_t checkPool[iCheck]; [L1260] 0 i = 0 VAL [\old(argc)=3, \read(iCheck)=2, \read(iSet)=1, a=0, argc=3, argv={58:59}, argv={58:59}, b=0, checkPool={11:0}, i=0, iCheck={10:0}, iSet={9:0}, setPool={13:0}] [L1260] EXPR 0 \read(iSet) [L1260] COND TRUE 0 i < iSet [L1261] EXPR, FCALL, FORK 0 pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0)) VAL [\old(argc)=3, \read(iCheck)=2, \read(iSet)=1, a=0, argc=3, argv={58:59}, argv={58:59}, b=0, checkPool={11:0}, i=0, iCheck={10:0}, iSet={9:0}, param={0:0}, pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0))=14, setPool={13:0}] [L1261] EXPR 0 err = pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0)) VAL [\old(argc)=3, \read(iCheck)=2, \read(iSet)=1, a=0, argc=3, argv={58:59}, argv={58:59}, b=0, checkPool={11:0}, err=0, i=0, iCheck={10:0}, iSet={9:0}, param={0:0}, pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0))=0, pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0))=14, setPool={13:0}] [L1261] COND FALSE 0 !(0 != (err = pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0)))) [L1260] 0 i++ VAL [\old(argc)=3, \read(iCheck)=2, \read(iSet)=1, a=0, argc=3, argv={58:59}, argv={58:59}, b=0, checkPool={11:0}, err=0, fprintf(stderr, "Error [%d] found creating set thread.\n", err)=50, i=1, iCheck={10:0}, iSet={9:0}, param={0:0}, setPool={13:0}] [L1260] EXPR 0 \read(iSet) [L1260] COND FALSE 0 !(i < iSet) [L1266] 0 i = 0 VAL [\old(argc)=3, \read(iCheck)=2, \read(iSet)=1, a=0, argc=3, argv={58:59}, argv={58:59}, b=0, checkPool={11:0}, err=0, fprintf(stderr, "Error [%d] found creating set thread.\n", err)=50, i=0, iCheck={10:0}, iSet={9:0}, param={0:0}, setPool={13:0}] [L1266] EXPR 0 \read(iCheck) [L1266] COND TRUE 0 i < iCheck [L1267-L1268] FCALL, FORK 0 pthread_create(&checkPool[i], ((void *)0), &checkThread, ((void *)0)) VAL [\old(argc)=3, \read(iCheck)=2, \read(iSet)=1, a=0, argc=3, argv={58:59}, argv={58:59}, b=0, checkPool={11:0}, err=0, fprintf(stderr, "Error [%d] found creating set thread.\n", err)=50, i=0, iCheck={10:0}, iSet={9:0}, param={0:0}, param={0:0}, pthread_create(&checkPool[i], ((void *)0), &checkThread, ((void *)0))=15, setPool={13:0}] [L1288] 1 a = 1 VAL [a=1, b=0, iCheck={10:0}, iSet={9:0}, param={0:0}, param={0:0}, param={0:0}] [L1293] COND TRUE 2 ! ((a == 0 && b == 0) || (a == 1 && b == -1)) [L1295] 2 reach_error() VAL [a=1, b=0, iCheck={10:0}, iSet={9:0}, param={0:0}, param={0:0}, param={0:0}, param={0:0}] - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 5 procedures, 189 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 12.0s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 11.6s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred 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, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 2 thread instances CFG has 7 procedures, 206 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: 33.4s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 12.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 10.2s, HoareTripleCheckerStatistics: 27 mSolverCounterUnknown, 434 SdHoareTripleChecker+Valid, 10.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 390 mSDsluCounter, 28 SdHoareTripleChecker+Invalid, 10.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 204 IncrementalHoareTripleChecker+Unchecked, 24 mSDsCounter, 86 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1003 IncrementalHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 86 mSolverCounterUnsat, 4 mSDtfsCounter, 1003 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 109 GetRequests, 52 SyntacticMatches, 6 SemanticMatches, 51 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 5.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=126occurred in iteration=0, InterpolantAutomatonStates: 21, 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, 0.2s SatisfiabilityAnalysisTime, 9.3s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 108 ConstructedInterpolants, 21 QuantifiedInterpolants, 2945 SizeOfPredicates, 89 NumberOfNonLiveVariables, 379 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 9 InterpolantComputations, 0 PerfectInterpolantSequences, 24/75 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 206 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: 12.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 12.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 43 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 80 IncrementalHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 12 mSDtfsCounter, 80 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=138occurred in iteration=1, InterpolantAutomatonStates: 3, 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, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 28 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-08-03 22:01:17,386 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...