./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0bf2f5f336333cdf96c271b32cdeb9b70ee932e1c07acf27a63b4425ec902f3e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 14:24:18,121 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 14:24:18,182 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-12-02 14:24:18,186 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 14:24:18,187 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 14:24:18,207 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 14:24:18,208 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 14:24:18,208 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 14:24:18,209 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 14:24:18,209 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 14:24:18,210 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 14:24:18,210 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 14:24:18,211 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 14:24:18,211 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 14:24:18,212 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 14:24:18,212 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 14:24:18,213 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 14:24:18,213 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 14:24:18,214 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 14:24:18,214 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 14:24:18,215 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 14:24:18,215 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 14:24:18,216 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 14:24:18,216 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 14:24:18,217 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 14:24:18,217 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 14:24:18,218 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 14:24:18,218 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 14:24:18,218 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 14:24:18,219 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 14:24:18,219 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 14:24:18,219 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 14:24:18,220 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 14:24:18,220 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 14:24:18,220 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 14:24:18,220 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 14:24:18,220 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 14:24:18,221 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 14:24:18,221 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 14:24:18,221 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:24:18,221 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 14:24:18,222 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 14:24:18,222 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 14:24:18,222 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 14:24:18,222 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 14:24:18,222 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 14:24:18,223 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 14:24:18,223 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 14:24:18,223 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 14:24:18,223 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0bf2f5f336333cdf96c271b32cdeb9b70ee932e1c07acf27a63b4425ec902f3e [2023-12-02 14:24:18,416 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 14:24:18,435 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 14:24:18,438 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 14:24:18,439 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 14:24:18,439 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 14:24:18,440 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i [2023-12-02 14:24:21,159 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 14:24:21,453 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 14:24:21,454 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i [2023-12-02 14:24:21,474 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/data/29d214924/077f3b484b2a4f3f8f4e1f11ef064a3e/FLAG68eb3c6c5 [2023-12-02 14:24:21,486 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/data/29d214924/077f3b484b2a4f3f8f4e1f11ef064a3e [2023-12-02 14:24:21,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 14:24:21,490 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 14:24:21,491 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 14:24:21,491 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 14:24:21,495 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 14:24:21,496 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:24:21" (1/1) ... [2023-12-02 14:24:21,497 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51426dae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:24:21, skipping insertion in model container [2023-12-02 14:24:21,497 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:24:21" (1/1) ... [2023-12-02 14:24:21,577 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 14:24:22,211 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:24:22,223 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 14:24:22,296 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:24:22,397 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:24:22,398 WARN L675 CHandler]: The function sleep is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:24:22,398 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:24:22,398 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:24:22,406 INFO L206 MainTranslator]: Completed translation [2023-12-02 14:24:22,406 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:24:22 WrapperNode [2023-12-02 14:24:22,406 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 14:24:22,407 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 14:24:22,407 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 14:24:22,407 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 14:24:22,412 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:24:22" (1/1) ... [2023-12-02 14:24:22,442 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:24:22" (1/1) ... [2023-12-02 14:24:22,471 INFO L138 Inliner]: procedures = 525, calls = 71, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 139 [2023-12-02 14:24:22,471 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 14:24:22,472 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 14:24:22,472 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 14:24:22,472 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 14:24:22,481 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:24:22" (1/1) ... [2023-12-02 14:24:22,482 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:24:22" (1/1) ... [2023-12-02 14:24:22,487 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:24:22" (1/1) ... [2023-12-02 14:24:22,488 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:24:22" (1/1) ... [2023-12-02 14:24:22,501 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:24:22" (1/1) ... [2023-12-02 14:24:22,506 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:24:22" (1/1) ... [2023-12-02 14:24:22,512 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:24:22" (1/1) ... [2023-12-02 14:24:22,515 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:24:22" (1/1) ... [2023-12-02 14:24:22,522 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 14:24:22,523 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 14:24:22,523 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 14:24:22,523 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 14:24:22,524 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:24:22" (1/1) ... [2023-12-02 14:24:22,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:24:22,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:24:22,567 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 14:24:22,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 14:24:22,606 INFO L130 BoogieDeclarations]: Found specification of procedure counter_thread [2023-12-02 14:24:22,606 INFO L138 BoogieDeclarations]: Found implementation of procedure counter_thread [2023-12-02 14:24:22,606 INFO L130 BoogieDeclarations]: Found specification of procedure sleep [2023-12-02 14:24:22,607 INFO L130 BoogieDeclarations]: Found specification of procedure monitor_thread [2023-12-02 14:24:22,607 INFO L138 BoogieDeclarations]: Found implementation of procedure monitor_thread [2023-12-02 14:24:22,607 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-12-02 14:24:22,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 14:24:22,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 14:24:22,607 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-12-02 14:24:22,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 14:24:22,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 14:24:22,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 14:24:22,608 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2023-12-02 14:24:22,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 14:24:22,608 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2023-12-02 14:24:22,608 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-12-02 14:24:22,608 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-12-02 14:24:22,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 14:24:22,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 14:24:22,610 WARN L213 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-02 14:24:22,871 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 14:24:22,873 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 14:24:23,154 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 14:24:23,347 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 14:24:23,347 INFO L309 CfgBuilder]: Removed 19 assume(true) statements. [2023-12-02 14:24:23,348 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:24:23 BoogieIcfgContainer [2023-12-02 14:24:23,348 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 14:24:23,351 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 14:24:23,351 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 14:24:23,354 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 14:24:23,354 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:24:21" (1/3) ... [2023-12-02 14:24:23,355 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d183175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:24:23, skipping insertion in model container [2023-12-02 14:24:23,355 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:24:22" (2/3) ... [2023-12-02 14:24:23,355 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d183175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:24:23, skipping insertion in model container [2023-12-02 14:24:23,355 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:24:23" (3/3) ... [2023-12-02 14:24:23,356 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_36-trylock_nr.i [2023-12-02 14:24:23,365 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-12-02 14:24:23,375 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 14:24:23,375 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-12-02 14:24:23,376 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-02 14:24:23,433 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-12-02 14:24:23,462 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 89 places, 113 transitions, 240 flow [2023-12-02 14:24:23,674 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 4177 states, 4151 states have (on average 3.896892315104794) internal successors, (16176), 4176 states have internal predecessors, (16176), 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) [2023-12-02 14:24:23,693 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 14:24:23,700 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@91dfb26, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 14:24:23,700 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-12-02 14:24:23,719 INFO L276 IsEmpty]: Start isEmpty. Operand has 4177 states, 4151 states have (on average 3.896892315104794) internal successors, (16176), 4176 states have internal predecessors, (16176), 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) [2023-12-02 14:24:23,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 14:24:23,725 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:24:23,725 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 14:24:23,726 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-12-02 14:24:23,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:24:23,731 INFO L85 PathProgramCache]: Analyzing trace with hash 640708, now seen corresponding path program 1 times [2023-12-02 14:24:23,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:24:23,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101126878] [2023-12-02 14:24:23,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:24:23,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:24:23,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:24:24,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:24:24,110 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:24:24,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101126878] [2023-12-02 14:24:24,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101126878] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:24:24,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:24:24,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 14:24:24,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696267601] [2023-12-02 14:24:24,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:24:24,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:24:24,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:24:24,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:24:24,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:24:24,161 INFO L87 Difference]: Start difference. First operand has 4177 states, 4151 states have (on average 3.896892315104794) internal successors, (16176), 4176 states have internal predecessors, (16176), 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) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2023-12-02 14:24:24,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:24:24,307 INFO L93 Difference]: Finished difference Result 2971 states and 8373 transitions. [2023-12-02 14:24:24,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:24:24,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) Word has length 3 [2023-12-02 14:24:24,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:24:24,354 INFO L225 Difference]: With dead ends: 2971 [2023-12-02 14:24:24,355 INFO L226 Difference]: Without dead ends: 2897 [2023-12-02 14:24:24,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:24:24,360 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 67 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:24:24,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 32 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:24:24,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2897 states. [2023-12-02 14:24:24,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2897 to 2897. [2023-12-02 14:24:24,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2897 states, 2808 states have (on average 2.912037037037037) internal successors, (8177), 2896 states have internal predecessors, (8177), 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) [2023-12-02 14:24:24,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2897 states to 2897 states and 8177 transitions. [2023-12-02 14:24:24,551 INFO L78 Accepts]: Start accepts. Automaton has 2897 states and 8177 transitions. Word has length 3 [2023-12-02 14:24:24,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:24:24,551 INFO L495 AbstractCegarLoop]: Abstraction has 2897 states and 8177 transitions. [2023-12-02 14:24:24,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2023-12-02 14:24:24,552 INFO L276 IsEmpty]: Start isEmpty. Operand 2897 states and 8177 transitions. [2023-12-02 14:24:24,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-02 14:24:24,552 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:24:24,552 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-02 14:24:24,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 14:24:24,553 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-12-02 14:24:24,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:24:24,554 INFO L85 PathProgramCache]: Analyzing trace with hash 19862619, now seen corresponding path program 1 times [2023-12-02 14:24:24,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:24:24,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575014642] [2023-12-02 14:24:24,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:24:24,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:24:24,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:24:24,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:24:24,632 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:24:24,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575014642] [2023-12-02 14:24:24,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575014642] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:24:24,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:24:24,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 14:24:24,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103150136] [2023-12-02 14:24:24,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:24:24,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:24:24,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:24:24,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:24:24,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:24:24,636 INFO L87 Difference]: Start difference. First operand 2897 states and 8177 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-12-02 14:24:24,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:24:24,746 INFO L93 Difference]: Finished difference Result 2896 states and 8176 transitions. [2023-12-02 14:24:24,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:24:24,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) Word has length 4 [2023-12-02 14:24:24,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:24:24,770 INFO L225 Difference]: With dead ends: 2896 [2023-12-02 14:24:24,771 INFO L226 Difference]: Without dead ends: 2896 [2023-12-02 14:24:24,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:24:24,773 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 65 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:24:24,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 33 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:24:24,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2896 states. [2023-12-02 14:24:24,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2896 to 2896. [2023-12-02 14:24:24,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2896 states, 2808 states have (on average 2.9116809116809117) internal successors, (8176), 2895 states have internal predecessors, (8176), 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) [2023-12-02 14:24:24,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2896 states to 2896 states and 8176 transitions. [2023-12-02 14:24:24,891 INFO L78 Accepts]: Start accepts. Automaton has 2896 states and 8176 transitions. Word has length 4 [2023-12-02 14:24:24,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:24:24,891 INFO L495 AbstractCegarLoop]: Abstraction has 2896 states and 8176 transitions. [2023-12-02 14:24:24,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-12-02 14:24:24,892 INFO L276 IsEmpty]: Start isEmpty. Operand 2896 states and 8176 transitions. [2023-12-02 14:24:24,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-02 14:24:24,894 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:24:24,894 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:24:24,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 14:24:24,894 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting counter_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-12-02 14:24:24,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:24:24,895 INFO L85 PathProgramCache]: Analyzing trace with hash 524957378, now seen corresponding path program 1 times [2023-12-02 14:24:24,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:24:24,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791772449] [2023-12-02 14:24:24,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:24:24,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:24:24,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:24:25,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:24:25,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:24:25,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791772449] [2023-12-02 14:24:25,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791772449] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:24:25,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:24:25,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 14:24:25,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902857523] [2023-12-02 14:24:25,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:24:25,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:24:25,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:24:25,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:24:25,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:24:25,087 INFO L87 Difference]: Start difference. First operand 2896 states and 8176 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-12-02 14:24:25,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:24:25,326 INFO L93 Difference]: Finished difference Result 4757 states and 13454 transitions. [2023-12-02 14:24:25,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:24:25,326 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) Word has length 14 [2023-12-02 14:24:25,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:24:25,366 INFO L225 Difference]: With dead ends: 4757 [2023-12-02 14:24:25,366 INFO L226 Difference]: Without dead ends: 4757 [2023-12-02 14:24:25,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:24:25,368 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 79 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 14:24:25,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 102 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 14:24:25,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4757 states. [2023-12-02 14:24:25,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4757 to 4707. [2023-12-02 14:24:25,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4707 states, 4619 states have (on average 2.901493829833297) internal successors, (13402), 4706 states have internal predecessors, (13402), 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) [2023-12-02 14:24:25,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4707 states to 4707 states and 13402 transitions. [2023-12-02 14:24:25,544 INFO L78 Accepts]: Start accepts. Automaton has 4707 states and 13402 transitions. Word has length 14 [2023-12-02 14:24:25,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:24:25,544 INFO L495 AbstractCegarLoop]: Abstraction has 4707 states and 13402 transitions. [2023-12-02 14:24:25,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-12-02 14:24:25,545 INFO L276 IsEmpty]: Start isEmpty. Operand 4707 states and 13402 transitions. [2023-12-02 14:24:25,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 14:24:25,548 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:24:25,548 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:24:25,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 14:24:25,549 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting counter_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-12-02 14:24:25,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:24:25,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1972891077, now seen corresponding path program 1 times [2023-12-02 14:24:25,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:24:25,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399367632] [2023-12-02 14:24:25,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:24:25,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:24:25,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:24:25,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:24:25,692 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:24:25,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399367632] [2023-12-02 14:24:25,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399367632] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:24:25,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:24:25,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:24:25,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895568334] [2023-12-02 14:24:25,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:24:25,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:24:25,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:24:25,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:24:25,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:24:25,694 INFO L87 Difference]: Start difference. First operand 4707 states and 13402 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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) [2023-12-02 14:24:25,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:24:25,899 INFO L93 Difference]: Finished difference Result 5028 states and 14172 transitions. [2023-12-02 14:24:25,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:24:25,899 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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) Word has length 16 [2023-12-02 14:24:25,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:24:25,943 INFO L225 Difference]: With dead ends: 5028 [2023-12-02 14:24:25,943 INFO L226 Difference]: Without dead ends: 5028 [2023-12-02 14:24:25,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:24:25,944 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 73 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 14:24:25,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 151 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 14:24:25,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5028 states. [2023-12-02 14:24:26,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5028 to 4788. [2023-12-02 14:24:26,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4788 states, 4700 states have (on average 2.9229787234042552) internal successors, (13738), 4787 states have internal predecessors, (13738), 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) [2023-12-02 14:24:26,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4788 states to 4788 states and 13738 transitions. [2023-12-02 14:24:26,160 INFO L78 Accepts]: Start accepts. Automaton has 4788 states and 13738 transitions. Word has length 16 [2023-12-02 14:24:26,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:24:26,160 INFO L495 AbstractCegarLoop]: Abstraction has 4788 states and 13738 transitions. [2023-12-02 14:24:26,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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) [2023-12-02 14:24:26,161 INFO L276 IsEmpty]: Start isEmpty. Operand 4788 states and 13738 transitions. [2023-12-02 14:24:26,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 14:24:26,163 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:24:26,163 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:24:26,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 14:24:26,163 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-12-02 14:24:26,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:24:26,164 INFO L85 PathProgramCache]: Analyzing trace with hash 383557069, now seen corresponding path program 1 times [2023-12-02 14:24:26,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:24:26,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704184061] [2023-12-02 14:24:26,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:24:26,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:24:26,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:24:26,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:24:26,310 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:24:26,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704184061] [2023-12-02 14:24:26,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704184061] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:24:26,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:24:26,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:24:26,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802198888] [2023-12-02 14:24:26,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:24:26,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:24:26,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:24:26,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:24:26,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:24:26,312 INFO L87 Difference]: Start difference. First operand 4788 states and 13738 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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) [2023-12-02 14:24:26,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:24:26,540 INFO L93 Difference]: Finished difference Result 8768 states and 25277 transitions. [2023-12-02 14:24:26,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:24:26,541 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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) Word has length 16 [2023-12-02 14:24:26,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:24:26,585 INFO L225 Difference]: With dead ends: 8768 [2023-12-02 14:24:26,585 INFO L226 Difference]: Without dead ends: 8768 [2023-12-02 14:24:26,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:24:26,587 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 85 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 14:24:26,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 149 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 14:24:26,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8768 states. [2023-12-02 14:24:26,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8768 to 7798. [2023-12-02 14:24:26,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7798 states, 7710 states have (on average 3.019325551232166) internal successors, (23279), 7797 states have internal predecessors, (23279), 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) [2023-12-02 14:24:26,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7798 states to 7798 states and 23279 transitions. [2023-12-02 14:24:26,885 INFO L78 Accepts]: Start accepts. Automaton has 7798 states and 23279 transitions. Word has length 16 [2023-12-02 14:24:26,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:24:26,886 INFO L495 AbstractCegarLoop]: Abstraction has 7798 states and 23279 transitions. [2023-12-02 14:24:26,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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) [2023-12-02 14:24:26,886 INFO L276 IsEmpty]: Start isEmpty. Operand 7798 states and 23279 transitions. [2023-12-02 14:24:26,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 14:24:26,888 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:24:26,888 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:24:26,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 14:24:26,889 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting counter_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-12-02 14:24:26,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:24:26,890 INFO L85 PathProgramCache]: Analyzing trace with hash 2066361633, now seen corresponding path program 1 times [2023-12-02 14:24:26,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:24:26,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573665764] [2023-12-02 14:24:26,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:24:26,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:24:26,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:24:27,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:24:27,051 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:24:27,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573665764] [2023-12-02 14:24:27,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573665764] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:24:27,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971264749] [2023-12-02 14:24:27,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:24:27,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:24:27,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:24:27,055 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:24:27,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 14:24:27,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:24:27,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 14:24:27,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:24:27,290 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:24:27,290 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:24:27,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971264749] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:24:27,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:24:27,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2023-12-02 14:24:27,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247355108] [2023-12-02 14:24:27,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:24:27,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:24:27,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:24:27,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:24:27,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-02 14:24:27,292 INFO L87 Difference]: Start difference. First operand 7798 states and 23279 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 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) [2023-12-02 14:24:27,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:24:27,476 INFO L93 Difference]: Finished difference Result 7468 states and 21988 transitions. [2023-12-02 14:24:27,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:24:27,477 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 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) Word has length 19 [2023-12-02 14:24:27,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:24:27,544 INFO L225 Difference]: With dead ends: 7468 [2023-12-02 14:24:27,544 INFO L226 Difference]: Without dead ends: 7468 [2023-12-02 14:24:27,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-02 14:24:27,546 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 96 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:24:27,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 95 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:24:27,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7468 states. [2023-12-02 14:24:27,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7468 to 7468. [2023-12-02 14:24:27,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7468 states, 7408 states have (on average 2.9681425485961124) internal successors, (21988), 7467 states have internal predecessors, (21988), 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) [2023-12-02 14:24:27,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7468 states to 7468 states and 21988 transitions. [2023-12-02 14:24:27,791 INFO L78 Accepts]: Start accepts. Automaton has 7468 states and 21988 transitions. Word has length 19 [2023-12-02 14:24:27,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:24:27,791 INFO L495 AbstractCegarLoop]: Abstraction has 7468 states and 21988 transitions. [2023-12-02 14:24:27,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 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) [2023-12-02 14:24:27,792 INFO L276 IsEmpty]: Start isEmpty. Operand 7468 states and 21988 transitions. [2023-12-02 14:24:27,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 14:24:27,795 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:24:27,795 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:24:27,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 14:24:27,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:24:27,996 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting counter_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-12-02 14:24:27,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:24:27,996 INFO L85 PathProgramCache]: Analyzing trace with hash -367298053, now seen corresponding path program 1 times [2023-12-02 14:24:27,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:24:27,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978938178] [2023-12-02 14:24:27,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:24:27,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:24:28,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:24:28,186 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:24:28,186 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:24:28,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978938178] [2023-12-02 14:24:28,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978938178] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:24:28,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178385398] [2023-12-02 14:24:28,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:24:28,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:24:28,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:24:28,190 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:24:28,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 14:24:28,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:24:28,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 14:24:28,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:24:28,394 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:24:28,394 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:24:28,476 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:24:28,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178385398] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:24:28,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1554735451] [2023-12-02 14:24:28,485 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-02 14:24:28,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 14:24:28,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-12-02 14:24:28,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518332571] [2023-12-02 14:24:28,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 14:24:28,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 14:24:28,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:24:28,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 14:24:28,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-12-02 14:24:28,488 INFO L87 Difference]: Start difference. First operand 7468 states and 21988 transitions. Second operand has 12 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 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) [2023-12-02 14:24:29,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:24:29,029 INFO L93 Difference]: Finished difference Result 21041 states and 61506 transitions. [2023-12-02 14:24:29,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 14:24:29,030 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 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) Word has length 20 [2023-12-02 14:24:29,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:24:29,091 INFO L225 Difference]: With dead ends: 21041 [2023-12-02 14:24:29,091 INFO L226 Difference]: Without dead ends: 21041 [2023-12-02 14:24:29,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2023-12-02 14:24:29,092 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 468 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 14:24:29,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 299 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 14:24:29,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21041 states. [2023-12-02 14:24:29,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21041 to 18355. [2023-12-02 14:24:29,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18355 states, 18295 states have (on average 3.0634599617381797) internal successors, (56046), 18354 states have internal predecessors, (56046), 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) [2023-12-02 14:24:29,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18355 states to 18355 states and 56046 transitions. [2023-12-02 14:24:29,551 INFO L78 Accepts]: Start accepts. Automaton has 18355 states and 56046 transitions. Word has length 20 [2023-12-02 14:24:29,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:24:29,551 INFO L495 AbstractCegarLoop]: Abstraction has 18355 states and 56046 transitions. [2023-12-02 14:24:29,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 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) [2023-12-02 14:24:29,551 INFO L276 IsEmpty]: Start isEmpty. Operand 18355 states and 56046 transitions. [2023-12-02 14:24:29,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-02 14:24:29,554 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:24:29,554 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:24:29,560 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 14:24:29,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:24:29,759 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting counter_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-12-02 14:24:29,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:24:29,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1498663012, now seen corresponding path program 1 times [2023-12-02 14:24:29,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:24:29,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742012286] [2023-12-02 14:24:29,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:24:29,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:24:29,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:24:29,992 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:24:29,992 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:24:29,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742012286] [2023-12-02 14:24:29,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742012286] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:24:29,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710016238] [2023-12-02 14:24:29,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:24:29,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:24:29,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:24:29,996 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:24:29,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 14:24:30,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:24:30,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 14:24:30,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:24:30,195 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:24:30,196 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:24:30,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710016238] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:24:30,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:24:30,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-12-02 14:24:30,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932385389] [2023-12-02 14:24:30,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:24:30,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:24:30,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:24:30,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:24:30,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-02 14:24:30,198 INFO L87 Difference]: Start difference. First operand 18355 states and 56046 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 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) [2023-12-02 14:24:30,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:24:30,477 INFO L93 Difference]: Finished difference Result 18653 states and 56184 transitions. [2023-12-02 14:24:30,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:24:30,478 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 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) Word has length 21 [2023-12-02 14:24:30,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:24:30,569 INFO L225 Difference]: With dead ends: 18653 [2023-12-02 14:24:30,569 INFO L226 Difference]: Without dead ends: 18653 [2023-12-02 14:24:30,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-02 14:24:30,570 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 90 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:24:30,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 192 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:24:30,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18653 states. [2023-12-02 14:24:31,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18653 to 18021. [2023-12-02 14:24:31,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18021 states, 17974 states have (on average 3.05029487036831) internal successors, (54826), 18020 states have internal predecessors, (54826), 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) [2023-12-02 14:24:31,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18021 states to 18021 states and 54826 transitions. [2023-12-02 14:24:31,107 INFO L78 Accepts]: Start accepts. Automaton has 18021 states and 54826 transitions. Word has length 21 [2023-12-02 14:24:31,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:24:31,107 INFO L495 AbstractCegarLoop]: Abstraction has 18021 states and 54826 transitions. [2023-12-02 14:24:31,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 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) [2023-12-02 14:24:31,107 INFO L276 IsEmpty]: Start isEmpty. Operand 18021 states and 54826 transitions. [2023-12-02 14:24:31,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-02 14:24:31,110 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:24:31,110 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:24:31,163 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 14:24:31,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:24:31,311 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting counter_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-12-02 14:24:31,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:24:31,311 INFO L85 PathProgramCache]: Analyzing trace with hash -786086113, now seen corresponding path program 1 times [2023-12-02 14:24:31,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:24:31,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515690877] [2023-12-02 14:24:31,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:24:31,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:24:31,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:24:31,396 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 14:24:31,396 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:24:31,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515690877] [2023-12-02 14:24:31,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515690877] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:24:31,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:24:31,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:24:31,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975964378] [2023-12-02 14:24:31,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:24:31,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:24:31,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:24:31,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:24:31,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:24:31,398 INFO L87 Difference]: Start difference. First operand 18021 states and 54826 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 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) [2023-12-02 14:24:31,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:24:31,596 INFO L93 Difference]: Finished difference Result 17687 states and 53606 transitions. [2023-12-02 14:24:31,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:24:31,597 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 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) Word has length 22 [2023-12-02 14:24:31,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:24:31,636 INFO L225 Difference]: With dead ends: 17687 [2023-12-02 14:24:31,636 INFO L226 Difference]: Without dead ends: 17687 [2023-12-02 14:24:31,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:24:31,637 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 68 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:24:31,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 133 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:24:31,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17687 states. [2023-12-02 14:24:32,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17687 to 15147. [2023-12-02 14:24:32,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15147 states, 15113 states have (on average 3.043406338913518) internal successors, (45995), 15146 states have internal predecessors, (45995), 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) [2023-12-02 14:24:32,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15147 states to 15147 states and 45995 transitions. [2023-12-02 14:24:32,093 INFO L78 Accepts]: Start accepts. Automaton has 15147 states and 45995 transitions. Word has length 22 [2023-12-02 14:24:32,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:24:32,094 INFO L495 AbstractCegarLoop]: Abstraction has 15147 states and 45995 transitions. [2023-12-02 14:24:32,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 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) [2023-12-02 14:24:32,094 INFO L276 IsEmpty]: Start isEmpty. Operand 15147 states and 45995 transitions. [2023-12-02 14:24:32,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-02 14:24:32,099 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:24:32,099 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:24:32,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 14:24:32,099 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-12-02 14:24:32,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:24:32,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1473816851, now seen corresponding path program 1 times [2023-12-02 14:24:32,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:24:32,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741227818] [2023-12-02 14:24:32,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:24:32,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:24:32,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:24:32,271 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:24:32,271 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:24:32,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741227818] [2023-12-02 14:24:32,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741227818] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:24:32,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213475708] [2023-12-02 14:24:32,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:24:32,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:24:32,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:24:32,273 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:24:32,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 14:24:32,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:24:32,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 14:24:32,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:24:32,479 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:24:32,479 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:24:32,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213475708] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:24:32,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:24:32,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-12-02 14:24:32,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137891949] [2023-12-02 14:24:32,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:24:32,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 14:24:32,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:24:32,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 14:24:32,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-02 14:24:32,481 INFO L87 Difference]: Start difference. First operand 15147 states and 45995 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 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) [2023-12-02 14:24:32,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:24:32,824 INFO L93 Difference]: Finished difference Result 16357 states and 48133 transitions. [2023-12-02 14:24:32,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 14:24:32,825 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 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) Word has length 23 [2023-12-02 14:24:32,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:24:32,876 INFO L225 Difference]: With dead ends: 16357 [2023-12-02 14:24:32,876 INFO L226 Difference]: Without dead ends: 16357 [2023-12-02 14:24:32,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-12-02 14:24:32,877 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 159 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 14:24:32,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 225 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 14:24:32,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16357 states. [2023-12-02 14:24:33,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16357 to 14747. [2023-12-02 14:24:33,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14747 states, 14722 states have (on average 3.0416383643526697) internal successors, (44779), 14746 states have internal predecessors, (44779), 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) [2023-12-02 14:24:33,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14747 states to 14747 states and 44779 transitions. [2023-12-02 14:24:33,337 INFO L78 Accepts]: Start accepts. Automaton has 14747 states and 44779 transitions. Word has length 23 [2023-12-02 14:24:33,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:24:33,338 INFO L495 AbstractCegarLoop]: Abstraction has 14747 states and 44779 transitions. [2023-12-02 14:24:33,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 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) [2023-12-02 14:24:33,338 INFO L276 IsEmpty]: Start isEmpty. Operand 14747 states and 44779 transitions. [2023-12-02 14:24:33,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-02 14:24:33,342 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:24:33,343 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:24:33,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 14:24:33,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 14:24:33,549 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-12-02 14:24:33,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:24:33,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1556317147, now seen corresponding path program 1 times [2023-12-02 14:24:33,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:24:33,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587472459] [2023-12-02 14:24:33,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:24:33,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:24:33,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:24:33,654 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:24:33,655 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:24:33,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587472459] [2023-12-02 14:24:33,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587472459] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:24:33,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167173338] [2023-12-02 14:24:33,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:24:33,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:24:33,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:24:33,657 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:24:33,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 14:24:33,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:24:33,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 14:24:33,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:24:33,844 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:24:33,844 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:24:33,890 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:24:33,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167173338] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:24:33,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1327770884] [2023-12-02 14:24:33,891 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-02 14:24:33,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 14:24:33,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-12-02 14:24:33,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911359389] [2023-12-02 14:24:33,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 14:24:33,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 14:24:33,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:24:33,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 14:24:33,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-12-02 14:24:33,893 INFO L87 Difference]: Start difference. First operand 14747 states and 44779 transitions. Second operand has 12 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 12 states have internal predecessors, (47), 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) [2023-12-02 14:24:34,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:24:34,439 INFO L93 Difference]: Finished difference Result 39037 states and 115339 transitions. [2023-12-02 14:24:34,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 14:24:34,440 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 12 states have internal predecessors, (47), 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) Word has length 24 [2023-12-02 14:24:34,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:24:34,523 INFO L225 Difference]: With dead ends: 39037 [2023-12-02 14:24:34,523 INFO L226 Difference]: Without dead ends: 39037 [2023-12-02 14:24:34,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2023-12-02 14:24:34,524 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 539 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 14:24:34,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [539 Valid, 339 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 14:24:34,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39037 states. [2023-12-02 14:24:35,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39037 to 32597. [2023-12-02 14:24:35,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32597 states, 32572 states have (on average 3.1291600147365837) internal successors, (101923), 32596 states have internal predecessors, (101923), 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) [2023-12-02 14:24:35,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32597 states to 32597 states and 101923 transitions. [2023-12-02 14:24:35,254 INFO L78 Accepts]: Start accepts. Automaton has 32597 states and 101923 transitions. Word has length 24 [2023-12-02 14:24:35,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:24:35,254 INFO L495 AbstractCegarLoop]: Abstraction has 32597 states and 101923 transitions. [2023-12-02 14:24:35,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 12 states have internal predecessors, (47), 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) [2023-12-02 14:24:35,254 INFO L276 IsEmpty]: Start isEmpty. Operand 32597 states and 101923 transitions. [2023-12-02 14:24:35,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-02 14:24:35,266 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:24:35,267 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:24:35,273 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 14:24:35,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:24:35,467 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting counter_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-12-02 14:24:35,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:24:35,468 INFO L85 PathProgramCache]: Analyzing trace with hash -873534022, now seen corresponding path program 2 times [2023-12-02 14:24:35,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:24:35,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741373103] [2023-12-02 14:24:35,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:24:35,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:24:35,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:24:35,737 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:24:35,737 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:24:35,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741373103] [2023-12-02 14:24:35,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741373103] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:24:35,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713945643] [2023-12-02 14:24:35,737 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 14:24:35,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:24:35,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:24:35,739 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:24:35,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 14:24:35,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-02 14:24:35,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:24:35,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 14:24:35,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:24:35,960 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:24:35,960 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:24:36,277 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:24:36,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713945643] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:24:36,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [607349031] [2023-12-02 14:24:36,278 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-02 14:24:36,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 14:24:36,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2023-12-02 14:24:36,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952693656] [2023-12-02 14:24:36,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 14:24:36,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-02 14:24:36,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:24:36,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-02 14:24:36,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2023-12-02 14:24:36,281 INFO L87 Difference]: Start difference. First operand 32597 states and 101923 transitions. Second operand has 24 states, 23 states have (on average 3.6956521739130435) internal successors, (85), 23 states have internal predecessors, (85), 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) [2023-12-02 14:24:37,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:24:37,578 INFO L93 Difference]: Finished difference Result 85562 states and 255751 transitions. [2023-12-02 14:24:37,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-02 14:24:37,578 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.6956521739130435) internal successors, (85), 23 states have internal predecessors, (85), 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) Word has length 35 [2023-12-02 14:24:37,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:24:37,818 INFO L225 Difference]: With dead ends: 85562 [2023-12-02 14:24:37,819 INFO L226 Difference]: Without dead ends: 85562 [2023-12-02 14:24:37,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=332, Invalid=790, Unknown=0, NotChecked=0, Total=1122 [2023-12-02 14:24:37,820 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 1522 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 14:24:37,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1522 Valid, 574 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 14:24:37,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85562 states. [2023-12-02 14:24:39,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85562 to 69557. [2023-12-02 14:24:39,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69557 states, 69532 states have (on average 3.1934792613472935) internal successors, (222049), 69556 states have internal predecessors, (222049), 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) [2023-12-02 14:24:39,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69557 states to 69557 states and 222049 transitions. [2023-12-02 14:24:39,718 INFO L78 Accepts]: Start accepts. Automaton has 69557 states and 222049 transitions. Word has length 35 [2023-12-02 14:24:39,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:24:39,718 INFO L495 AbstractCegarLoop]: Abstraction has 69557 states and 222049 transitions. [2023-12-02 14:24:39,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.6956521739130435) internal successors, (85), 23 states have internal predecessors, (85), 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) [2023-12-02 14:24:39,719 INFO L276 IsEmpty]: Start isEmpty. Operand 69557 states and 222049 transitions. [2023-12-02 14:24:39,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-02 14:24:39,753 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:24:39,753 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:24:39,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-02 14:24:39,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:24:39,954 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-12-02 14:24:39,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:24:39,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1153750059, now seen corresponding path program 2 times [2023-12-02 14:24:39,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:24:39,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532989726] [2023-12-02 14:24:39,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:24:39,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:24:39,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:24:40,309 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:24:40,310 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:24:40,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532989726] [2023-12-02 14:24:40,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532989726] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:24:40,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331869386] [2023-12-02 14:24:40,310 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 14:24:40,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:24:40,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:24:40,312 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:24:40,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 14:24:40,493 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-02 14:24:40,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:24:40,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 14:24:40,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:24:40,573 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:24:40,574 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:24:40,730 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:24:40,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331869386] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:24:40,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [977534150] [2023-12-02 14:24:40,731 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-02 14:24:40,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 14:24:40,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2023-12-02 14:24:40,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424658730] [2023-12-02 14:24:40,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 14:24:40,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-02 14:24:40,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:24:40,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-02 14:24:40,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2023-12-02 14:24:40,735 INFO L87 Difference]: Start difference. First operand 69557 states and 222049 transitions. Second operand has 24 states, 23 states have (on average 3.869565217391304) internal successors, (89), 24 states have internal predecessors, (89), 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) [2023-12-02 14:24:42,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:24:42,516 INFO L93 Difference]: Finished difference Result 180877 states and 544933 transitions. [2023-12-02 14:24:42,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-02 14:24:42,516 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.869565217391304) internal successors, (89), 24 states have internal predecessors, (89), 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) Word has length 45 [2023-12-02 14:24:42,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:24:43,180 INFO L225 Difference]: With dead ends: 180877 [2023-12-02 14:24:43,180 INFO L226 Difference]: Without dead ends: 180877 [2023-12-02 14:24:43,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=332, Invalid=790, Unknown=0, NotChecked=0, Total=1122 [2023-12-02 14:24:43,181 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 1556 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1556 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 14:24:43,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1556 Valid, 742 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 14:24:43,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180877 states. [2023-12-02 14:24:46,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180877 to 145577. [2023-12-02 14:24:46,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145577 states, 145552 states have (on average 3.234809552599758) internal successors, (470833), 145576 states have internal predecessors, (470833), 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) [2023-12-02 14:24:47,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145577 states to 145577 states and 470833 transitions. [2023-12-02 14:24:47,140 INFO L78 Accepts]: Start accepts. Automaton has 145577 states and 470833 transitions. Word has length 45 [2023-12-02 14:24:47,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:24:47,141 INFO L495 AbstractCegarLoop]: Abstraction has 145577 states and 470833 transitions. [2023-12-02 14:24:47,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.869565217391304) internal successors, (89), 24 states have internal predecessors, (89), 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) [2023-12-02 14:24:47,141 INFO L276 IsEmpty]: Start isEmpty. Operand 145577 states and 470833 transitions. [2023-12-02 14:24:47,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-02 14:24:47,237 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:24:47,238 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:24:47,243 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 14:24:47,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:24:47,438 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting counter_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-12-02 14:24:47,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:24:47,439 INFO L85 PathProgramCache]: Analyzing trace with hash -697221222, now seen corresponding path program 3 times [2023-12-02 14:24:47,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:24:47,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493403386] [2023-12-02 14:24:47,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:24:47,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:24:47,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:24:48,409 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:24:48,409 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:24:48,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493403386] [2023-12-02 14:24:48,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493403386] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:24:48,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852794030] [2023-12-02 14:24:48,410 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 14:24:48,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:24:48,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:24:48,411 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:24:48,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 14:24:48,548 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 14:24:48,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:24:48,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-02 14:24:48,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:24:48,648 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:24:48,648 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:24:49,082 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:24:49,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852794030] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:24:49,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [797899483] [2023-12-02 14:24:49,083 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-02 14:24:49,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 14:24:49,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 46 [2023-12-02 14:24:49,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382573234] [2023-12-02 14:24:49,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 14:24:49,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-02 14:24:49,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:24:49,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-02 14:24:49,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2023-12-02 14:24:49,086 INFO L87 Difference]: Start difference. First operand 145577 states and 470833 transitions. Second operand has 48 states, 47 states have (on average 3.0851063829787235) internal successors, (145), 47 states have internal predecessors, (145), 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) [2023-12-02 14:24:53,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:24:53,592 INFO L93 Difference]: Finished difference Result 381614 states and 1151911 transitions. [2023-12-02 14:24:53,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-02 14:24:53,593 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 3.0851063829787235) internal successors, (145), 47 states have internal predecessors, (145), 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) Word has length 65 [2023-12-02 14:24:53,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:24:55,342 INFO L225 Difference]: With dead ends: 381614 [2023-12-02 14:24:55,342 INFO L226 Difference]: Without dead ends: 381614 [2023-12-02 14:24:55,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1048 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1382, Invalid=3448, Unknown=0, NotChecked=0, Total=4830 [2023-12-02 14:24:55,344 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 5180 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 1734 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5180 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 1747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 14:24:55,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5180 Valid, 1208 Invalid, 1747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1734 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 14:24:55,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381614 states. [2023-12-02 14:25:01,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381614 to 300137. [2023-12-02 14:25:02,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300137 states, 300112 states have (on average 3.265704137122141) internal successors, (980077), 300136 states have internal predecessors, (980077), 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) [2023-12-02 14:25:04,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300137 states to 300137 states and 980077 transitions. [2023-12-02 14:25:04,025 INFO L78 Accepts]: Start accepts. Automaton has 300137 states and 980077 transitions. Word has length 65 [2023-12-02 14:25:04,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:25:04,025 INFO L495 AbstractCegarLoop]: Abstraction has 300137 states and 980077 transitions. [2023-12-02 14:25:04,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 3.0851063829787235) internal successors, (145), 47 states have internal predecessors, (145), 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) [2023-12-02 14:25:04,025 INFO L276 IsEmpty]: Start isEmpty. Operand 300137 states and 980077 transitions. [2023-12-02 14:25:04,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-02 14:25:04,197 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:25:04,197 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:25:04,203 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-02 14:25:04,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-02 14:25:04,398 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-12-02 14:25:04,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:25:04,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1666659221, now seen corresponding path program 3 times [2023-12-02 14:25:04,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:25:04,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92172233] [2023-12-02 14:25:04,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:25:04,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:25:04,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:25:05,374 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:25:05,375 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:25:05,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92172233] [2023-12-02 14:25:05,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92172233] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:25:05,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44008003] [2023-12-02 14:25:05,375 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 14:25:05,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:25:05,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:25:05,378 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:25:05,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 14:25:05,531 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 14:25:05,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:25:05,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-02 14:25:05,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:25:05,635 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:25:05,635 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:25:06,058 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:25:06,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44008003] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:25:06,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2111407650] [2023-12-02 14:25:06,059 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-02 14:25:06,060 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 14:25:06,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2023-12-02 14:25:06,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768898318] [2023-12-02 14:25:06,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 14:25:06,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-02 14:25:06,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:25:06,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-02 14:25:06,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2023-12-02 14:25:06,063 INFO L87 Difference]: Start difference. First operand 300137 states and 980077 transitions. Second operand has 48 states, 47 states have (on average 3.6808510638297873) internal successors, (173), 48 states have internal predecessors, (173), 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) [2023-12-02 14:25:13,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:25:13,883 INFO L93 Difference]: Finished difference Result 775597 states and 2357113 transitions. [2023-12-02 14:25:13,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-02 14:25:13,883 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 3.6808510638297873) internal successors, (173), 48 states have internal predecessors, (173), 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) Word has length 87 [2023-12-02 14:25:13,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:25:17,416 INFO L225 Difference]: With dead ends: 775597 [2023-12-02 14:25:17,416 INFO L226 Difference]: Without dead ends: 775597 [2023-12-02 14:25:17,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1048 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1382, Invalid=3448, Unknown=0, NotChecked=0, Total=4830 [2023-12-02 14:25:17,418 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 4726 mSDsluCounter, 1375 mSDsCounter, 0 mSdLazyCounter, 1790 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4726 SdHoareTripleChecker+Valid, 1431 SdHoareTripleChecker+Invalid, 1791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 14:25:17,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4726 Valid, 1431 Invalid, 1791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1790 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 14:25:18,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775597 states. [2023-12-02 14:25:31,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775597 to 613457. [2023-12-02 14:25:32,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613457 states, 613432 states have (on average 3.2858230415107137) internal successors, (2015629), 613456 states have internal predecessors, (2015629), 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) [2023-12-02 14:25:36,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613457 states to 613457 states and 2015629 transitions. [2023-12-02 14:25:36,419 INFO L78 Accepts]: Start accepts. Automaton has 613457 states and 2015629 transitions. Word has length 87 [2023-12-02 14:25:36,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:25:36,419 INFO L495 AbstractCegarLoop]: Abstraction has 613457 states and 2015629 transitions. [2023-12-02 14:25:36,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 3.6808510638297873) internal successors, (173), 48 states have internal predecessors, (173), 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) [2023-12-02 14:25:36,420 INFO L276 IsEmpty]: Start isEmpty. Operand 613457 states and 2015629 transitions. [2023-12-02 14:25:36,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-02 14:25:36,857 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:25:36,857 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:25:36,863 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-02 14:25:37,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:25:37,058 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting counter_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-12-02 14:25:37,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:25:37,058 INFO L85 PathProgramCache]: Analyzing trace with hash -290043046, now seen corresponding path program 4 times [2023-12-02 14:25:37,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:25:37,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384134103] [2023-12-02 14:25:37,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:25:37,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:25:37,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:25:38,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:25:38,530 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:25:38,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384134103] [2023-12-02 14:25:38,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384134103] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:25:38,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728227844] [2023-12-02 14:25:38,530 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 14:25:38,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:25:38,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:25:38,531 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:25:38,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a81dff-1b30-483d-bb31-d6f14b768322/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 14:25:38,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:25:38,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 47 conjunts are in the unsatisfiable core [2023-12-02 14:25:38,671 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:25:38,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:25:38,833 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:25:40,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:25:40,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728227844] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:25:40,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1504966582] [2023-12-02 14:25:40,570 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-02 14:25:40,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 14:25:40,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 46] total 94 [2023-12-02 14:25:40,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562371146] [2023-12-02 14:25:40,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 14:25:40,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-12-02 14:25:40,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:25:40,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-12-02 14:25:40,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2351, Invalid=6769, Unknown=0, NotChecked=0, Total=9120 [2023-12-02 14:25:40,576 INFO L87 Difference]: Start difference. First operand 613457 states and 2015629 transitions. Second operand has 96 states, 95 states have (on average 2.789473684210526) internal successors, (265), 95 states have internal predecessors, (265), 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) [2023-12-02 14:26:01,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:26:01,280 INFO L93 Difference]: Finished difference Result 1608758 states and 4877431 transitions. [2023-12-02 14:26:01,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2023-12-02 14:26:01,281 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 2.789473684210526) internal successors, (265), 95 states have internal predecessors, (265), 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) Word has length 125 [2023-12-02 14:26:01,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:26:08,764 INFO L225 Difference]: With dead ends: 1608758 [2023-12-02 14:26:08,764 INFO L226 Difference]: Without dead ends: 1608758 [2023-12-02 14:26:08,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4408 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=5642, Invalid=14380, Unknown=0, NotChecked=0, Total=20022 [2023-12-02 14:26:08,770 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 10278 mSDsluCounter, 2378 mSDsCounter, 0 mSdLazyCounter, 3471 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10278 SdHoareTripleChecker+Valid, 2417 SdHoareTripleChecker+Invalid, 3496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 3471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-02 14:26:08,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10278 Valid, 2417 Invalid, 3496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 3471 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-02 14:26:11,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608758 states.