./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.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_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/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_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/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_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/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 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 19:09:33,026 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 19:09:33,112 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-12-02 19:09:33,116 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 19:09:33,117 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 19:09:33,140 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 19:09:33,141 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 19:09:33,142 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 19:09:33,142 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 19:09:33,143 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 19:09:33,143 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 19:09:33,144 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 19:09:33,144 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 19:09:33,145 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 19:09:33,145 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 19:09:33,146 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 19:09:33,146 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 19:09:33,147 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 19:09:33,147 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 19:09:33,148 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 19:09:33,148 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 19:09:33,149 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 19:09:33,150 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 19:09:33,150 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 19:09:33,151 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 19:09:33,151 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 19:09:33,151 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 19:09:33,152 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 19:09:33,152 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 19:09:33,153 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 19:09:33,153 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 19:09:33,154 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 19:09:33,154 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 19:09:33,154 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 19:09:33,155 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 19:09:33,155 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 19:09:33,155 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 19:09:33,156 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 19:09:33,156 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 19:09:33,157 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:09:33,157 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 19:09:33,157 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 19:09:33,158 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 19:09:33,158 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 19:09:33,158 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 19:09:33,158 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 19:09:33,158 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 19:09:33,159 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 19:09:33,159 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 19:09:33,159 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_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a [2023-12-02 19:09:33,399 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 19:09:33,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 19:09:33,423 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 19:09:33,424 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 19:09:33,425 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 19:09:33,426 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2023-12-02 19:09:36,202 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 19:09:36,454 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 19:09:36,455 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2023-12-02 19:09:36,473 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/data/c99c6facf/b5a1807394384b25b96558ef923438c7/FLAG3e76fe20c [2023-12-02 19:09:36,485 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/data/c99c6facf/b5a1807394384b25b96558ef923438c7 [2023-12-02 19:09:36,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 19:09:36,488 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 19:09:36,490 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 19:09:36,490 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 19:09:36,494 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 19:09:36,495 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:09:36" (1/1) ... [2023-12-02 19:09:36,496 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@566be598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:09:36, skipping insertion in model container [2023-12-02 19:09:36,496 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:09:36" (1/1) ... [2023-12-02 19:09:36,551 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 19:09:36,979 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:09:36,993 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 19:09:37,045 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:09:37,139 INFO L206 MainTranslator]: Completed translation [2023-12-02 19:09:37,139 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:09:37 WrapperNode [2023-12-02 19:09:37,139 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 19:09:37,140 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 19:09:37,141 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 19:09:37,141 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 19:09:37,148 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:09:37" (1/1) ... [2023-12-02 19:09:37,168 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:09:37" (1/1) ... [2023-12-02 19:09:37,193 INFO L138 Inliner]: procedures = 365, calls = 23, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-12-02 19:09:37,193 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 19:09:37,194 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 19:09:37,194 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 19:09:37,195 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 19:09:37,204 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:09:37" (1/1) ... [2023-12-02 19:09:37,204 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:09:37" (1/1) ... [2023-12-02 19:09:37,208 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:09:37" (1/1) ... [2023-12-02 19:09:37,209 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:09:37" (1/1) ... [2023-12-02 19:09:37,215 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:09:37" (1/1) ... [2023-12-02 19:09:37,218 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:09:37" (1/1) ... [2023-12-02 19:09:37,221 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:09:37" (1/1) ... [2023-12-02 19:09:37,222 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:09:37" (1/1) ... [2023-12-02 19:09:37,225 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 19:09:37,226 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 19:09:37,227 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 19:09:37,227 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 19:09:37,228 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:09:37" (1/1) ... [2023-12-02 19:09:37,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:09:37,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:09:37,269 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 19:09:37,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 19:09:37,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 19:09:37,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 19:09:37,319 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-12-02 19:09:37,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 19:09:37,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 19:09:37,321 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-12-02 19:09:37,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 19:09:37,322 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2023-12-02 19:09:37,323 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2023-12-02 19:09:37,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 19:09:37,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 19:09:37,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 19:09:37,325 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 19:09:37,472 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 19:09:37,473 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 19:09:37,648 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 19:09:37,760 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 19:09:37,760 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 19:09:37,761 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:09:37 BoogieIcfgContainer [2023-12-02 19:09:37,761 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 19:09:37,763 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 19:09:37,763 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 19:09:37,766 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 19:09:37,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:09:36" (1/3) ... [2023-12-02 19:09:37,767 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@501328e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:09:37, skipping insertion in model container [2023-12-02 19:09:37,767 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:09:37" (2/3) ... [2023-12-02 19:09:37,768 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@501328e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:09:37, skipping insertion in model container [2023-12-02 19:09:37,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:09:37" (3/3) ... [2023-12-02 19:09:37,769 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2023-12-02 19:09:37,775 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-12-02 19:09:37,783 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 19:09:37,783 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-12-02 19:09:37,783 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-02 19:09:37,818 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-12-02 19:09:37,843 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 37 places, 35 transitions, 77 flow [2023-12-02 19:09:37,876 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 226 states, 202 states have (on average 2.227722772277228) internal successors, (450), 225 states have internal predecessors, (450), 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 19:09:37,892 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 19:09:37,898 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;@5ea62e8f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 19:09:37,898 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-12-02 19:09:37,901 INFO L276 IsEmpty]: Start isEmpty. Operand has 226 states, 202 states have (on average 2.227722772277228) internal successors, (450), 225 states have internal predecessors, (450), 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 19:09:37,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 19:09:37,908 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:09:37,909 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:09:37,910 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread_function_mutexErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-12-02 19:09:37,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:09:37,914 INFO L85 PathProgramCache]: Analyzing trace with hash -122003393, now seen corresponding path program 1 times [2023-12-02 19:09:37,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:09:37,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845811445] [2023-12-02 19:09:37,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:09:37,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:09:38,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:09:38,170 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 19:09:38,170 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:09:38,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845811445] [2023-12-02 19:09:38,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845811445] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:09:38,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:09:38,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 19:09:38,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243411425] [2023-12-02 19:09:38,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:09:38,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:09:38,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:09:38,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:09:38,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:09:38,209 INFO L87 Difference]: Start difference. First operand has 226 states, 202 states have (on average 2.227722772277228) internal successors, (450), 225 states have internal predecessors, (450), 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 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 19:09:38,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:09:38,343 INFO L93 Difference]: Finished difference Result 301 states and 600 transitions. [2023-12-02 19:09:38,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 19:09:38,345 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2023-12-02 19:09:38,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:09:38,357 INFO L225 Difference]: With dead ends: 301 [2023-12-02 19:09:38,358 INFO L226 Difference]: Without dead ends: 301 [2023-12-02 19:09:38,359 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 19:09:38,362 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 32 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:09:38,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 47 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:09:38,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2023-12-02 19:09:38,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 299. [2023-12-02 19:09:38,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 275 states have (on average 2.1745454545454543) internal successors, (598), 298 states have internal predecessors, (598), 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 19:09:38,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 598 transitions. [2023-12-02 19:09:38,419 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 598 transitions. Word has length 7 [2023-12-02 19:09:38,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:09:38,420 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 598 transitions. [2023-12-02 19:09:38,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 19:09:38,421 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 598 transitions. [2023-12-02 19:09:38,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 19:09:38,422 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:09:38,422 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:09:38,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 19:09:38,423 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread_function_mutexErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-12-02 19:09:38,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:09:38,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1486080578, now seen corresponding path program 1 times [2023-12-02 19:09:38,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:09:38,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7664262] [2023-12-02 19:09:38,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:09:38,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:09:38,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:09:38,518 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 19:09:38,519 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:09:38,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7664262] [2023-12-02 19:09:38,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7664262] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:09:38,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:09:38,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:09:38,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044959182] [2023-12-02 19:09:38,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:09:38,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:09:38,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:09:38,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:09:38,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:09:38,523 INFO L87 Difference]: Start difference. First operand 299 states and 598 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 19:09:38,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:09:38,615 INFO L93 Difference]: Finished difference Result 451 states and 902 transitions. [2023-12-02 19:09:38,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:09:38,615 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2023-12-02 19:09:38,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:09:38,619 INFO L225 Difference]: With dead ends: 451 [2023-12-02 19:09:38,620 INFO L226 Difference]: Without dead ends: 451 [2023-12-02 19:09:38,620 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 19:09:38,622 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 35 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:09:38,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 58 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:09:38,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2023-12-02 19:09:38,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 423. [2023-12-02 19:09:38,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 399 states have (on average 2.1904761904761907) internal successors, (874), 422 states have internal predecessors, (874), 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 19:09:38,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 874 transitions. [2023-12-02 19:09:38,682 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 874 transitions. Word has length 11 [2023-12-02 19:09:38,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:09:38,683 INFO L495 AbstractCegarLoop]: Abstraction has 423 states and 874 transitions. [2023-12-02 19:09:38,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 19:09:38,683 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 874 transitions. [2023-12-02 19:09:38,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 19:09:38,686 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:09:38,686 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:09:38,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 19:09:38,686 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-12-02 19:09:38,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:09:38,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1666765546, now seen corresponding path program 1 times [2023-12-02 19:09:38,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:09:38,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359099515] [2023-12-02 19:09:38,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:09:38,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:09:38,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:09:38,784 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 19:09:38,785 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:09:38,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359099515] [2023-12-02 19:09:38,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359099515] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:09:38,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:09:38,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:09:38,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260618945] [2023-12-02 19:09:38,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:09:38,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:09:38,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:09:38,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:09:38,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:09:38,788 INFO L87 Difference]: Start difference. First operand 423 states and 874 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 19:09:38,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:09:38,875 INFO L93 Difference]: Finished difference Result 649 states and 1332 transitions. [2023-12-02 19:09:38,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:09:38,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2023-12-02 19:09:38,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:09:38,881 INFO L225 Difference]: With dead ends: 649 [2023-12-02 19:09:38,881 INFO L226 Difference]: Without dead ends: 649 [2023-12-02 19:09:38,881 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 19:09:38,883 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 35 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:09:38,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 55 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:09:38,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2023-12-02 19:09:38,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 613. [2023-12-02 19:09:38,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 589 states have (on average 2.200339558573854) internal successors, (1296), 612 states have internal predecessors, (1296), 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 19:09:38,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 1296 transitions. [2023-12-02 19:09:38,912 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 1296 transitions. Word has length 11 [2023-12-02 19:09:38,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:09:38,913 INFO L495 AbstractCegarLoop]: Abstraction has 613 states and 1296 transitions. [2023-12-02 19:09:38,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 19:09:38,913 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 1296 transitions. [2023-12-02 19:09:38,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-02 19:09:38,914 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:09:38,914 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:09:38,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 19:09:38,915 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-12-02 19:09:38,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:09:38,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1247288478, now seen corresponding path program 1 times [2023-12-02 19:09:38,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:09:38,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271487752] [2023-12-02 19:09:38,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:09:38,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:09:38,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:09:38,999 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 19:09:38,999 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:09:38,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271487752] [2023-12-02 19:09:39,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271487752] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:09:39,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:09:39,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:09:39,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458736925] [2023-12-02 19:09:39,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:09:39,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:09:39,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:09:39,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:09:39,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:09:39,002 INFO L87 Difference]: Start difference. First operand 613 states and 1296 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 19:09:39,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:09:39,045 INFO L93 Difference]: Finished difference Result 477 states and 956 transitions. [2023-12-02 19:09:39,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:09:39,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 13 [2023-12-02 19:09:39,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:09:39,049 INFO L225 Difference]: With dead ends: 477 [2023-12-02 19:09:39,049 INFO L226 Difference]: Without dead ends: 477 [2023-12-02 19:09:39,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 19:09:39,051 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 21 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:09:39,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 31 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:09:39,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2023-12-02 19:09:39,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 473. [2023-12-02 19:09:39,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 449 states have (on average 2.129175946547884) internal successors, (956), 472 states have internal predecessors, (956), 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 19:09:39,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 956 transitions. [2023-12-02 19:09:39,074 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 956 transitions. Word has length 13 [2023-12-02 19:09:39,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:09:39,074 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 956 transitions. [2023-12-02 19:09:39,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 19:09:39,075 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 956 transitions. [2023-12-02 19:09:39,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-02 19:09:39,076 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:09:39,076 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:09:39,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 19:09:39,076 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-12-02 19:09:39,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:09:39,077 INFO L85 PathProgramCache]: Analyzing trace with hash 50131925, now seen corresponding path program 1 times [2023-12-02 19:09:39,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:09:39,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893901071] [2023-12-02 19:09:39,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:09:39,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:09:39,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:09:39,152 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 19:09:39,152 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:09:39,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893901071] [2023-12-02 19:09:39,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893901071] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:09:39,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:09:39,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:09:39,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097345175] [2023-12-02 19:09:39,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:09:39,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:09:39,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:09:39,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:09:39,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:09:39,155 INFO L87 Difference]: Start difference. First operand 473 states and 956 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 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 19:09:39,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:09:39,248 INFO L93 Difference]: Finished difference Result 649 states and 1299 transitions. [2023-12-02 19:09:39,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 19:09:39,249 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 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 19:09:39,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:09:39,254 INFO L225 Difference]: With dead ends: 649 [2023-12-02 19:09:39,254 INFO L226 Difference]: Without dead ends: 649 [2023-12-02 19:09:39,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:09:39,255 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 31 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:09:39,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 60 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:09:39,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2023-12-02 19:09:39,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 564. [2023-12-02 19:09:39,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 540 states have (on average 2.1333333333333333) internal successors, (1152), 563 states have internal predecessors, (1152), 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 19:09:39,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 1152 transitions. [2023-12-02 19:09:39,272 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 1152 transitions. Word has length 14 [2023-12-02 19:09:39,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:09:39,273 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 1152 transitions. [2023-12-02 19:09:39,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 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 19:09:39,273 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 1152 transitions. [2023-12-02 19:09:39,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-02 19:09:39,274 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:09:39,274 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:09:39,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 19:09:39,274 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread_function_mutexErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-12-02 19:09:39,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:09:39,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1790560784, now seen corresponding path program 1 times [2023-12-02 19:09:39,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:09:39,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828164167] [2023-12-02 19:09:39,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:09:39,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:09:39,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:09:39,347 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 19:09:39,347 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:09:39,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828164167] [2023-12-02 19:09:39,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828164167] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:09:39,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:09:39,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:09:39,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226190689] [2023-12-02 19:09:39,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:09:39,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:09:39,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:09:39,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:09:39,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:09:39,351 INFO L87 Difference]: Start difference. First operand 564 states and 1152 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 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 19:09:39,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:09:39,488 INFO L93 Difference]: Finished difference Result 755 states and 1501 transitions. [2023-12-02 19:09:39,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:09:39,489 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 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 19:09:39,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:09:39,494 INFO L225 Difference]: With dead ends: 755 [2023-12-02 19:09:39,495 INFO L226 Difference]: Without dead ends: 755 [2023-12-02 19:09:39,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:09:39,496 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 57 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:09:39,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 85 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:09:39,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2023-12-02 19:09:39,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 713. [2023-12-02 19:09:39,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 689 states have (on average 2.127721335268505) internal successors, (1466), 712 states have internal predecessors, (1466), 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 19:09:39,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1466 transitions. [2023-12-02 19:09:39,530 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1466 transitions. Word has length 14 [2023-12-02 19:09:39,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:09:39,531 INFO L495 AbstractCegarLoop]: Abstraction has 713 states and 1466 transitions. [2023-12-02 19:09:39,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 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 19:09:39,531 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1466 transitions. [2023-12-02 19:09:39,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 19:09:39,532 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:09:39,532 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:09:39,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 19:09:39,533 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-12-02 19:09:39,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:09:39,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1554089963, now seen corresponding path program 1 times [2023-12-02 19:09:39,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:09:39,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614207562] [2023-12-02 19:09:39,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:09:39,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:09:39,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:09:39,615 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 19:09:39,615 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:09:39,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614207562] [2023-12-02 19:09:39,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614207562] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:09:39,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:09:39,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:09:39,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834071629] [2023-12-02 19:09:39,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:09:39,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:09:39,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:09:39,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:09:39,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:09:39,618 INFO L87 Difference]: Start difference. First operand 713 states and 1466 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 19:09:39,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:09:39,695 INFO L93 Difference]: Finished difference Result 760 states and 1541 transitions. [2023-12-02 19:09:39,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 19:09:39,696 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2023-12-02 19:09:39,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:09:39,702 INFO L225 Difference]: With dead ends: 760 [2023-12-02 19:09:39,702 INFO L226 Difference]: Without dead ends: 760 [2023-12-02 19:09:39,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:09:39,703 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 30 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:09:39,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 51 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:09:39,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2023-12-02 19:09:39,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 728. [2023-12-02 19:09:39,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 704 states have (on average 2.116477272727273) internal successors, (1490), 727 states have internal predecessors, (1490), 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 19:09:39,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1490 transitions. [2023-12-02 19:09:39,729 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1490 transitions. Word has length 15 [2023-12-02 19:09:39,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:09:39,730 INFO L495 AbstractCegarLoop]: Abstraction has 728 states and 1490 transitions. [2023-12-02 19:09:39,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 19:09:39,730 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1490 transitions. [2023-12-02 19:09:39,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 19:09:39,731 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:09:39,731 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:09:39,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 19:09:39,731 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-12-02 19:09:39,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:09:39,732 INFO L85 PathProgramCache]: Analyzing trace with hash -327190234, now seen corresponding path program 1 times [2023-12-02 19:09:39,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:09:39,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488314985] [2023-12-02 19:09:39,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:09:39,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:09:39,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:09:39,790 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 19:09:39,790 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:09:39,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488314985] [2023-12-02 19:09:39,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488314985] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:09:39,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:09:39,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:09:39,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504923118] [2023-12-02 19:09:39,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:09:39,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:09:39,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:09:39,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:09:39,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:09:39,792 INFO L87 Difference]: Start difference. First operand 728 states and 1490 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 19:09:39,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:09:39,881 INFO L93 Difference]: Finished difference Result 740 states and 1505 transitions. [2023-12-02 19:09:39,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 19:09:39,882 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2023-12-02 19:09:39,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:09:39,886 INFO L225 Difference]: With dead ends: 740 [2023-12-02 19:09:39,886 INFO L226 Difference]: Without dead ends: 740 [2023-12-02 19:09:39,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:09:39,887 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 38 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:09:39,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 59 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:09:39,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2023-12-02 19:09:39,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 740. [2023-12-02 19:09:39,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 716 states have (on average 2.10195530726257) internal successors, (1505), 739 states have internal predecessors, (1505), 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 19:09:39,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1505 transitions. [2023-12-02 19:09:39,906 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1505 transitions. Word has length 15 [2023-12-02 19:09:39,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:09:39,907 INFO L495 AbstractCegarLoop]: Abstraction has 740 states and 1505 transitions. [2023-12-02 19:09:39,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 19:09:39,907 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1505 transitions. [2023-12-02 19:09:39,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 19:09:39,907 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:09:39,907 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:09:39,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 19:09:39,908 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread_function_mutexErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-12-02 19:09:39,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:09:39,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1087221214, now seen corresponding path program 1 times [2023-12-02 19:09:39,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:09:39,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045576253] [2023-12-02 19:09:39,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:09:39,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:09:39,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:09:39,976 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 19:09:39,976 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:09:39,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045576253] [2023-12-02 19:09:39,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045576253] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:09:39,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264232640] [2023-12-02 19:09:39,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:09:39,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:09:39,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:09:39,983 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:09:39,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 19:09:40,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:09:40,089 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 19:09:40,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:09:40,163 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 19:09:40,163 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:09:40,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264232640] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:09:40,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:09:40,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2023-12-02 19:09:40,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826917916] [2023-12-02 19:09:40,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:09:40,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:09:40,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:09:40,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:09:40,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-02 19:09:40,165 INFO L87 Difference]: Start difference. First operand 740 states and 1505 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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 19:09:40,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:09:40,228 INFO L93 Difference]: Finished difference Result 720 states and 1456 transitions. [2023-12-02 19:09:40,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:09:40,228 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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 19:09:40,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:09:40,234 INFO L225 Difference]: With dead ends: 720 [2023-12-02 19:09:40,234 INFO L226 Difference]: Without dead ends: 720 [2023-12-02 19:09:40,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 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 19:09:40,235 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 47 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:09:40,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 27 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:09:40,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2023-12-02 19:09:40,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 492. [2023-12-02 19:09:40,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 476 states have (on average 2.0105042016806722) internal successors, (957), 491 states have internal predecessors, (957), 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 19:09:40,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 957 transitions. [2023-12-02 19:09:40,254 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 957 transitions. Word has length 16 [2023-12-02 19:09:40,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:09:40,255 INFO L495 AbstractCegarLoop]: Abstraction has 492 states and 957 transitions. [2023-12-02 19:09:40,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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 19:09:40,255 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 957 transitions. [2023-12-02 19:09:40,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 19:09:40,256 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:09:40,256 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:09:40,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 19:09:40,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-12-02 19:09:40,457 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-12-02 19:09:40,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:09:40,457 INFO L85 PathProgramCache]: Analyzing trace with hash -655880424, now seen corresponding path program 1 times [2023-12-02 19:09:40,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:09:40,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251949716] [2023-12-02 19:09:40,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:09:40,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:09:40,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:09:40,525 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:09:40,525 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:09:40,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251949716] [2023-12-02 19:09:40,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251949716] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:09:40,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124300765] [2023-12-02 19:09:40,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:09:40,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:09:40,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:09:40,527 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:09:40,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 19:09:40,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:09:40,618 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 19:09:40,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:09:40,661 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:09:40,661 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:09:40,725 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:09:40,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124300765] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:09:40,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [64629740] [2023-12-02 19:09:40,731 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 19:09:40,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 19:09:40,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-12-02 19:09:40,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57336835] [2023-12-02 19:09:40,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 19:09:40,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 19:09:40,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:09:40,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 19:09:40,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-12-02 19:09:40,735 INFO L87 Difference]: Start difference. First operand 492 states and 957 transitions. Second operand has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 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 19:09:41,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:09:41,012 INFO L93 Difference]: Finished difference Result 1677 states and 3246 transitions. [2023-12-02 19:09:41,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 19:09:41,012 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 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 17 [2023-12-02 19:09:41,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:09:41,026 INFO L225 Difference]: With dead ends: 1677 [2023-12-02 19:09:41,026 INFO L226 Difference]: Without dead ends: 1677 [2023-12-02 19:09:41,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=109, Invalid=233, Unknown=0, NotChecked=0, Total=342 [2023-12-02 19:09:41,027 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 323 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:09:41,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 145 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:09:41,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1677 states. [2023-12-02 19:09:41,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1677 to 985. [2023-12-02 19:09:41,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 985 states, 969 states have (on average 1.9628482972136223) internal successors, (1902), 984 states have internal predecessors, (1902), 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 19:09:41,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1902 transitions. [2023-12-02 19:09:41,055 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1902 transitions. Word has length 17 [2023-12-02 19:09:41,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:09:41,056 INFO L495 AbstractCegarLoop]: Abstraction has 985 states and 1902 transitions. [2023-12-02 19:09:41,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 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 19:09:41,056 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1902 transitions. [2023-12-02 19:09:41,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 19:09:41,057 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:09:41,057 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-02 19:09:41,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 19:09:41,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 19:09:41,262 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread_function_mutexErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-12-02 19:09:41,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:09:41,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1527173023, now seen corresponding path program 1 times [2023-12-02 19:09:41,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:09:41,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624916724] [2023-12-02 19:09:41,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:09:41,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:09:41,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:09:41,330 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:09:41,330 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:09:41,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624916724] [2023-12-02 19:09:41,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624916724] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:09:41,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742347183] [2023-12-02 19:09:41,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:09:41,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:09:41,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:09:41,332 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:09:41,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 19:09:41,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:09:41,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 19:09:41,416 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:09:41,468 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:09:41,468 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:09:41,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742347183] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:09:41,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:09:41,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-12-02 19:09:41,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323309461] [2023-12-02 19:09:41,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:09:41,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:09:41,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:09:41,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:09:41,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-02 19:09:41,470 INFO L87 Difference]: Start difference. First operand 985 states and 1902 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 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 19:09:41,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:09:41,599 INFO L93 Difference]: Finished difference Result 950 states and 1818 transitions. [2023-12-02 19:09:41,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:09:41,600 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 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 19:09:41,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:09:41,605 INFO L225 Difference]: With dead ends: 950 [2023-12-02 19:09:41,605 INFO L226 Difference]: Without dead ends: 950 [2023-12-02 19:09:41,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 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 19:09:41,606 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 68 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:09:41,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 93 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:09:41,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2023-12-02 19:09:41,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 941. [2023-12-02 19:09:41,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 941 states, 929 states have (on average 1.9494079655543595) internal successors, (1811), 940 states have internal predecessors, (1811), 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 19:09:41,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 1811 transitions. [2023-12-02 19:09:41,627 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 1811 transitions. Word has length 20 [2023-12-02 19:09:41,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:09:41,627 INFO L495 AbstractCegarLoop]: Abstraction has 941 states and 1811 transitions. [2023-12-02 19:09:41,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 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 19:09:41,628 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 1811 transitions. [2023-12-02 19:09:41,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 19:09:41,628 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:09:41,629 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-02 19:09:41,633 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 19:09:41,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-02 19:09:41,829 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-12-02 19:09:41,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:09:41,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1381344985, now seen corresponding path program 1 times [2023-12-02 19:09:41,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:09:41,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001173179] [2023-12-02 19:09:41,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:09:41,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:09:41,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:09:41,903 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:09:41,903 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:09:41,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001173179] [2023-12-02 19:09:41,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001173179] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:09:41,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501685651] [2023-12-02 19:09:41,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:09:41,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:09:41,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:09:41,905 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:09:41,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 19:09:41,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:09:41,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 19:09:41,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:09:42,033 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:09:42,033 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:09:42,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501685651] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:09:42,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:09:42,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-12-02 19:09:42,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809960170] [2023-12-02 19:09:42,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:09:42,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:09:42,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:09:42,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:09:42,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-02 19:09:42,036 INFO L87 Difference]: Start difference. First operand 941 states and 1811 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 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 19:09:42,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:09:42,171 INFO L93 Difference]: Finished difference Result 906 states and 1728 transitions. [2023-12-02 19:09:42,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:09:42,172 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 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 19:09:42,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:09:42,177 INFO L225 Difference]: With dead ends: 906 [2023-12-02 19:09:42,177 INFO L226 Difference]: Without dead ends: 906 [2023-12-02 19:09:42,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 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 19:09:42,178 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 62 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:09:42,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 90 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:09:42,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2023-12-02 19:09:42,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 898. [2023-12-02 19:09:42,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 898 states, 889 states have (on average 1.937007874015748) internal successors, (1722), 897 states have internal predecessors, (1722), 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 19:09:42,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 1722 transitions. [2023-12-02 19:09:42,198 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 1722 transitions. Word has length 20 [2023-12-02 19:09:42,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:09:42,198 INFO L495 AbstractCegarLoop]: Abstraction has 898 states and 1722 transitions. [2023-12-02 19:09:42,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 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 19:09:42,198 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 1722 transitions. [2023-12-02 19:09:42,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-02 19:09:42,199 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:09:42,199 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-12-02 19:09:42,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 19:09:42,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-02 19:09:42,403 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread_function_mutexErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-12-02 19:09:42,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:09:42,403 INFO L85 PathProgramCache]: Analyzing trace with hash -97723141, now seen corresponding path program 1 times [2023-12-02 19:09:42,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:09:42,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310617831] [2023-12-02 19:09:42,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:09:42,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:09:42,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:09:42,441 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 19:09:42,442 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:09:42,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310617831] [2023-12-02 19:09:42,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310617831] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:09:42,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:09:42,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:09:42,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802692473] [2023-12-02 19:09:42,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:09:42,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:09:42,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:09:42,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:09:42,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:09:42,444 INFO L87 Difference]: Start difference. First operand 898 states and 1722 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 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 19:09:42,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:09:42,499 INFO L93 Difference]: Finished difference Result 855 states and 1633 transitions. [2023-12-02 19:09:42,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:09:42,500 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 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 19:09:42,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:09:42,505 INFO L225 Difference]: With dead ends: 855 [2023-12-02 19:09:42,505 INFO L226 Difference]: Without dead ends: 855 [2023-12-02 19:09:42,505 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 19:09:42,506 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 29 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:09:42,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 38 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:09:42,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2023-12-02 19:09:42,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 709. [2023-12-02 19:09:42,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 703 states have (on average 1.9317211948790896) internal successors, (1358), 708 states have internal predecessors, (1358), 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 19:09:42,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 1358 transitions. [2023-12-02 19:09:42,521 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 1358 transitions. Word has length 21 [2023-12-02 19:09:42,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:09:42,521 INFO L495 AbstractCegarLoop]: Abstraction has 709 states and 1358 transitions. [2023-12-02 19:09:42,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 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 19:09:42,522 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 1358 transitions. [2023-12-02 19:09:42,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-02 19:09:42,522 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:09:42,523 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-12-02 19:09:42,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-02 19:09:42,523 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-12-02 19:09:42,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:09:42,523 INFO L85 PathProgramCache]: Analyzing trace with hash -127978142, now seen corresponding path program 1 times [2023-12-02 19:09:42,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:09:42,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845915029] [2023-12-02 19:09:42,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:09:42,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:09:42,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:09:42,558 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 19:09:42,558 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:09:42,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845915029] [2023-12-02 19:09:42,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845915029] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:09:42,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:09:42,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:09:42,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370675762] [2023-12-02 19:09:42,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:09:42,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:09:42,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:09:42,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:09:42,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:09:42,560 INFO L87 Difference]: Start difference. First operand 709 states and 1358 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 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 19:09:42,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:09:42,617 INFO L93 Difference]: Finished difference Result 679 states and 1296 transitions. [2023-12-02 19:09:42,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:09:42,617 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 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 19:09:42,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:09:42,621 INFO L225 Difference]: With dead ends: 679 [2023-12-02 19:09:42,621 INFO L226 Difference]: Without dead ends: 679 [2023-12-02 19:09:42,621 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 19:09:42,622 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 27 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:09:42,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 28 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:09:42,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2023-12-02 19:09:42,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 497. [2023-12-02 19:09:42,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 493 states have (on average 1.9432048681541583) internal successors, (958), 496 states have internal predecessors, (958), 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 19:09:42,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 958 transitions. [2023-12-02 19:09:42,633 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 958 transitions. Word has length 21 [2023-12-02 19:09:42,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:09:42,633 INFO L495 AbstractCegarLoop]: Abstraction has 497 states and 958 transitions. [2023-12-02 19:09:42,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 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 19:09:42,634 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 958 transitions. [2023-12-02 19:09:42,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-02 19:09:42,635 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:09:42,635 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:09:42,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-02 19:09:42,636 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-12-02 19:09:42,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:09:42,636 INFO L85 PathProgramCache]: Analyzing trace with hash 790662161, now seen corresponding path program 1 times [2023-12-02 19:09:42,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:09:42,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643315384] [2023-12-02 19:09:42,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:09:42,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:09:42,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:09:42,801 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:09:42,801 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:09:42,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643315384] [2023-12-02 19:09:42,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643315384] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:09:42,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429226188] [2023-12-02 19:09:42,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:09:42,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:09:42,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:09:42,802 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:09:42,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 19:09:42,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:09:42,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 19:09:42,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:09:42,988 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:09:42,988 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:09:43,115 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:09:43,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429226188] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:09:43,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1795039377] [2023-12-02 19:09:43,118 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 19:09:43,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 19:09:43,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-12-02 19:09:43,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311889921] [2023-12-02 19:09:43,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 19:09:43,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-02 19:09:43,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:09:43,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-02 19:09:43,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2023-12-02 19:09:43,120 INFO L87 Difference]: Start difference. First operand 497 states and 958 transitions. Second operand has 18 states, 17 states have (on average 5.470588235294118) internal successors, (93), 17 states have internal predecessors, (93), 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 19:09:43,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:09:43,757 INFO L93 Difference]: Finished difference Result 2296 states and 4381 transitions. [2023-12-02 19:09:43,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-02 19:09:43,758 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 5.470588235294118) internal successors, (93), 17 states have internal predecessors, (93), 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 42 [2023-12-02 19:09:43,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:09:43,771 INFO L225 Difference]: With dead ends: 2296 [2023-12-02 19:09:43,771 INFO L226 Difference]: Without dead ends: 2296 [2023-12-02 19:09:43,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=412, Invalid=920, Unknown=0, NotChecked=0, Total=1332 [2023-12-02 19:09:43,772 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 644 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 19:09:43,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [644 Valid, 157 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 19:09:43,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2296 states. [2023-12-02 19:09:43,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2296 to 932. [2023-12-02 19:09:43,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 928 states have (on average 1.9859913793103448) internal successors, (1843), 931 states have internal predecessors, (1843), 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 19:09:43,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1843 transitions. [2023-12-02 19:09:43,811 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1843 transitions. Word has length 42 [2023-12-02 19:09:43,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:09:43,811 INFO L495 AbstractCegarLoop]: Abstraction has 932 states and 1843 transitions. [2023-12-02 19:09:43,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 5.470588235294118) internal successors, (93), 17 states have internal predecessors, (93), 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 19:09:43,811 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1843 transitions. [2023-12-02 19:09:43,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-02 19:09:43,813 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:09:43,813 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:09:43,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-02 19:09:44,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:09:44,026 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-12-02 19:09:44,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:09:44,026 INFO L85 PathProgramCache]: Analyzing trace with hash 221828734, now seen corresponding path program 1 times [2023-12-02 19:09:44,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:09:44,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050530] [2023-12-02 19:09:44,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:09:44,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:09:44,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:09:44,236 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:09:44,236 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:09:44,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050530] [2023-12-02 19:09:44,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050530] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:09:44,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617609207] [2023-12-02 19:09:44,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:09:44,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:09:44,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:09:44,238 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:09:44,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 19:09:44,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:09:44,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 19:09:44,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:09:44,430 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:09:44,430 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:09:44,577 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:09:44,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617609207] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:09:44,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [723915669] [2023-12-02 19:09:44,578 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 19:09:44,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 19:09:44,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-12-02 19:09:44,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241195948] [2023-12-02 19:09:44,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 19:09:44,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-02 19:09:44,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:09:44,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-02 19:09:44,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2023-12-02 19:09:44,581 INFO L87 Difference]: Start difference. First operand 932 states and 1843 transitions. Second operand has 20 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 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 19:09:45,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:09:45,484 INFO L93 Difference]: Finished difference Result 4572 states and 8784 transitions. [2023-12-02 19:09:45,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-02 19:09:45,485 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 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 42 [2023-12-02 19:09:45,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:09:45,504 INFO L225 Difference]: With dead ends: 4572 [2023-12-02 19:09:45,504 INFO L226 Difference]: Without dead ends: 4572 [2023-12-02 19:09:45,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 717 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=794, Invalid=1756, Unknown=0, NotChecked=0, Total=2550 [2023-12-02 19:09:45,505 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 941 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 19:09:45,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [941 Valid, 240 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 19:09:45,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4572 states. [2023-12-02 19:09:45,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4572 to 1665. [2023-12-02 19:09:45,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1665 states, 1661 states have (on average 2.062010836845274) internal successors, (3425), 1664 states have internal predecessors, (3425), 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 19:09:45,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1665 states to 1665 states and 3425 transitions. [2023-12-02 19:09:45,553 INFO L78 Accepts]: Start accepts. Automaton has 1665 states and 3425 transitions. Word has length 42 [2023-12-02 19:09:45,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:09:45,553 INFO L495 AbstractCegarLoop]: Abstraction has 1665 states and 3425 transitions. [2023-12-02 19:09:45,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 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 19:09:45,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1665 states and 3425 transitions. [2023-12-02 19:09:45,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-02 19:09:45,556 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:09:45,556 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:09:45,561 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 19:09:45,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-02 19:09:45,757 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-12-02 19:09:45,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:09:45,758 INFO L85 PathProgramCache]: Analyzing trace with hash 767201037, now seen corresponding path program 2 times [2023-12-02 19:09:45,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:09:45,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939884011] [2023-12-02 19:09:45,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:09:45,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:09:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:09:45,978 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:09:45,978 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:09:45,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939884011] [2023-12-02 19:09:45,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939884011] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:09:45,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106705578] [2023-12-02 19:09:45,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 19:09:45,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:09:45,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:09:45,980 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:09:45,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 19:09:46,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-02 19:09:46,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 19:09:46,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-02 19:09:46,109 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:09:46,217 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:09:46,217 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:09:46,472 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:09:46,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106705578] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:09:46,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1286563569] [2023-12-02 19:09:46,473 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 19:09:46,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 19:09:46,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 26 [2023-12-02 19:09:46,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667706948] [2023-12-02 19:09:46,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 19:09:46,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-02 19:09:46,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:09:46,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-02 19:09:46,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=543, Unknown=0, NotChecked=0, Total=756 [2023-12-02 19:09:46,476 INFO L87 Difference]: Start difference. First operand 1665 states and 3425 transitions. Second operand has 28 states, 27 states have (on average 4.777777777777778) internal successors, (129), 27 states have internal predecessors, (129), 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 19:09:48,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:09:48,325 INFO L93 Difference]: Finished difference Result 9570 states and 18604 transitions. [2023-12-02 19:09:48,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2023-12-02 19:09:48,325 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 4.777777777777778) internal successors, (129), 27 states have internal predecessors, (129), 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 60 [2023-12-02 19:09:48,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:09:48,356 INFO L225 Difference]: With dead ends: 9570 [2023-12-02 19:09:48,357 INFO L226 Difference]: Without dead ends: 9570 [2023-12-02 19:09:48,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2936 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2653, Invalid=5719, Unknown=0, NotChecked=0, Total=8372 [2023-12-02 19:09:48,360 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 2191 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2191 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 19:09:48,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2191 Valid, 350 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 19:09:48,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9570 states. [2023-12-02 19:09:48,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9570 to 1514. [2023-12-02 19:09:48,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1514 states, 1510 states have (on average 1.9635761589403973) internal successors, (2965), 1513 states have internal predecessors, (2965), 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 19:09:48,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 2965 transitions. [2023-12-02 19:09:48,484 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 2965 transitions. Word has length 60 [2023-12-02 19:09:48,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:09:48,485 INFO L495 AbstractCegarLoop]: Abstraction has 1514 states and 2965 transitions. [2023-12-02 19:09:48,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 4.777777777777778) internal successors, (129), 27 states have internal predecessors, (129), 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 19:09:48,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 2965 transitions. [2023-12-02 19:09:48,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-02 19:09:48,490 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:09:48,490 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1] [2023-12-02 19:09:48,496 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 19:09:48,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-02 19:09:48,691 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-12-02 19:09:48,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:09:48,692 INFO L85 PathProgramCache]: Analyzing trace with hash -2075049195, now seen corresponding path program 3 times [2023-12-02 19:09:48,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:09:48,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749335621] [2023-12-02 19:09:48,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:09:48,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:09:48,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:09:49,205 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 193 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:09:49,205 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:09:49,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749335621] [2023-12-02 19:09:49,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749335621] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:09:49,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146784366] [2023-12-02 19:09:49,206 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 19:09:49,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:09:49,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:09:49,207 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:09:49,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 19:09:49,363 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 19:09:49,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 19:09:49,365 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-02 19:09:49,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:09:49,510 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 193 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:09:49,510 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:09:49,898 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 193 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:09:49,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146784366] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:09:49,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1289016070] [2023-12-02 19:09:49,899 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 19:09:49,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 19:09:49,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2023-12-02 19:09:49,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537758391] [2023-12-02 19:09:49,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 19:09:49,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-02 19:09:49,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:09:49,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-02 19:09:49,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=404, Invalid=1002, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 19:09:49,902 INFO L87 Difference]: Start difference. First operand 1514 states and 2965 transitions. Second operand has 38 states, 37 states have (on average 5.4324324324324325) internal successors, (201), 37 states have internal predecessors, (201), 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 19:09:54,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:09:54,212 INFO L93 Difference]: Finished difference Result 19866 states and 38183 transitions. [2023-12-02 19:09:54,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2023-12-02 19:09:54,212 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 5.4324324324324325) internal successors, (201), 37 states have internal predecessors, (201), 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 96 [2023-12-02 19:09:54,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:09:54,248 INFO L225 Difference]: With dead ends: 19866 [2023-12-02 19:09:54,248 INFO L226 Difference]: Without dead ends: 19866 [2023-12-02 19:09:54,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12230 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=9082, Invalid=19310, Unknown=0, NotChecked=0, Total=28392 [2023-12-02 19:09:54,256 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 3912 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 1928 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3912 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 2037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 19:09:54,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3912 Valid, 785 Invalid, 2037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1928 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 19:09:54,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19866 states. [2023-12-02 19:09:54,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19866 to 2185. [2023-12-02 19:09:54,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2185 states, 2181 states have (on average 1.9789087574507107) internal successors, (4316), 2184 states have internal predecessors, (4316), 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 19:09:54,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2185 states to 2185 states and 4316 transitions. [2023-12-02 19:09:54,384 INFO L78 Accepts]: Start accepts. Automaton has 2185 states and 4316 transitions. Word has length 96 [2023-12-02 19:09:54,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:09:54,384 INFO L495 AbstractCegarLoop]: Abstraction has 2185 states and 4316 transitions. [2023-12-02 19:09:54,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 5.4324324324324325) internal successors, (201), 37 states have internal predecessors, (201), 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 19:09:54,384 INFO L276 IsEmpty]: Start isEmpty. Operand 2185 states and 4316 transitions. [2023-12-02 19:09:54,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-02 19:09:54,388 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:09:54,388 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2023-12-02 19:09:54,393 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-02 19:09:54,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-02 19:09:54,589 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-12-02 19:09:54,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:09:54,590 INFO L85 PathProgramCache]: Analyzing trace with hash -624136038, now seen corresponding path program 2 times [2023-12-02 19:09:54,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:09:54,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125707934] [2023-12-02 19:09:54,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:09:54,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:09:54,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:09:55,300 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:09:55,300 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:09:55,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125707934] [2023-12-02 19:09:55,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125707934] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:09:55,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071698166] [2023-12-02 19:09:55,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 19:09:55,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:09:55,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:09:55,302 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:09:55,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 19:09:55,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2023-12-02 19:09:55,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 19:09:55,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-02 19:09:55,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:09:55,661 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:09:55,661 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:09:56,134 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:09:56,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071698166] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:09:56,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1319499031] [2023-12-02 19:09:56,135 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 19:09:56,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 19:09:56,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 46 [2023-12-02 19:09:56,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909137072] [2023-12-02 19:09:56,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 19:09:56,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-02 19:09:56,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:09:56,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-02 19:09:56,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=615, Invalid=1641, Unknown=0, NotChecked=0, Total=2256 [2023-12-02 19:09:56,138 INFO L87 Difference]: Start difference. First operand 2185 states and 4316 transitions. Second operand has 48 states, 47 states have (on average 5.042553191489362) internal successors, (237), 47 states have internal predecessors, (237), 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 19:10:05,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:10:05,364 INFO L93 Difference]: Finished difference Result 46398 states and 89450 transitions. [2023-12-02 19:10:05,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 274 states. [2023-12-02 19:10:05,364 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.042553191489362) internal successors, (237), 47 states have internal predecessors, (237), 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 114 [2023-12-02 19:10:05,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:10:05,441 INFO L225 Difference]: With dead ends: 46398 [2023-12-02 19:10:05,441 INFO L226 Difference]: Without dead ends: 46398 [2023-12-02 19:10:05,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 275 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38325 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=24774, Invalid=51678, Unknown=0, NotChecked=0, Total=76452 [2023-12-02 19:10:05,449 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 7031 mSDsluCounter, 1046 mSDsCounter, 0 mSdLazyCounter, 2526 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7031 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 2677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 2526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-02 19:10:05,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7031 Valid, 1070 Invalid, 2677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 2526 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-02 19:10:05,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46398 states. [2023-12-02 19:10:05,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46398 to 4933. [2023-12-02 19:10:05,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4933 states, 4929 states have (on average 2.066950699939136) internal successors, (10188), 4932 states have internal predecessors, (10188), 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 19:10:05,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4933 states to 4933 states and 10188 transitions. [2023-12-02 19:10:05,762 INFO L78 Accepts]: Start accepts. Automaton has 4933 states and 10188 transitions. Word has length 114 [2023-12-02 19:10:05,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:10:05,762 INFO L495 AbstractCegarLoop]: Abstraction has 4933 states and 10188 transitions. [2023-12-02 19:10:05,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.042553191489362) internal successors, (237), 47 states have internal predecessors, (237), 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 19:10:05,763 INFO L276 IsEmpty]: Start isEmpty. Operand 4933 states and 10188 transitions. [2023-12-02 19:10:05,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-12-02 19:10:05,776 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:10:05,776 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 10, 10, 10, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1] [2023-12-02 19:10:05,782 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-02 19:10:05,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:10:05,976 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-12-02 19:10:05,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:10:05,977 INFO L85 PathProgramCache]: Analyzing trace with hash -269779589, now seen corresponding path program 4 times [2023-12-02 19:10:05,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:10:05,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34117547] [2023-12-02 19:10:05,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:10:05,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:10:06,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:10:06,976 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 0 proven. 689 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:10:06,977 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:10:06,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34117547] [2023-12-02 19:10:06,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34117547] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:10:06,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623880880] [2023-12-02 19:10:06,977 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 19:10:06,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:10:06,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:10:06,978 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:10:06,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 19:10:07,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:10:07,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-02 19:10:07,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:10:07,328 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 0 proven. 689 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:10:07,328 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:10:08,079 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 0 proven. 689 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:10:08,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623880880] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:10:08,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [34480802] [2023-12-02 19:10:08,080 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 19:10:08,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 19:10:08,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 56 [2023-12-02 19:10:08,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262286274] [2023-12-02 19:10:08,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 19:10:08,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-12-02 19:10:08,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:10:08,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-12-02 19:10:08,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=2316, Unknown=0, NotChecked=0, Total=3306 [2023-12-02 19:10:08,084 INFO L87 Difference]: Start difference. First operand 4933 states and 10188 transitions. Second operand has 58 states, 57 states have (on average 6.052631578947368) internal successors, (345), 57 states have internal predecessors, (345), 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 19:10:22,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:10:22,450 INFO L93 Difference]: Finished difference Result 98737 states and 194244 transitions. [2023-12-02 19:10:22,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 348 states. [2023-12-02 19:10:22,451 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 6.052631578947368) internal successors, (345), 57 states have internal predecessors, (345), 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 168 [2023-12-02 19:10:22,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:10:22,652 INFO L225 Difference]: With dead ends: 98737 [2023-12-02 19:10:22,652 INFO L226 Difference]: Without dead ends: 98737 [2023-12-02 19:10:22,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 654 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 349 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60266 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=39506, Invalid=83344, Unknown=0, NotChecked=0, Total=122850 [2023-12-02 19:10:22,727 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 7615 mSDsluCounter, 1368 mSDsCounter, 0 mSdLazyCounter, 3465 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7615 SdHoareTripleChecker+Valid, 1390 SdHoareTripleChecker+Invalid, 3605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 3465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-02 19:10:22,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7615 Valid, 1390 Invalid, 3605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 3465 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-02 19:10:22,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98737 states. [2023-12-02 19:10:23,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98737 to 11247. [2023-12-02 19:10:23,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11247 states, 11243 states have (on average 2.1303922440629726) internal successors, (23952), 11246 states have internal predecessors, (23952), 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 19:10:23,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11247 states to 11247 states and 23952 transitions. [2023-12-02 19:10:23,343 INFO L78 Accepts]: Start accepts. Automaton has 11247 states and 23952 transitions. Word has length 168 [2023-12-02 19:10:23,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:10:23,343 INFO L495 AbstractCegarLoop]: Abstraction has 11247 states and 23952 transitions. [2023-12-02 19:10:23,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 6.052631578947368) internal successors, (345), 57 states have internal predecessors, (345), 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 19:10:23,343 INFO L276 IsEmpty]: Start isEmpty. Operand 11247 states and 23952 transitions. [2023-12-02 19:10:23,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-12-02 19:10:23,361 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:10:23,361 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1] [2023-12-02 19:10:23,366 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-02 19:10:23,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:10:23,562 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-12-02 19:10:23,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:10:23,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1392340629, now seen corresponding path program 5 times [2023-12-02 19:10:23,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:10:23,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294636903] [2023-12-02 19:10:23,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:10:23,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:10:23,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:10:24,801 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 0 proven. 845 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:10:24,801 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:10:24,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294636903] [2023-12-02 19:10:24,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294636903] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:10:24,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057281636] [2023-12-02 19:10:24,802 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 19:10:24,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:10:24,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:10:24,803 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:10:24,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 19:10:25,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2023-12-02 19:10:25,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 19:10:25,089 INFO L262 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 47 conjunts are in the unsatisfiable core [2023-12-02 19:10:25,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:10:25,337 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 0 proven. 845 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:10:25,337 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:10:26,355 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 0 proven. 845 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:10:26,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057281636] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:10:26,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [708570552] [2023-12-02 19:10:26,356 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 19:10:26,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 19:10:26,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 68 [2023-12-02 19:10:26,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926102246] [2023-12-02 19:10:26,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 19:10:26,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2023-12-02 19:10:26,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:10:26,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2023-12-02 19:10:26,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1284, Invalid=3546, Unknown=0, NotChecked=0, Total=4830 [2023-12-02 19:10:26,359 INFO L87 Difference]: Start difference. First operand 11247 states and 23952 transitions. Second operand has 70 states, 69 states have (on average 5.0) internal successors, (345), 69 states have internal predecessors, (345), 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 19:11:07,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:11:07,331 INFO L93 Difference]: Finished difference Result 213225 states and 433313 transitions. [2023-12-02 19:11:07,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 574 states. [2023-12-02 19:11:07,331 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 69 states have (on average 5.0) internal successors, (345), 69 states have internal predecessors, (345), 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 168 [2023-12-02 19:11:07,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:11:07,851 INFO L225 Difference]: With dead ends: 213225 [2023-12-02 19:11:07,852 INFO L226 Difference]: Without dead ends: 213225 [2023-12-02 19:11:07,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 874 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 575 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192965 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=109139, Invalid=223213, Unknown=0, NotChecked=0, Total=332352 [2023-12-02 19:11:07,865 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 12624 mSDsluCounter, 2066 mSDsCounter, 0 mSdLazyCounter, 4880 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12624 SdHoareTripleChecker+Valid, 2097 SdHoareTripleChecker+Invalid, 5070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 4880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-02 19:11:07,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12624 Valid, 2097 Invalid, 5070 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [190 Valid, 4880 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-02 19:11:08,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213225 states. [2023-12-02 19:11:09,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213225 to 8361. [2023-12-02 19:11:09,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8361 states, 8357 states have (on average 2.0835227952614574) internal successors, (17412), 8360 states have internal predecessors, (17412), 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 19:11:09,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8361 states to 8361 states and 17412 transitions. [2023-12-02 19:11:09,100 INFO L78 Accepts]: Start accepts. Automaton has 8361 states and 17412 transitions. Word has length 168 [2023-12-02 19:11:09,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:11:09,100 INFO L495 AbstractCegarLoop]: Abstraction has 8361 states and 17412 transitions. [2023-12-02 19:11:09,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 69 states have (on average 5.0) internal successors, (345), 69 states have internal predecessors, (345), 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 19:11:09,101 INFO L276 IsEmpty]: Start isEmpty. Operand 8361 states and 17412 transitions. [2023-12-02 19:11:09,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2023-12-02 19:11:09,119 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:11:09,119 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 19, 19, 19, 9, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1] [2023-12-02 19:11:09,126 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-02 19:11:09,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-12-02 19:11:09,322 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-12-02 19:11:09,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:11:09,322 INFO L85 PathProgramCache]: Analyzing trace with hash -699158942, now seen corresponding path program 3 times [2023-12-02 19:11:09,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:11:09,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18175238] [2023-12-02 19:11:09,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:11:09,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:11:09,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:11:10,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1934 backedges. 0 proven. 1934 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:11:10,887 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:11:10,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18175238] [2023-12-02 19:11:10,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18175238] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:11:10,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387118975] [2023-12-02 19:11:10,888 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 19:11:10,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:11:10,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:11:10,889 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:11:10,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-02 19:11:11,146 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 19:11:11,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 19:11:11,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-02 19:11:11,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:11:11,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1934 backedges. 0 proven. 1934 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:11:11,414 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:11:12,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1934 backedges. 0 proven. 1934 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:11:12,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387118975] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:11:12,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1386134190] [2023-12-02 19:11:12,918 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 19:11:12,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 19:11:12,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 78 [2023-12-02 19:11:12,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677410228] [2023-12-02 19:11:12,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 19:11:12,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2023-12-02 19:11:12,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:11:12,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2023-12-02 19:11:12,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2039, Invalid=4281, Unknown=0, NotChecked=0, Total=6320 [2023-12-02 19:11:12,924 INFO L87 Difference]: Start difference. First operand 8361 states and 17412 transitions. Second operand has 80 states, 79 states have (on average 6.6455696202531644) internal successors, (525), 79 states have internal predecessors, (525), 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 19:12:01,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:12:01,478 INFO L93 Difference]: Finished difference Result 295867 states and 586124 transitions. [2023-12-02 19:12:01,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 622 states. [2023-12-02 19:12:01,478 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 79 states have (on average 6.6455696202531644) internal successors, (525), 79 states have internal predecessors, (525), 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 258 [2023-12-02 19:12:01,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:12:02,268 INFO L225 Difference]: With dead ends: 295867 [2023-12-02 19:12:02,268 INFO L226 Difference]: Without dead ends: 295867 [2023-12-02 19:12:02,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1097 GetRequests, 474 SyntacticMatches, 0 SemanticMatches, 623 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208012 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=125862, Invalid=264138, Unknown=0, NotChecked=0, Total=390000 [2023-12-02 19:12:02,282 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 11566 mSDsluCounter, 3016 mSDsCounter, 0 mSdLazyCounter, 7668 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11566 SdHoareTripleChecker+Valid, 3044 SdHoareTripleChecker+Invalid, 7820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 7668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-12-02 19:12:02,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11566 Valid, 3044 Invalid, 7820 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [152 Valid, 7668 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2023-12-02 19:12:02,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295867 states. [2023-12-02 19:12:04,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295867 to 41556. [2023-12-02 19:12:04,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41556 states, 41552 states have (on average 2.1778013092029265) internal successors, (90492), 41555 states have internal predecessors, (90492), 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 19:12:04,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41556 states to 41556 states and 90492 transitions. [2023-12-02 19:12:04,308 INFO L78 Accepts]: Start accepts. Automaton has 41556 states and 90492 transitions. Word has length 258 [2023-12-02 19:12:04,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:12:04,309 INFO L495 AbstractCegarLoop]: Abstraction has 41556 states and 90492 transitions. [2023-12-02 19:12:04,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 79 states have (on average 6.6455696202531644) internal successors, (525), 79 states have internal predecessors, (525), 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 19:12:04,309 INFO L276 IsEmpty]: Start isEmpty. Operand 41556 states and 90492 transitions. [2023-12-02 19:12:04,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2023-12-02 19:12:04,374 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:12:04,374 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 18, 18, 18, 18, 18, 10, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1] [2023-12-02 19:12:04,380 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-02 19:12:04,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:12:04,575 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-12-02 19:12:04,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:12:04,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1634306031, now seen corresponding path program 6 times [2023-12-02 19:12:04,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:12:04,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32981133] [2023-12-02 19:12:04,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:12:04,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:12:04,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:12:06,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1845 backedges. 0 proven. 1845 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:12:06,665 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:12:06,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32981133] [2023-12-02 19:12:06,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32981133] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:12:06,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895658595] [2023-12-02 19:12:06,665 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 19:12:06,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:12:06,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:12:06,666 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:12:06,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-02 19:12:06,942 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 19:12:06,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 19:12:06,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 864 conjuncts, 67 conjunts are in the unsatisfiable core [2023-12-02 19:12:06,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:12:07,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1845 backedges. 0 proven. 1845 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:12:07,216 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:12:08,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1845 backedges. 0 proven. 1845 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:12:08,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895658595] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:12:08,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [160637334] [2023-12-02 19:12:08,938 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 19:12:08,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 19:12:08,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 98 [2023-12-02 19:12:08,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400858523] [2023-12-02 19:12:08,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 19:12:08,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2023-12-02 19:12:08,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:12:08,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2023-12-02 19:12:08,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2649, Invalid=7251, Unknown=0, NotChecked=0, Total=9900 [2023-12-02 19:12:08,942 INFO L87 Difference]: Start difference. First operand 41556 states and 90492 transitions. Second operand has 100 states, 99 states have (on average 5.303030303030303) internal successors, (525), 99 states have internal predecessors, (525), 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 19:15:03,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:15:03,173 INFO L93 Difference]: Finished difference Result 630980 states and 1317393 transitions. [2023-12-02 19:15:03,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1057 states. [2023-12-02 19:15:03,174 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 99 states have (on average 5.303030303030303) internal successors, (525), 99 states have internal predecessors, (525), 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 258 [2023-12-02 19:15:03,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:15:04,908 INFO L225 Difference]: With dead ends: 630980 [2023-12-02 19:15:04,908 INFO L226 Difference]: Without dead ends: 630980 [2023-12-02 19:15:04,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1522 GetRequests, 464 SyntacticMatches, 0 SemanticMatches, 1058 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 693597 ImplicationChecksByTransitivity, 36.5s TimeCoverageRelationStatistics Valid=368173, Invalid=754367, Unknown=0, NotChecked=0, Total=1122540 [2023-12-02 19:15:04,959 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 22649 mSDsluCounter, 4489 mSDsCounter, 0 mSdLazyCounter, 10504 mSolverCounterSat, 346 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22649 SdHoareTripleChecker+Valid, 4535 SdHoareTripleChecker+Invalid, 10850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 346 IncrementalHoareTripleChecker+Valid, 10504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:15:04,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22649 Valid, 4535 Invalid, 10850 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [346 Valid, 10504 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2023-12-02 19:15:05,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630980 states. [2023-12-02 19:15:08,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630980 to 6054. [2023-12-02 19:15:08,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6054 states, 6050 states have (on average 1.9710743801652892) internal successors, (11925), 6053 states have internal predecessors, (11925), 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 19:15:08,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6054 states to 6054 states and 11925 transitions. [2023-12-02 19:15:08,937 INFO L78 Accepts]: Start accepts. Automaton has 6054 states and 11925 transitions. Word has length 258 [2023-12-02 19:15:08,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:15:08,937 INFO L495 AbstractCegarLoop]: Abstraction has 6054 states and 11925 transitions. [2023-12-02 19:15:08,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 99 states have (on average 5.303030303030303) internal successors, (525), 99 states have internal predecessors, (525), 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 19:15:08,937 INFO L276 IsEmpty]: Start isEmpty. Operand 6054 states and 11925 transitions. [2023-12-02 19:15:08,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2023-12-02 19:15:08,946 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:15:08,946 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 27, 27, 27, 26, 26, 26, 12, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1] [2023-12-02 19:15:08,953 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-02 19:15:09,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:15:09,146 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-12-02 19:15:09,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:15:09,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1085235727, now seen corresponding path program 7 times [2023-12-02 19:15:09,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:15:09,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447997893] [2023-12-02 19:15:09,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:15:09,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:15:09,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:15:11,358 INFO L134 CoverageAnalysis]: Checked inductivity of 3631 backedges. 0 proven. 3631 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:15:11,358 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:15:11,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447997893] [2023-12-02 19:15:11,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447997893] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:15:11,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777042963] [2023-12-02 19:15:11,358 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 19:15:11,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:15:11,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:15:11,359 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:15:11,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-02 19:15:11,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:15:11,615 INFO L262 TraceCheckSpWp]: Trace formula consists of 1103 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-02 19:15:11,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:15:12,974 INFO L134 CoverageAnalysis]: Checked inductivity of 3631 backedges. 3257 proven. 18 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2023-12-02 19:15:12,974 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:15:14,314 INFO L134 CoverageAnalysis]: Checked inductivity of 3631 backedges. 3257 proven. 18 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2023-12-02 19:15:14,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777042963] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:15:14,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [745511408] [2023-12-02 19:15:14,314 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 19:15:14,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 19:15:14,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 43, 43] total 94 [2023-12-02 19:15:14,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908198397] [2023-12-02 19:15:14,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 19:15:14,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2023-12-02 19:15:14,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:15:14,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2023-12-02 19:15:14,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1392, Invalid=7350, Unknown=0, NotChecked=0, Total=8742 [2023-12-02 19:15:14,318 INFO L87 Difference]: Start difference. First operand 6054 states and 11925 transitions. Second operand has 94 states, 94 states have (on average 6.085106382978723) internal successors, (572), 94 states have internal predecessors, (572), 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 19:20:50,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:20:50,139 INFO L93 Difference]: Finished difference Result 739036 states and 1479293 transitions. [2023-12-02 19:20:50,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3482 states. [2023-12-02 19:20:50,140 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 6.085106382978723) internal successors, (572), 94 states have internal predecessors, (572), 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 348 [2023-12-02 19:20:50,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:20:51,865 INFO L225 Difference]: With dead ends: 739036 [2023-12-02 19:20:51,865 INFO L226 Difference]: Without dead ends: 635771 [2023-12-02 19:20:52,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7660 GetRequests, 4070 SyntacticMatches, 40 SemanticMatches, 3550 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6520738 ImplicationChecksByTransitivity, 156.3s TimeCoverageRelationStatistics Valid=1572293, Invalid=11040859, Unknown=0, NotChecked=0, Total=12613152 [2023-12-02 19:20:52,575 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 26404 mSDsluCounter, 6445 mSDsCounter, 0 mSdLazyCounter, 30164 mSolverCounterSat, 370 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26404 SdHoareTripleChecker+Valid, 6561 SdHoareTripleChecker+Invalid, 30534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 30164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.8s IncrementalHoareTripleChecker+Time [2023-12-02 19:20:52,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26404 Valid, 6561 Invalid, 30534 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [370 Valid, 30164 Invalid, 0 Unknown, 0 Unchecked, 18.8s Time] [2023-12-02 19:20:53,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635771 states. [2023-12-02 19:20:56,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635771 to 58163. [2023-12-02 19:20:57,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58163 states, 58159 states have (on average 2.0081156828693754) internal successors, (116790), 58162 states have internal predecessors, (116790), 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 19:20:57,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58163 states to 58163 states and 116790 transitions. [2023-12-02 19:20:57,117 INFO L78 Accepts]: Start accepts. Automaton has 58163 states and 116790 transitions. Word has length 348 [2023-12-02 19:20:57,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:20:57,118 INFO L495 AbstractCegarLoop]: Abstraction has 58163 states and 116790 transitions. [2023-12-02 19:20:57,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 6.085106382978723) internal successors, (572), 94 states have internal predecessors, (572), 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 19:20:57,118 INFO L276 IsEmpty]: Start isEmpty. Operand 58163 states and 116790 transitions. [2023-12-02 19:20:57,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2023-12-02 19:20:57,188 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:20:57,188 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1] [2023-12-02 19:20:57,195 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-02 19:20:57,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:20:57,389 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-12-02 19:20:57,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:20:57,389 INFO L85 PathProgramCache]: Analyzing trace with hash -175925111, now seen corresponding path program 8 times [2023-12-02 19:20:57,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:20:57,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917397052] [2023-12-02 19:20:57,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:20:57,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:20:57,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:21:00,396 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 3120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:21:00,396 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:21:00,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917397052] [2023-12-02 19:21:00,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917397052] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:21:00,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18165330] [2023-12-02 19:21:00,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 19:21:00,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:21:00,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:21:00,397 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:21:00,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e818f0ee-a7e8-457a-ad12-2dfe0c2696cd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-02 19:21:01,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2023-12-02 19:21:01,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 19:21:01,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 1124 conjuncts, 77 conjunts are in the unsatisfiable core [2023-12-02 19:21:01,100 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:21:01,416 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 3120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:21:01,416 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:21:03,957 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 3120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:21:03,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18165330] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:21:03,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1361489265] [2023-12-02 19:21:03,957 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 19:21:03,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 19:21:03,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58, 58] total 118 [2023-12-02 19:21:03,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802260586] [2023-12-02 19:21:03,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 19:21:03,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 120 states [2023-12-02 19:21:03,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:21:03,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2023-12-02 19:21:03,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4059, Invalid=10221, Unknown=0, NotChecked=0, Total=14280 [2023-12-02 19:21:03,962 INFO L87 Difference]: Start difference. First operand 58163 states and 116790 transitions. Second operand has 120 states, 119 states have (on average 5.92436974789916) internal successors, (705), 119 states have internal predecessors, (705), 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)