./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 670814d0a16da58b0f26835e20c05a244e2f373856f13b9d4ff2a931783edf81 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:18:33,958 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:18:34,073 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 05:18:34,084 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:18:34,084 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:18:34,123 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:18:34,124 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:18:34,127 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:18:34,128 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:18:34,128 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:18:34,129 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:18:34,129 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:18:34,130 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:18:34,130 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:18:34,131 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:18:34,131 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:18:34,132 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:18:34,132 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:18:34,133 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:18:34,133 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:18:34,134 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:18:34,135 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:18:34,135 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:18:34,136 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:18:34,136 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:18:34,136 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:18:34,137 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:18:34,137 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:18:34,137 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:18:34,138 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:18:34,139 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:18:34,139 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:18:34,139 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:18:34,140 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:18:34,140 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:18:34,141 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:18:34,141 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:18:34,142 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:18:34,142 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:18:34,143 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:18:34,143 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:18:34,144 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:18:34,144 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:18:34,144 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:18:34,145 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:18:34,145 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:18:34,145 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:18:34,146 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_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 670814d0a16da58b0f26835e20c05a244e2f373856f13b9d4ff2a931783edf81 [2024-11-09 05:18:34,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:18:34,505 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:18:34,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:18:34,510 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:18:34,513 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:18:34,515 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c Unable to find full path for "g++" [2024-11-09 05:18:36,689 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:18:36,977 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:18:36,978 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c [2024-11-09 05:18:36,991 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/data/e6767c22c/9999446eabdf43c3b9fdcfbbc6bc5e23/FLAG8ada0b37f [2024-11-09 05:18:37,316 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/data/e6767c22c/9999446eabdf43c3b9fdcfbbc6bc5e23 [2024-11-09 05:18:37,320 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:18:37,322 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:18:37,323 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:18:37,323 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:18:37,330 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:18:37,331 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:18:37" (1/1) ... [2024-11-09 05:18:37,333 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e13ded4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:18:37, skipping insertion in model container [2024-11-09 05:18:37,333 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:18:37" (1/1) ... [2024-11-09 05:18:37,379 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:18:37,708 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c[2862,2875] [2024-11-09 05:18:37,724 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:18:37,740 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:18:37,769 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c[2862,2875] [2024-11-09 05:18:37,774 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:18:37,795 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:18:37,796 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:18:37 WrapperNode [2024-11-09 05:18:37,796 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:18:37,797 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:18:37,798 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:18:37,798 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:18:37,806 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:18:37" (1/1) ... [2024-11-09 05:18:37,820 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:18:37" (1/1) ... [2024-11-09 05:18:37,866 INFO L138 Inliner]: procedures = 25, calls = 42, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 218 [2024-11-09 05:18:37,867 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:18:37,868 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:18:37,868 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:18:37,868 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:18:37,882 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:18:37" (1/1) ... [2024-11-09 05:18:37,883 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:18:37" (1/1) ... [2024-11-09 05:18:37,890 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:18:37" (1/1) ... [2024-11-09 05:18:37,894 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:18:37" (1/1) ... [2024-11-09 05:18:37,912 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:18:37" (1/1) ... [2024-11-09 05:18:37,921 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:18:37" (1/1) ... [2024-11-09 05:18:37,927 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:18:37" (1/1) ... [2024-11-09 05:18:37,929 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:18:37" (1/1) ... [2024-11-09 05:18:37,936 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:18:37,941 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:18:37,941 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:18:37,941 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:18:37,942 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:18:37" (1/1) ... [2024-11-09 05:18:37,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:18:37,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:18:37,982 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:18:37,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:18:38,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:18:38,031 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 05:18:38,031 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 05:18:38,031 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 05:18:38,033 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 05:18:38,033 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-09 05:18:38,034 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-09 05:18:38,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:18:38,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 05:18:38,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-09 05:18:38,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-09 05:18:38,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 05:18:38,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:18:38,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:18:38,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 05:18:38,037 WARN L207 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 05:18:38,192 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:18:38,195 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:18:38,996 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 05:18:38,998 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:18:39,438 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:18:39,438 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 05:18:39,439 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:18:39 BoogieIcfgContainer [2024-11-09 05:18:39,439 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:18:39,441 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:18:39,441 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:18:39,445 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:18:39,445 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:18:37" (1/3) ... [2024-11-09 05:18:39,446 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b7e9599 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:18:39, skipping insertion in model container [2024-11-09 05:18:39,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:18:37" (2/3) ... [2024-11-09 05:18:39,447 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b7e9599 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:18:39, skipping insertion in model container [2024-11-09 05:18:39,447 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:18:39" (3/3) ... [2024-11-09 05:18:39,448 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-max.wvr.c [2024-11-09 05:18:39,469 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:18:39,470 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 05:18:39,470 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 05:18:39,537 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-09 05:18:39,572 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 54 places, 57 transitions, 135 flow [2024-11-09 05:18:39,734 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 874 states, 873 states have (on average 3.8510882016036656) internal successors, (3362), 873 states have internal predecessors, (3362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:18:39,767 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:18:39,775 INFO L333 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, 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;@1b442872, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:18:39,776 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-09 05:18:39,782 INFO L276 IsEmpty]: Start isEmpty. Operand has 874 states, 873 states have (on average 3.8510882016036656) internal successors, (3362), 873 states have internal predecessors, (3362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:18:39,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 05:18:39,810 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:18:39,811 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:18:39,812 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 05:18:39,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:18:39,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1853349456, now seen corresponding path program 1 times [2024-11-09 05:18:39,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:18:39,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843237185] [2024-11-09 05:18:39,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:18:39,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:18:40,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:18:40,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:18:40,444 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:18:40,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843237185] [2024-11-09 05:18:40,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843237185] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:18:40,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:18:40,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:18:40,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973136463] [2024-11-09 05:18:40,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:18:40,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:18:40,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:18:40,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:18:40,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:18:40,490 INFO L87 Difference]: Start difference. First operand has 874 states, 873 states have (on average 3.8510882016036656) internal successors, (3362), 873 states have internal predecessors, (3362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:18:40,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:18:40,721 INFO L93 Difference]: Finished difference Result 1747 states and 6723 transitions. [2024-11-09 05:18:40,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:18:40,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2024-11-09 05:18:40,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:18:40,766 INFO L225 Difference]: With dead ends: 1747 [2024-11-09 05:18:40,766 INFO L226 Difference]: Without dead ends: 876 [2024-11-09 05:18:40,778 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:18:40,784 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:18:40,785 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 40 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:18:40,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2024-11-09 05:18:40,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 876. [2024-11-09 05:18:40,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 875 states have (on average 3.8445714285714288) internal successors, (3364), 875 states have internal predecessors, (3364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:18:40,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 3364 transitions. [2024-11-09 05:18:40,998 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 3364 transitions. Word has length 27 [2024-11-09 05:18:40,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:18:41,002 INFO L471 AbstractCegarLoop]: Abstraction has 876 states and 3364 transitions. [2024-11-09 05:18:41,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:18:41,003 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 3364 transitions. [2024-11-09 05:18:41,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-09 05:18:41,008 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:18:41,009 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:18:41,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:18:41,009 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 05:18:41,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:18:41,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1936611607, now seen corresponding path program 1 times [2024-11-09 05:18:41,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:18:41,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410299247] [2024-11-09 05:18:41,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:18:41,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:18:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:18:41,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 05:18:41,274 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:18:41,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410299247] [2024-11-09 05:18:41,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410299247] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:18:41,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:18:41,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:18:41,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986703563] [2024-11-09 05:18:41,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:18:41,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:18:41,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:18:41,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:18:41,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:18:41,279 INFO L87 Difference]: Start difference. First operand 876 states and 3364 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:18:41,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:18:41,521 INFO L93 Difference]: Finished difference Result 1748 states and 6724 transitions. [2024-11-09 05:18:41,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:18:41,522 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2024-11-09 05:18:41,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:18:41,532 INFO L225 Difference]: With dead ends: 1748 [2024-11-09 05:18:41,533 INFO L226 Difference]: Without dead ends: 880 [2024-11-09 05:18:41,535 INFO L431 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 [2024-11-09 05:18:41,537 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 56 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:18:41,537 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 16 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:18:41,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2024-11-09 05:18:41,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 880. [2024-11-09 05:18:41,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 879 states have (on average 3.831626848691695) internal successors, (3368), 879 states have internal predecessors, (3368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:18:41,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 3368 transitions. [2024-11-09 05:18:41,664 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 3368 transitions. Word has length 29 [2024-11-09 05:18:41,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:18:41,665 INFO L471 AbstractCegarLoop]: Abstraction has 880 states and 3368 transitions. [2024-11-09 05:18:41,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:18:41,665 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 3368 transitions. [2024-11-09 05:18:41,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 05:18:41,672 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:18:41,673 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:18:41,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 05:18:41,674 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 05:18:41,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:18:41,676 INFO L85 PathProgramCache]: Analyzing trace with hash -121895435, now seen corresponding path program 1 times [2024-11-09 05:18:41,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:18:41,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524198172] [2024-11-09 05:18:41,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:18:41,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:18:41,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:18:41,968 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:18:41,968 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:18:41,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524198172] [2024-11-09 05:18:41,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524198172] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:18:41,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:18:41,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:18:41,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284917196] [2024-11-09 05:18:41,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:18:41,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:18:41,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:18:41,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:18:41,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:18:41,971 INFO L87 Difference]: Start difference. First operand 880 states and 3368 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:18:42,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:18:42,177 INFO L93 Difference]: Finished difference Result 1507 states and 5871 transitions. [2024-11-09 05:18:42,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:18:42,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2024-11-09 05:18:42,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:18:42,194 INFO L225 Difference]: With dead ends: 1507 [2024-11-09 05:18:42,195 INFO L226 Difference]: Without dead ends: 1348 [2024-11-09 05:18:42,196 INFO L431 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 [2024-11-09 05:18:42,198 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 28 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:18:42,202 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 41 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:18:42,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1348 states. [2024-11-09 05:18:42,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1348 to 1270. [2024-11-09 05:18:42,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1270 states, 1269 states have (on average 3.8699763593380614) internal successors, (4911), 1269 states have internal predecessors, (4911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:18:42,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 4911 transitions. [2024-11-09 05:18:42,357 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 4911 transitions. Word has length 33 [2024-11-09 05:18:42,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:18:42,359 INFO L471 AbstractCegarLoop]: Abstraction has 1270 states and 4911 transitions. [2024-11-09 05:18:42,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:18:42,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 4911 transitions. [2024-11-09 05:18:42,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-09 05:18:42,368 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:18:42,368 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:18:42,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 05:18:42,369 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 05:18:42,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:18:42,370 INFO L85 PathProgramCache]: Analyzing trace with hash -504663239, now seen corresponding path program 1 times [2024-11-09 05:18:42,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:18:42,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973713218] [2024-11-09 05:18:42,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:18:42,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:18:42,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:18:42,654 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:18:42,654 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:18:42,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973713218] [2024-11-09 05:18:42,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973713218] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:18:42,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964927643] [2024-11-09 05:18:42,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:18:42,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:18:42,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:18:42,659 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:18:42,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 05:18:42,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:18:42,812 INFO L255 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 05:18:42,818 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:18:43,029 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:18:43,029 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:18:43,193 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:18:43,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964927643] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:18:43,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [239786650] [2024-11-09 05:18:43,204 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:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$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:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) 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:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:236) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) 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) [2024-11-09 05:18:43,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:18:43,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-09 05:18:43,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198788595] [2024-11-09 05:18:43,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:18:43,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 05:18:43,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:18:43,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 05:18:43,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-11-09 05:18:43,210 INFO L87 Difference]: Start difference. First operand 1270 states and 4911 transitions. Second operand has 12 states, 12 states have (on average 4.5) internal successors, (54), 11 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:18:44,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:18:44,004 INFO L93 Difference]: Finished difference Result 2628 states and 10133 transitions. [2024-11-09 05:18:44,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 05:18:44,005 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 11 states have internal predecessors, (54), 0 states have call successors, (0), 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 40 [2024-11-09 05:18:44,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:18:44,018 INFO L225 Difference]: With dead ends: 2628 [2024-11-09 05:18:44,018 INFO L226 Difference]: Without dead ends: 1276 [2024-11-09 05:18:44,021 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2024-11-09 05:18:44,023 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 110 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 05:18:44,023 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 39 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 05:18:44,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2024-11-09 05:18:44,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 1273. [2024-11-09 05:18:44,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1273 states, 1272 states have (on average 3.8608490566037736) internal successors, (4911), 1272 states have internal predecessors, (4911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:18:44,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1273 states to 1273 states and 4911 transitions. [2024-11-09 05:18:44,171 INFO L78 Accepts]: Start accepts. Automaton has 1273 states and 4911 transitions. Word has length 40 [2024-11-09 05:18:44,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:18:44,171 INFO L471 AbstractCegarLoop]: Abstraction has 1273 states and 4911 transitions. [2024-11-09 05:18:44,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 11 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:18:44,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1273 states and 4911 transitions. [2024-11-09 05:18:44,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-09 05:18:44,178 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:18:44,178 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:18:44,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 05:18:44,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:18:44,380 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 05:18:44,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:18:44,380 INFO L85 PathProgramCache]: Analyzing trace with hash -408375020, now seen corresponding path program 2 times [2024-11-09 05:18:44,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:18:44,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364696425] [2024-11-09 05:18:44,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:18:44,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:18:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:18:44,666 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 05:18:44,667 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:18:44,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364696425] [2024-11-09 05:18:44,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364696425] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:18:44,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299474396] [2024-11-09 05:18:44,668 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:18:44,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:18:44,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:18:44,671 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:18:44,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 05:18:44,843 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 05:18:44,843 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:18:44,845 INFO L255 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 05:18:44,848 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:18:45,014 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 05:18:45,015 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:18:45,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299474396] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:18:45,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:18:45,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2024-11-09 05:18:45,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513108951] [2024-11-09 05:18:45,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:18:45,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:18:45,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:18:45,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:18:45,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-09 05:18:45,020 INFO L87 Difference]: Start difference. First operand 1273 states and 4911 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:18:45,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:18:45,572 INFO L93 Difference]: Finished difference Result 2689 states and 10249 transitions. [2024-11-09 05:18:45,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 05:18:45,574 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 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 46 [2024-11-09 05:18:45,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:18:45,607 INFO L225 Difference]: With dead ends: 2689 [2024-11-09 05:18:45,608 INFO L226 Difference]: Without dead ends: 2298 [2024-11-09 05:18:45,610 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-09 05:18:45,613 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 78 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:18:45,614 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 74 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:18:45,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2298 states. [2024-11-09 05:18:45,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2298 to 1315. [2024-11-09 05:18:45,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1315 states, 1314 states have (on average 3.84703196347032) internal successors, (5055), 1314 states have internal predecessors, (5055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:18:45,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1315 states to 1315 states and 5055 transitions. [2024-11-09 05:18:45,803 INFO L78 Accepts]: Start accepts. Automaton has 1315 states and 5055 transitions. Word has length 46 [2024-11-09 05:18:45,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:18:45,805 INFO L471 AbstractCegarLoop]: Abstraction has 1315 states and 5055 transitions. [2024-11-09 05:18:45,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:18:45,805 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states and 5055 transitions. [2024-11-09 05:18:45,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-09 05:18:45,810 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:18:45,811 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:18:45,831 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 05:18:46,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:18:46,015 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 05:18:46,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:18:46,016 INFO L85 PathProgramCache]: Analyzing trace with hash -907595436, now seen corresponding path program 3 times [2024-11-09 05:18:46,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:18:46,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738839031] [2024-11-09 05:18:46,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:18:46,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:18:46,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:18:46,301 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 05:18:46,302 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:18:46,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738839031] [2024-11-09 05:18:46,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738839031] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:18:46,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630506457] [2024-11-09 05:18:46,302 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 05:18:46,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:18:46,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:18:46,307 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:18:46,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 05:18:46,436 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 05:18:46,436 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:18:46,439 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 05:18:46,442 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:18:46,518 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 05:18:46,520 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:18:46,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630506457] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:18:46,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:18:46,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2024-11-09 05:18:46,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925032515] [2024-11-09 05:18:46,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:18:46,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:18:46,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:18:46,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:18:46,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-09 05:18:46,526 INFO L87 Difference]: Start difference. First operand 1315 states and 5055 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:18:47,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:18:47,046 INFO L93 Difference]: Finished difference Result 3393 states and 13284 transitions. [2024-11-09 05:18:47,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:18:47,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 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 46 [2024-11-09 05:18:47,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:18:47,093 INFO L225 Difference]: With dead ends: 3393 [2024-11-09 05:18:47,094 INFO L226 Difference]: Without dead ends: 2999 [2024-11-09 05:18:47,099 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-09 05:18:47,100 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 95 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:18:47,102 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 70 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:18:47,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2999 states. [2024-11-09 05:18:47,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2999 to 1786. [2024-11-09 05:18:47,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1786 states, 1785 states have (on average 3.9008403361344537) internal successors, (6963), 1785 states have internal predecessors, (6963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:18:47,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1786 states to 1786 states and 6963 transitions. [2024-11-09 05:18:47,296 INFO L78 Accepts]: Start accepts. Automaton has 1786 states and 6963 transitions. Word has length 46 [2024-11-09 05:18:47,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:18:47,299 INFO L471 AbstractCegarLoop]: Abstraction has 1786 states and 6963 transitions. [2024-11-09 05:18:47,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:18:47,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1786 states and 6963 transitions. [2024-11-09 05:18:47,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-09 05:18:47,307 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:18:47,307 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:18:47,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 05:18:47,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-09 05:18:47,508 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 05:18:47,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:18:47,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1767109420, now seen corresponding path program 4 times [2024-11-09 05:18:47,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:18:47,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639821572] [2024-11-09 05:18:47,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:18:47,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:18:47,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:18:47,704 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 05:18:47,704 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:18:47,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639821572] [2024-11-09 05:18:47,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639821572] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:18:47,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559916507] [2024-11-09 05:18:47,705 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 05:18:47,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:18:47,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:18:47,707 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:18:47,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 05:18:47,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:18:47,854 INFO L255 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 05:18:47,856 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:18:47,974 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 05:18:47,975 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:18:48,107 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 05:18:48,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559916507] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 05:18:48,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 05:18:48,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2024-11-09 05:18:48,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265737472] [2024-11-09 05:18:48,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:18:48,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:18:48,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:18:48,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:18:48,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-09 05:18:48,110 INFO L87 Difference]: Start difference. First operand 1786 states and 6963 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 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) [2024-11-09 05:18:48,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:18:48,523 INFO L93 Difference]: Finished difference Result 2916 states and 11159 transitions. [2024-11-09 05:18:48,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:18:48,524 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 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 46 [2024-11-09 05:18:48,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:18:48,548 INFO L225 Difference]: With dead ends: 2916 [2024-11-09 05:18:48,548 INFO L226 Difference]: Without dead ends: 2104 [2024-11-09 05:18:48,551 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2024-11-09 05:18:48,552 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 82 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:18:48,553 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 26 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:18:48,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2104 states. [2024-11-09 05:18:48,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2104 to 2104. [2024-11-09 05:18:48,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2104 states, 2103 states have (on average 3.736566809320019) internal successors, (7858), 2103 states have internal predecessors, (7858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:18:48,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2104 states to 2104 states and 7858 transitions. [2024-11-09 05:18:48,793 INFO L78 Accepts]: Start accepts. Automaton has 2104 states and 7858 transitions. Word has length 46 [2024-11-09 05:18:48,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:18:48,794 INFO L471 AbstractCegarLoop]: Abstraction has 2104 states and 7858 transitions. [2024-11-09 05:18:48,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 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) [2024-11-09 05:18:48,794 INFO L276 IsEmpty]: Start isEmpty. Operand 2104 states and 7858 transitions. [2024-11-09 05:18:48,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-09 05:18:48,805 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:18:48,805 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:18:48,828 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 05:18:49,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:18:49,006 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 05:18:49,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:18:49,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1903149195, now seen corresponding path program 1 times [2024-11-09 05:18:49,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:18:49,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098037953] [2024-11-09 05:18:49,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:18:49,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:18:49,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:18:49,241 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 05:18:49,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:18:49,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098037953] [2024-11-09 05:18:49,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098037953] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:18:49,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940441870] [2024-11-09 05:18:49,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:18:49,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:18:49,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:18:49,245 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:18:49,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 05:18:49,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:18:49,419 INFO L255 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 05:18:49,422 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:18:49,556 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 05:18:49,557 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:18:49,681 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 05:18:49,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940441870] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 05:18:49,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 05:18:49,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2024-11-09 05:18:49,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092514270] [2024-11-09 05:18:49,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:18:49,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:18:49,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:18:49,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:18:49,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-09 05:18:49,683 INFO L87 Difference]: Start difference. First operand 2104 states and 7858 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:18:50,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:18:50,050 INFO L93 Difference]: Finished difference Result 2718 states and 10038 transitions. [2024-11-09 05:18:50,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:18:50,052 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 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 48 [2024-11-09 05:18:50,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:18:50,087 INFO L225 Difference]: With dead ends: 2718 [2024-11-09 05:18:50,091 INFO L226 Difference]: Without dead ends: 2043 [2024-11-09 05:18:50,094 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2024-11-09 05:18:50,094 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 49 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:18:50,095 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 26 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:18:50,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2043 states. [2024-11-09 05:18:50,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2043 to 1706. [2024-11-09 05:18:50,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1706 states, 1705 states have (on average 3.567741935483871) internal successors, (6083), 1705 states have internal predecessors, (6083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:18:50,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1706 states to 1706 states and 6083 transitions. [2024-11-09 05:18:50,302 INFO L78 Accepts]: Start accepts. Automaton has 1706 states and 6083 transitions. Word has length 48 [2024-11-09 05:18:50,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:18:50,304 INFO L471 AbstractCegarLoop]: Abstraction has 1706 states and 6083 transitions. [2024-11-09 05:18:50,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:18:50,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1706 states and 6083 transitions. [2024-11-09 05:18:50,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-09 05:18:50,312 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:18:50,312 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:18:50,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 05:18:50,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-09 05:18:50,516 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 05:18:50,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:18:50,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1190279043, now seen corresponding path program 1 times [2024-11-09 05:18:50,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:18:50,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887666618] [2024-11-09 05:18:50,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:18:50,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:18:50,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:18:55,495 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 05:18:55,495 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:18:55,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887666618] [2024-11-09 05:18:55,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887666618] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:18:55,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147845857] [2024-11-09 05:18:55,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:18:55,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:18:55,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:18:55,498 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:18:55,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 05:18:55,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:18:55,674 INFO L255 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-09 05:18:55,685 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:18:55,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 05:18:55,796 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-09 05:18:55,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-11-09 05:18:55,879 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2024-11-09 05:18:55,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2024-11-09 05:18:56,180 INFO L349 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2024-11-09 05:18:56,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 55 [2024-11-09 05:18:57,429 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:18:57,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 222 treesize of output 252 [2024-11-09 05:18:58,645 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 05:18:58,646 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:19:10,902 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:19:10,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 114 treesize of output 114 [2024-11-09 05:19:11,671 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 05:19:11,673 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 05:19:11,684 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2024-11-09 05:19:11,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 72 treesize of output 1 [2024-11-09 05:19:11,689 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 05:19:11,691 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 05:19:11,704 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2024-11-09 05:19:11,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 1 [2024-11-09 05:19:11,709 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 05:19:11,710 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 05:19:11,721 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2024-11-09 05:19:11,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 1 [2024-11-09 05:19:11,726 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 05:19:11,727 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 05:19:11,737 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2024-11-09 05:19:11,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 1 [2024-11-09 05:19:12,198 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 05:19:12,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147845857] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:19:12,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1721735030] [2024-11-09 05:19:12,201 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:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$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:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) 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:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:236) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) 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$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-09 05:19:12,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:19:12,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11, 11] total 34 [2024-11-09 05:19:12,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889270947] [2024-11-09 05:19:12,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:19:12,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-09 05:19:12,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:19:12,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-09 05:19:12,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1014, Unknown=4, NotChecked=0, Total=1190 [2024-11-09 05:19:12,208 INFO L87 Difference]: Start difference. First operand 1706 states and 6083 transitions. Second operand has 35 states, 35 states have (on average 3.5714285714285716) internal successors, (125), 34 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:19:14,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:19:16,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:19:21,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:19:30,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:19:34,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:19:37,177 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse52 (select |c_#memory_int| c_~A~0.base)) (.cse3 (+ c_~A~0.offset 4)) (.cse53 (select |c_#memory_int| c_~B~0.base)) (.cse1 (+ 4 c_~B~0.offset))) (let ((.cse5 (* |c_thread2Thread1of1ForFork0_~i~1#1| 4)) (.cse16 (+ c_~maxa~0 c_~maxb~0 1)) (.cse4 (select |c_#memory_int| c_~C~0.base)) (.cse55 (select .cse53 .cse1)) (.cse54 (select .cse52 .cse3))) (let ((.cse7 (< c_~maxa~0 (+ .cse54 1))) (.cse10 (+ c_~maxa~0 1 .cse55)) (.cse12 (< .cse54 c_~maxa~0)) (.cse14 (+ .cse54 c_~maxb~0 1)) (.cse8 (< c_~maxb~0 (+ 1 .cse55))) (.cse15 (select .cse4 (+ c_~C~0.offset 4))) (.cse13 (+ .cse54 1 .cse55)) (.cse11 (< .cse55 c_~maxb~0)) (.cse19 (+ .cse54 .cse55)) (.cse9 (< c_~maxc~0 .cse16)) (.cse6 (+ (select .cse52 (+ c_~A~0.offset .cse5)) (select .cse53 (+ .cse5 c_~B~0.offset))))) (and (forall ((|v_thread2Thread1of1ForFork0_plus_#res#1_8| Int)) (or (forall ((~C~0.offset Int)) (let ((.cse0 (store |c_#memory_int| c_~C~0.base (store .cse4 (+ .cse5 ~C~0.offset) |v_thread2Thread1of1ForFork0_plus_#res#1_8|)))) (let ((.cse2 (select (select .cse0 c_~A~0.base) .cse3))) (or (< c_~maxb~0 (+ (select (select .cse0 c_~B~0.base) .cse1) 1)) (< c_~maxc~0 (+ .cse2 c_~maxb~0 1)) (< .cse2 c_~maxa~0))))) (< .cse6 |v_thread2Thread1of1ForFork0_plus_#res#1_8|))) (or .cse7 (and (or .cse8 .cse9) (or (< c_~maxc~0 .cse10) .cse11))) (or .cse12 (and (or (< c_~maxc~0 .cse13) .cse11) (or .cse8 (< c_~maxc~0 .cse14)))) (or .cse7 (and (or (< .cse15 .cse10) .cse11) (or (< .cse15 .cse16) .cse8))) (forall ((|v_thread2Thread1of1ForFork0_plus_#res#1_8| Int)) (or (forall ((~C~0.offset Int)) (let ((.cse18 (store |c_#memory_int| c_~C~0.base (store .cse4 (+ ~C~0.offset 4) |v_thread2Thread1of1ForFork0_plus_#res#1_8|)))) (let ((.cse17 (select (select .cse18 c_~A~0.base) .cse3))) (or (< .cse17 c_~maxa~0) (< c_~maxb~0 (+ (select (select .cse18 c_~B~0.base) .cse1) 1)) (< c_~maxc~0 (+ .cse17 c_~maxb~0 1)))))) (< .cse19 |v_thread2Thread1of1ForFork0_plus_#res#1_8|))) (forall ((|v_thread2Thread1of1ForFork0_plus_#res#1_8| Int)) (or (< .cse19 |v_thread2Thread1of1ForFork0_plus_#res#1_8|) (forall ((~C~0.offset Int)) (let ((.cse21 (store |c_#memory_int| c_~C~0.base (store .cse4 (+ ~C~0.offset 4) |v_thread2Thread1of1ForFork0_plus_#res#1_8|)))) (let ((.cse20 (select (select .cse21 c_~A~0.base) .cse3))) (or (< .cse20 c_~maxa~0) (< c_~maxb~0 (+ (select (select .cse21 c_~B~0.base) .cse1) 1)) (< |v_thread2Thread1of1ForFork0_plus_#res#1_8| (+ .cse20 c_~maxb~0 1)))))))) (forall ((|v_thread2Thread1of1ForFork0_plus_#res#1_8| Int)) (or (forall ((~C~0.offset Int)) (let ((.cse23 (store .cse4 (+ .cse5 ~C~0.offset) |v_thread2Thread1of1ForFork0_plus_#res#1_8|))) (let ((.cse22 (store |c_#memory_int| c_~C~0.base .cse23))) (or (< c_~maxb~0 (+ (select (select .cse22 c_~B~0.base) .cse1) 1)) (< c_~maxa~0 (+ (select (select .cse22 c_~A~0.base) .cse3) 1)) (< (select .cse23 (+ ~C~0.offset 4)) .cse16))))) (< .cse6 |v_thread2Thread1of1ForFork0_plus_#res#1_8|))) (forall ((|v_thread2Thread1of1ForFork0_plus_#res#1_8| Int)) (or (< .cse19 |v_thread2Thread1of1ForFork0_plus_#res#1_8|) (forall ((~C~0.offset Int)) (let ((.cse26 (store |c_#memory_int| c_~C~0.base (store .cse4 (+ ~C~0.offset 4) |v_thread2Thread1of1ForFork0_plus_#res#1_8|)))) (let ((.cse24 (select (select .cse26 c_~B~0.base) .cse1)) (.cse25 (select (select .cse26 c_~A~0.base) .cse3))) (or (< .cse24 c_~maxb~0) (< |v_thread2Thread1of1ForFork0_plus_#res#1_8| (+ .cse24 .cse25 1)) (< .cse25 c_~maxa~0))))))) (or (forall ((~C~0.offset Int) (|v_thread2Thread1of1ForFork0_plus_#res#1_8| Int)) (let ((.cse27 (store |c_#memory_int| c_~C~0.base (store .cse4 (+ ~C~0.offset 4) |v_thread2Thread1of1ForFork0_plus_#res#1_8|)))) (or (< c_~maxa~0 (+ (select (select .cse27 c_~A~0.base) .cse3) 1)) (< c_~maxb~0 (+ (select (select .cse27 c_~B~0.base) .cse1) 1)) (< .cse19 |v_thread2Thread1of1ForFork0_plus_#res#1_8|)))) .cse9) (or (forall ((~C~0.offset Int) (|v_thread2Thread1of1ForFork0_plus_#res#1_8| Int)) (let ((.cse28 (store |c_#memory_int| c_~C~0.base (store .cse4 (+ .cse5 ~C~0.offset) |v_thread2Thread1of1ForFork0_plus_#res#1_8|)))) (or (< c_~maxb~0 (+ (select (select .cse28 c_~B~0.base) .cse1) 1)) (< .cse6 |v_thread2Thread1of1ForFork0_plus_#res#1_8|) (< c_~maxa~0 (+ (select (select .cse28 c_~A~0.base) .cse3) 1))))) .cse9) (forall ((|v_thread2Thread1of1ForFork0_plus_#res#1_8| Int)) (or (forall ((~C~0.offset Int)) (let ((.cse30 (store |c_#memory_int| c_~C~0.base (store .cse4 (+ ~C~0.offset 4) |v_thread2Thread1of1ForFork0_plus_#res#1_8|)))) (let ((.cse29 (select (select .cse30 c_~B~0.base) .cse1))) (or (< .cse29 c_~maxb~0) (< |v_thread2Thread1of1ForFork0_plus_#res#1_8| (+ .cse29 c_~maxa~0 1)) (< c_~maxa~0 (+ (select (select .cse30 c_~A~0.base) .cse3) 1)))))) (< .cse19 |v_thread2Thread1of1ForFork0_plus_#res#1_8|))) (forall ((|v_thread2Thread1of1ForFork0_plus_#res#1_8| Int)) (or (forall ((~C~0.offset Int)) (let ((.cse32 (store |c_#memory_int| c_~C~0.base (store .cse4 (+ ~C~0.offset 4) |v_thread2Thread1of1ForFork0_plus_#res#1_8|)))) (let ((.cse31 (select (select .cse32 c_~B~0.base) .cse1))) (or (< .cse31 c_~maxb~0) (< c_~maxa~0 (+ (select (select .cse32 c_~A~0.base) .cse3) 1)) (< c_~maxc~0 (+ .cse31 c_~maxa~0 1)))))) (< .cse19 |v_thread2Thread1of1ForFork0_plus_#res#1_8|))) (forall ((|v_thread2Thread1of1ForFork0_plus_#res#1_8| Int)) (or (< |v_thread2Thread1of1ForFork0_plus_#res#1_8| .cse16) (forall ((~C~0.offset Int)) (let ((.cse33 (store |c_#memory_int| c_~C~0.base (store .cse4 (+ ~C~0.offset 4) |v_thread2Thread1of1ForFork0_plus_#res#1_8|)))) (or (< c_~maxa~0 (+ (select (select .cse33 c_~A~0.base) .cse3) 1)) (< c_~maxb~0 (+ (select (select .cse33 c_~B~0.base) .cse1) 1))))) (< .cse19 |v_thread2Thread1of1ForFork0_plus_#res#1_8|))) (or .cse12 (and (or (< .cse15 .cse14) .cse8) (or (< .cse15 .cse13) .cse11))) (forall ((|v_thread2Thread1of1ForFork0_plus_#res#1_8| Int)) (or (< .cse6 |v_thread2Thread1of1ForFork0_plus_#res#1_8|) (forall ((~C~0.offset Int)) (let ((.cse34 (store |c_#memory_int| c_~C~0.base (store .cse4 (+ .cse5 ~C~0.offset) |v_thread2Thread1of1ForFork0_plus_#res#1_8|)))) (let ((.cse35 (select (select .cse34 c_~B~0.base) .cse1))) (or (< c_~maxa~0 (+ (select (select .cse34 c_~A~0.base) .cse3) 1)) (< c_~maxc~0 (+ c_~maxa~0 .cse35 1)) (< .cse35 c_~maxb~0))))))) (forall ((|v_thread2Thread1of1ForFork0_plus_#res#1_8| Int)) (or (forall ((~C~0.offset Int)) (let ((.cse38 (store |c_#memory_int| c_~C~0.base (store .cse4 (+ .cse5 ~C~0.offset) |v_thread2Thread1of1ForFork0_plus_#res#1_8|)))) (let ((.cse36 (select (select .cse38 c_~A~0.base) .cse3)) (.cse37 (select (select .cse38 c_~B~0.base) .cse1))) (or (< .cse36 c_~maxa~0) (< c_~maxc~0 (+ .cse36 .cse37 1)) (< .cse37 c_~maxb~0))))) (< .cse6 |v_thread2Thread1of1ForFork0_plus_#res#1_8|))) (forall ((|v_thread2Thread1of1ForFork0_plus_#res#1_8| Int)) (or (< .cse6 |v_thread2Thread1of1ForFork0_plus_#res#1_8|) (forall ((~C~0.offset Int)) (let ((.cse39 (store .cse4 (+ .cse5 ~C~0.offset) |v_thread2Thread1of1ForFork0_plus_#res#1_8|))) (let ((.cse42 (store |c_#memory_int| c_~C~0.base .cse39))) (let ((.cse40 (select (select .cse42 c_~A~0.base) .cse3)) (.cse41 (select (select .cse42 c_~B~0.base) .cse1))) (or (< (select .cse39 (+ ~C~0.offset 4)) (+ .cse40 .cse41 1)) (< .cse40 c_~maxa~0) (< .cse41 c_~maxb~0)))))))) (forall ((|v_thread2Thread1of1ForFork0_plus_#res#1_8| Int)) (or (forall ((~C~0.offset Int)) (let ((.cse45 (store |c_#memory_int| c_~C~0.base (store .cse4 (+ ~C~0.offset 4) |v_thread2Thread1of1ForFork0_plus_#res#1_8|)))) (let ((.cse43 (select (select .cse45 c_~B~0.base) .cse1)) (.cse44 (select (select .cse45 c_~A~0.base) .cse3))) (or (< .cse43 c_~maxb~0) (< .cse44 c_~maxa~0) (< c_~maxc~0 (+ .cse43 .cse44 1)))))) (< .cse19 |v_thread2Thread1of1ForFork0_plus_#res#1_8|))) (forall ((|v_thread2Thread1of1ForFork0_plus_#res#1_8| Int)) (or (< .cse6 |v_thread2Thread1of1ForFork0_plus_#res#1_8|) (forall ((~C~0.offset Int)) (let ((.cse48 (store .cse4 (+ .cse5 ~C~0.offset) |v_thread2Thread1of1ForFork0_plus_#res#1_8|))) (let ((.cse46 (store |c_#memory_int| c_~C~0.base .cse48))) (let ((.cse47 (select (select .cse46 c_~A~0.base) .cse3))) (or (< c_~maxb~0 (+ (select (select .cse46 c_~B~0.base) .cse1) 1)) (< .cse47 c_~maxa~0) (< (select .cse48 (+ ~C~0.offset 4)) (+ .cse47 c_~maxb~0 1))))))))) .cse9 (forall ((|v_thread2Thread1of1ForFork0_plus_#res#1_8| Int)) (or (< .cse6 |v_thread2Thread1of1ForFork0_plus_#res#1_8|) (forall ((~C~0.offset Int)) (let ((.cse50 (store .cse4 (+ .cse5 ~C~0.offset) |v_thread2Thread1of1ForFork0_plus_#res#1_8|))) (let ((.cse49 (store |c_#memory_int| c_~C~0.base .cse50))) (let ((.cse51 (select (select .cse49 c_~B~0.base) .cse1))) (or (< c_~maxa~0 (+ (select (select .cse49 c_~A~0.base) .cse3) 1)) (< (select .cse50 (+ ~C~0.offset 4)) (+ c_~maxa~0 .cse51 1)) (< .cse51 c_~maxb~0)))))))))))) is different from false [2024-11-09 05:19:39,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:19:41,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:19:46,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:19:59,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:20:02,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:20:04,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:20:08,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:20:47,981 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (+ c_~A~0.offset 4)) (.cse1 (+ 4 c_~B~0.offset)) (.cse64 (select |c_#memory_int| c_~A~0.base)) (.cse63 (select |c_#memory_int| c_~B~0.base)) (.cse72 (* c_thread1Thread1of1ForFork2_~i~0 4)) (.cse4 (select |c_#memory_int| c_~C~0.base))) (let ((.cse5 (* |c_thread2Thread1of1ForFork0_~i~1#1| 4)) (.cse13 (select .cse4 (+ c_~C~0.offset (* c_thread3Thread1of1ForFork1_~i~2 4)))) (.cse19 (+ c_~maxa~0 c_~maxb~0 1)) (.cse69 (select .cse63 (+ .cse72 c_~B~0.offset))) (.cse68 (select .cse64 (+ c_~A~0.offset .cse72))) (.cse71 (select .cse63 .cse1)) (.cse70 (select .cse64 .cse3))) (let ((.cse8 (< c_~maxa~0 (+ .cse70 1))) (.cse11 (+ c_~maxa~0 1 .cse71)) (.cse39 (< c_~maxa~0 (+ .cse68 1))) (.cse38 (+ .cse69 c_~maxa~0 1)) (.cse14 (< .cse13 .cse19)) (.cse18 (select .cse4 (+ c_~C~0.offset 4))) (.cse15 (< .cse70 c_~maxa~0)) (.cse17 (+ .cse70 c_~maxb~0 1)) (.cse9 (< c_~maxb~0 (+ 1 .cse71))) (.cse16 (+ .cse70 1 .cse71)) (.cse12 (< .cse71 c_~maxb~0)) (.cse27 (+ .cse70 .cse71)) (.cse7 (select .cse64 c_~A~0.offset)) (.cse32 (select .cse63 c_~B~0.offset)) (.cse10 (< c_~maxc~0 .cse19)) (.cse22 (+ .cse68 .cse69 1)) (.cse23 (< .cse69 c_~maxb~0)) (.cse20 (+ .cse68 c_~maxb~0 1)) (.cse21 (< c_~maxb~0 (+ .cse69 1))) (.cse24 (< .cse68 c_~maxa~0)) (.cse6 (+ (select .cse64 (+ c_~A~0.offset .cse5)) (select .cse63 (+ .cse5 c_~B~0.offset))))) (and (forall ((|v_thread2Thread1of1ForFork0_plus_#res#1_8| Int)) (or (forall ((~C~0.offset Int)) (let ((.cse0 (store |c_#memory_int| c_~C~0.base (store .cse4 (+ .cse5 ~C~0.offset) |v_thread2Thread1of1ForFork0_plus_#res#1_8|)))) (let ((.cse2 (select (select .cse0 c_~A~0.base) .cse3))) (or (< c_~maxb~0 (+ (select (select .cse0 c_~B~0.base) .cse1) 1)) (< c_~maxc~0 (+ .cse2 c_~maxb~0 1)) (< .cse2 c_~maxa~0))))) (< .cse6 |v_thread2Thread1of1ForFork0_plus_#res#1_8|))) (= .cse7 c_~maxa~0) (or .cse8 (and (or .cse9 .cse10) (or (< c_~maxc~0 .cse11) .cse12))) (or .cse8 (and (or .cse12 (< .cse13 .cse11)) (or .cse14 .cse9))) (or .cse15 (and (or (< c_~maxc~0 .cse16) .cse12) (or .cse9 (< c_~maxc~0 .cse17)))) (or .cse8 (and (or (< .cse18 .cse11) .cse12) (or (< .cse18 .cse19) .cse9))) (or (and (or (< c_~maxc~0 .cse20) .cse21) (or (< c_~maxc~0 .cse22) .cse23)) .cse24) (forall ((|v_thread2Thread1of1ForFork0_plus_#res#1_8| Int)) (or (forall ((~C~0.offset Int)) (let ((.cse26 (store |c_#memory_int| c_~C~0.base (store .cse4 (+ ~C~0.offset 4) |v_thread2Thread1of1ForFork0_plus_#res#1_8|)))) (let ((.cse25 (select (select .cse26 c_~A~0.base) .cse3))) (or (< .cse25 c_~maxa~0) (< c_~maxb~0 (+ (select (select .cse26 c_~B~0.base) .cse1) 1)) (< c_~maxc~0 (+ .cse25 c_~maxb~0 1)))))) (< .cse27 |v_thread2Thread1of1ForFork0_plus_#res#1_8|))) (forall ((|v_thread2Thread1of1ForFork0_plus_#res#1_8| Int)) (or (< .cse27 |v_thread2Thread1of1ForFork0_plus_#res#1_8|) (forall ((~C~0.offset Int)) (let ((.cse29 (store |c_#memory_int| c_~C~0.base (store .cse4 (+ ~C~0.offset 4) |v_thread2Thread1of1ForFork0_plus_#res#1_8|)))) (let ((.cse28 (select (select .cse29 c_~A~0.base) .cse3))) (or (< .cse28 c_~maxa~0) (< c_~maxb~0 (+ (select (select .cse29 c_~B~0.base) .cse1) 1)) (< |v_thread2Thread1of1ForFork0_plus_#res#1_8| (+ .cse28 c_~maxb~0 1)))))))) (forall ((|v_thread2Thread1of1ForFork0_plus_#res#1_8| Int)) (or (forall ((~C~0.offset Int)) (let ((.cse31 (store .cse4 (+ .cse5 ~C~0.offset) |v_thread2Thread1of1ForFork0_plus_#res#1_8|))) (let ((.cse30 (store |c_#memory_int| c_~C~0.base .cse31))) (or (< c_~maxb~0 (+ (select (select .cse30 c_~B~0.base) .cse1) 1)) (< c_~maxa~0 (+ (select (select .cse30 c_~A~0.base) .cse3) 1)) (< (select .cse31 (+ ~C~0.offset 4)) .cse19))))) (< .cse6 |v_thread2Thread1of1ForFork0_plus_#res#1_8|))) (= .cse32 c_~maxb~0) (forall ((|v_thread2Thread1of1ForFork0_plus_#res#1_8| Int)) (or (< .cse27 |v_thread2Thread1of1ForFork0_plus_#res#1_8|) (forall ((~C~0.offset Int)) (let ((.cse35 (store |c_#memory_int| c_~C~0.base (store .cse4 (+ ~C~0.offset 4) |v_thread2Thread1of1ForFork0_plus_#res#1_8|)))) (let ((.cse33 (select (select .cse35 c_~B~0.base) .cse1)) (.cse34 (select (select .cse35 c_~A~0.base) .cse3))) (or (< .cse33 c_~maxb~0) (< |v_thread2Thread1of1ForFork0_plus_#res#1_8| (+ .cse33 .cse34 1)) (< .cse34 c_~maxa~0))))))) (or (forall ((~C~0.offset Int) (|v_thread2Thread1of1ForFork0_plus_#res#1_8| Int)) (let ((.cse36 (store |c_#memory_int| c_~C~0.base (store .cse4 (+ ~C~0.offset 4) |v_thread2Thread1of1ForFork0_plus_#res#1_8|)))) (or (< c_~maxa~0 (+ (select (select .cse36 c_~A~0.base) .cse3) 1)) (< c_~maxb~0 (+ (select (select .cse36 c_~B~0.base) .cse1) 1)) (< .cse27 |v_thread2Thread1of1ForFork0_plus_#res#1_8|)))) .cse10) (or (forall ((~C~0.offset Int) (|v_thread2Thread1of1ForFork0_plus_#res#1_8| Int)) (let ((.cse37 (store |c_#memory_int| c_~C~0.base (store .cse4 (+ .cse5 ~C~0.offset) |v_thread2Thread1of1ForFork0_plus_#res#1_8|)))) (or (< c_~maxb~0 (+ (select (select .cse37 c_~B~0.base) .cse1) 1)) (< .cse6 |v_thread2Thread1of1ForFork0_plus_#res#1_8|) (< c_~maxa~0 (+ (select (select .cse37 c_~A~0.base) .cse3) 1))))) .cse10) (or (and (or (< c_~maxc~0 .cse38) .cse23) (or .cse21 .cse10)) .cse39) (or .cse39 (and (or (< .cse13 .cse38) .cse23) (or .cse14 .cse21))) (= c_~B~0.offset 0) (forall ((|v_thread2Thread1of1ForFork0_plus_#res#1_8| Int)) (or (forall ((~C~0.offset Int)) (let ((.cse41 (store |c_#memory_int| c_~C~0.base (store .cse4 (+ ~C~0.offset 4) |v_thread2Thread1of1ForFork0_plus_#res#1_8|)))) (let ((.cse40 (select (select .cse41 c_~B~0.base) .cse1))) (or (< .cse40 c_~maxb~0) (< |v_thread2Thread1of1ForFork0_plus_#res#1_8| (+ .cse40 c_~maxa~0 1)) (< c_~maxa~0 (+ (select (select .cse41 c_~A~0.base) .cse3) 1)))))) (< .cse27 |v_thread2Thread1of1ForFork0_plus_#res#1_8|))) (forall ((|v_thread2Thread1of1ForFork0_plus_#res#1_8| Int)) (or (forall ((~C~0.offset Int)) (let ((.cse43 (store |c_#memory_int| c_~C~0.base (store .cse4 (+ ~C~0.offset 4) |v_thread2Thread1of1ForFork0_plus_#res#1_8|)))) (let ((.cse42 (select (select .cse43 c_~B~0.base) .cse1))) (or (< .cse42 c_~maxb~0) (< c_~maxa~0 (+ (select (select .cse43 c_~A~0.base) .cse3) 1)) (< c_~maxc~0 (+ .cse42 c_~maxa~0 1)))))) (< .cse27 |v_thread2Thread1of1ForFork0_plus_#res#1_8|))) (forall ((|v_thread2Thread1of1ForFork0_plus_#res#1_8| Int)) (or (< |v_thread2Thread1of1ForFork0_plus_#res#1_8| .cse19) (forall ((~C~0.offset Int)) (let ((.cse44 (store |c_#memory_int| c_~C~0.base (store .cse4 (+ ~C~0.offset 4) |v_thread2Thread1of1ForFork0_plus_#res#1_8|)))) (or (< c_~maxa~0 (+ (select (select .cse44 c_~A~0.base) .cse3) 1)) (< c_~maxb~0 (+ (select (select .cse44 c_~B~0.base) .cse1) 1))))) (< .cse27 |v_thread2Thread1of1ForFork0_plus_#res#1_8|))) (= c_~A~0.offset 0) (or .cse15 (and (or (< .cse18 .cse17) .cse9) (or (< .cse18 .cse16) .cse12))) (or .cse15 (and (or (< .cse13 .cse17) .cse9) (or (< .cse13 .cse16) .cse12))) (forall ((|v_thread2Thread1of1ForFork0_plus_#res#1_8| Int)) (or (< .cse6 |v_thread2Thread1of1ForFork0_plus_#res#1_8|) (forall ((~C~0.offset Int)) (let ((.cse45 (store |c_#memory_int| c_~C~0.base (store .cse4 (+ .cse5 ~C~0.offset) |v_thread2Thread1of1ForFork0_plus_#res#1_8|)))) (let ((.cse46 (select (select .cse45 c_~B~0.base) .cse1))) (or (< c_~maxa~0 (+ (select (select .cse45 c_~A~0.base) .cse3) 1)) (< c_~maxc~0 (+ c_~maxa~0 .cse46 1)) (< .cse46 c_~maxb~0))))))) (= c_thread1Thread1of1ForFork2_~i~0 1) (forall ((|v_thread2Thread1of1ForFork0_plus_#res#1_8| Int)) (or (forall ((~C~0.offset Int)) (let ((.cse49 (store |c_#memory_int| c_~C~0.base (store .cse4 (+ .cse5 ~C~0.offset) |v_thread2Thread1of1ForFork0_plus_#res#1_8|)))) (let ((.cse47 (select (select .cse49 c_~A~0.base) .cse3)) (.cse48 (select (select .cse49 c_~B~0.base) .cse1))) (or (< .cse47 c_~maxa~0) (< c_~maxc~0 (+ .cse47 .cse48 1)) (< .cse48 c_~maxb~0))))) (< .cse6 |v_thread2Thread1of1ForFork0_plus_#res#1_8|))) (forall ((|v_thread2Thread1of1ForFork0_plus_#res#1_8| Int)) (or (< .cse6 |v_thread2Thread1of1ForFork0_plus_#res#1_8|) (forall ((~C~0.offset Int)) (let ((.cse50 (store .cse4 (+ .cse5 ~C~0.offset) |v_thread2Thread1of1ForFork0_plus_#res#1_8|))) (let ((.cse53 (store |c_#memory_int| c_~C~0.base .cse50))) (let ((.cse51 (select (select .cse53 c_~A~0.base) .cse3)) (.cse52 (select (select .cse53 c_~B~0.base) .cse1))) (or (< (select .cse50 (+ ~C~0.offset 4)) (+ .cse51 .cse52 1)) (< .cse51 c_~maxa~0) (< .cse52 c_~maxb~0)))))))) (forall ((|v_thread2Thread1of1ForFork0_plus_#res#1_8| Int)) (or (forall ((~C~0.offset Int)) (let ((.cse56 (store |c_#memory_int| c_~C~0.base (store .cse4 (+ ~C~0.offset 4) |v_thread2Thread1of1ForFork0_plus_#res#1_8|)))) (let ((.cse54 (select (select .cse56 c_~B~0.base) .cse1)) (.cse55 (select (select .cse56 c_~A~0.base) .cse3))) (or (< .cse54 c_~maxb~0) (< .cse55 c_~maxa~0) (< c_~maxc~0 (+ .cse54 .cse55 1)))))) (< .cse27 |v_thread2Thread1of1ForFork0_plus_#res#1_8|))) (let ((.cse58 (+ .cse7 .cse32))) (or (and (exists ((~C~0.offset Int) (~C~0.base Int)) (let ((.cse57 (select (select |c_#memory_int| ~C~0.base) (+ ~C~0.offset 4)))) (and (not (= ~C~0.base c_~A~0.base)) (<= (+ .cse57 1) .cse58) (<= .cse57 .cse27) (not (= ~C~0.base c_~B~0.base))))) (= .cse58 c_~maxc~0)) (exists ((~C~0.base Int)) (and (not (= ~C~0.base c_~A~0.base)) (not (= ~C~0.base c_~B~0.base)) (exists ((~C~0.offset Int)) (let ((.cse59 (select (select |c_#memory_int| ~C~0.base) (+ ~C~0.offset 4)))) (and (= .cse59 c_~maxc~0) (<= .cse58 .cse59) (<= .cse59 .cse27)))))))) (forall ((|v_thread2Thread1of1ForFork0_plus_#res#1_8| Int)) (or (< .cse6 |v_thread2Thread1of1ForFork0_plus_#res#1_8|) (forall ((~C~0.offset Int)) (let ((.cse62 (store .cse4 (+ .cse5 ~C~0.offset) |v_thread2Thread1of1ForFork0_plus_#res#1_8|))) (let ((.cse60 (store |c_#memory_int| c_~C~0.base .cse62))) (let ((.cse61 (select (select .cse60 c_~A~0.base) .cse3))) (or (< c_~maxb~0 (+ (select (select .cse60 c_~B~0.base) .cse1) 1)) (< .cse61 c_~maxa~0) (< (select .cse62 (+ ~C~0.offset 4)) (+ .cse61 c_~maxb~0 1))))))))) (= c_thread3Thread1of1ForFork1_~i~2 1) (or (< c_~maxc~0 (+ (select .cse63 4) (select .cse64 4) 1)) .cse10) (or (and (or (< .cse13 .cse22) .cse23) (or (< .cse13 .cse20) .cse21)) .cse24) (forall ((|v_thread2Thread1of1ForFork0_plus_#res#1_8| Int)) (or (< .cse6 |v_thread2Thread1of1ForFork0_plus_#res#1_8|) (forall ((~C~0.offset Int)) (let ((.cse66 (store .cse4 (+ .cse5 ~C~0.offset) |v_thread2Thread1of1ForFork0_plus_#res#1_8|))) (let ((.cse65 (store |c_#memory_int| c_~C~0.base .cse66))) (let ((.cse67 (select (select .cse65 c_~B~0.base) .cse1))) (or (< c_~maxa~0 (+ (select (select .cse65 c_~A~0.base) .cse3) 1)) (< (select .cse66 (+ ~C~0.offset 4)) (+ c_~maxa~0 .cse67 1)) (< .cse67 c_~maxb~0)))))))))))) is different from false [2024-11-09 05:20:49,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:20:51,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:20:54,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:20:57,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:21:24,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:21:25,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:21:28,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:21:30,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:22:39,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:22:42,221 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse56 (select |c_#memory_int| c_~A~0.base)) (.cse3 (+ c_~A~0.offset 4)) (.cse1 (+ 4 c_~B~0.offset)) (.cse57 (select |c_#memory_int| c_~B~0.base)) (.cse60 (* c_thread1Thread1of1ForFork2_~i~0 4))) (let ((.cse5 (* |c_thread2Thread1of1ForFork0_~i~1#1| 4)) (.cse4 (select |c_#memory_int| c_~C~0.base)) (.cse16 (+ c_~maxa~0 c_~maxb~0 1)) (.cse19 (select .cse57 (+ .cse60 c_~B~0.offset))) (.cse59 (select .cse57 .cse1)) (.cse58 (select .cse56 .cse3))) (let ((.cse7 (< c_~maxa~0 (+ .cse58 1))) (.cse10 (+ c_~maxa~0 1 .cse59)) (.cse20 (< .cse19 c_~maxb~0)) (.cse18 (< c_~maxb~0 (+ .cse19 1))) (.cse9 (< c_~maxc~0 .cse16)) (.cse17 (select .cse56 (+ c_~A~0.offset .cse60))) (.cse12 (< .cse58 c_~maxa~0)) (.cse14 (+ .cse58 c_~maxb~0 1)) (.cse8 (< c_~maxb~0 (+ 1 .cse59))) (.cse15 (select .cse4 (+ c_~C~0.offset 4))) (.cse13 (+ .cse58 1 .cse59)) (.cse11 (< .cse59 c_~maxb~0)) (.cse23 (+ .cse58 .cse59)) (.cse6 (+ (select .cse56 (+ c_~A~0.offset .cse5)) (select .cse57 (+ .cse5 c_~B~0.offset))))) (and (forall ((|v_thread2Thread1of1ForFork0_plus_#res#1_8| Int)) (or (forall ((~C~0.offset Int)) (let ((.cse0 (store |c_#memory_int| c_~C~0.base (store .cse4 (+ .cse5 ~C~0.offset) |v_thread2Thread1of1ForFork0_plus_#res#1_8|)))) (let ((.cse2 (select (select .cse0 c_~A~0.base) .cse3))) (or (< c_~maxb~0 (+ (select (select .cse0 c_~B~0.base) .cse1) 1)) (< c_~maxc~0 (+ .cse2 c_~maxb~0 1)) (< .cse2 c_~maxa~0))))) (< .cse6 |v_thread2Thread1of1ForFork0_plus_#res#1_8|))) (or .cse7 (and (or .cse8 .cse9) (or (< c_~maxc~0 .cse10) .cse11))) (or .cse12 (and (or (< c_~maxc~0 .cse13) .cse11) (or .cse8 (< c_~maxc~0 .cse14)))) (or .cse7 (and (or (< .cse15 .cse10) .cse11) (or (< .cse15 .cse16) .cse8))) (or (and (or (< c_~maxc~0 (+ .cse17 c_~maxb~0 1)) .cse18) (or (< c_~maxc~0 (+ .cse17 .cse19 1)) .cse20)) (< .cse17 c_~maxa~0)) (forall ((|v_thread2Thread1of1ForFork0_plus_#res#1_8| Int)) (or (forall ((~C~0.offset Int)) (let ((.cse22 (store |c_#memory_int| c_~C~0.base (store .cse4 (+ ~C~0.offset 4) |v_thread2Thread1of1ForFork0_plus_#res#1_8|)))) (let ((.cse21 (select (select .cse22 c_~A~0.base) .cse3))) (or (< .cse21 c_~maxa~0) (< c_~maxb~0 (+ (select (select .cse22 c_~B~0.base) .cse1) 1)) (< c_~maxc~0 (+ .cse21 c_~maxb~0 1)))))) (< .cse23 |v_thread2Thread1of1ForFork0_plus_#res#1_8|))) (forall ((|v_thread2Thread1of1ForFork0_plus_#res#1_8| Int)) (or (< .cse23 |v_thread2Thread1of1ForFork0_plus_#res#1_8|) (forall ((~C~0.offset Int)) (let ((.cse25 (store |c_#memory_int| c_~C~0.base (store .cse4 (+ ~C~0.offset 4) |v_thread2Thread1of1ForFork0_plus_#res#1_8|)))) (let ((.cse24 (select (select .cse25 c_~A~0.base) .cse3))) (or (< .cse24 c_~maxa~0) (< c_~maxb~0 (+ (select (select .cse25 c_~B~0.base) .cse1) 1)) (< |v_thread2Thread1of1ForFork0_plus_#res#1_8| (+ .cse24 c_~maxb~0 1)))))))) (forall ((|v_thread2Thread1of1ForFork0_plus_#res#1_8| Int)) (or (forall ((~C~0.offset Int)) (let ((.cse27 (store .cse4 (+ .cse5 ~C~0.offset) |v_thread2Thread1of1ForFork0_plus_#res#1_8|))) (let ((.cse26 (store |c_#memory_int| c_~C~0.base .cse27))) (or (< c_~maxb~0 (+ (select (select .cse26 c_~B~0.base) .cse1) 1)) (< c_~maxa~0 (+ (select (select .cse26 c_~A~0.base) .cse3) 1)) (< (select .cse27 (+ ~C~0.offset 4)) .cse16))))) (< .cse6 |v_thread2Thread1of1ForFork0_plus_#res#1_8|))) (forall ((|v_thread2Thread1of1ForFork0_plus_#res#1_8| Int)) (or (< .cse23 |v_thread2Thread1of1ForFork0_plus_#res#1_8|) (forall ((~C~0.offset Int)) (let ((.cse30 (store |c_#memory_int| c_~C~0.base (store .cse4 (+ ~C~0.offset 4) |v_thread2Thread1of1ForFork0_plus_#res#1_8|)))) (let ((.cse28 (select (select .cse30 c_~B~0.base) .cse1)) (.cse29 (select (select .cse30 c_~A~0.base) .cse3))) (or (< .cse28 c_~maxb~0) (< |v_thread2Thread1of1ForFork0_plus_#res#1_8| (+ .cse28 .cse29 1)) (< .cse29 c_~maxa~0))))))) (or (forall ((~C~0.offset Int) (|v_thread2Thread1of1ForFork0_plus_#res#1_8| Int)) (let ((.cse31 (store |c_#memory_int| c_~C~0.base (store .cse4 (+ ~C~0.offset 4) |v_thread2Thread1of1ForFork0_plus_#res#1_8|)))) (or (< c_~maxa~0 (+ (select (select .cse31 c_~A~0.base) .cse3) 1)) (< c_~maxb~0 (+ (select (select .cse31 c_~B~0.base) .cse1) 1)) (< .cse23 |v_thread2Thread1of1ForFork0_plus_#res#1_8|)))) .cse9) (or (forall ((~C~0.offset Int) (|v_thread2Thread1of1ForFork0_plus_#res#1_8| Int)) (let ((.cse32 (store |c_#memory_int| c_~C~0.base (store .cse4 (+ .cse5 ~C~0.offset) |v_thread2Thread1of1ForFork0_plus_#res#1_8|)))) (or (< c_~maxb~0 (+ (select (select .cse32 c_~B~0.base) .cse1) 1)) (< .cse6 |v_thread2Thread1of1ForFork0_plus_#res#1_8|) (< c_~maxa~0 (+ (select (select .cse32 c_~A~0.base) .cse3) 1))))) .cse9) (or (and (or (< c_~maxc~0 (+ .cse19 c_~maxa~0 1)) .cse20) (or .cse18 .cse9)) (< c_~maxa~0 (+ .cse17 1))) (forall ((|v_thread2Thread1of1ForFork0_plus_#res#1_8| Int)) (or (forall ((~C~0.offset Int)) (let ((.cse34 (store |c_#memory_int| c_~C~0.base (store .cse4 (+ ~C~0.offset 4) |v_thread2Thread1of1ForFork0_plus_#res#1_8|)))) (let ((.cse33 (select (select .cse34 c_~B~0.base) .cse1))) (or (< .cse33 c_~maxb~0) (< |v_thread2Thread1of1ForFork0_plus_#res#1_8| (+ .cse33 c_~maxa~0 1)) (< c_~maxa~0 (+ (select (select .cse34 c_~A~0.base) .cse3) 1)))))) (< .cse23 |v_thread2Thread1of1ForFork0_plus_#res#1_8|))) (forall ((|v_thread2Thread1of1ForFork0_plus_#res#1_8| Int)) (or (forall ((~C~0.offset Int)) (let ((.cse36 (store |c_#memory_int| c_~C~0.base (store .cse4 (+ ~C~0.offset 4) |v_thread2Thread1of1ForFork0_plus_#res#1_8|)))) (let ((.cse35 (select (select .cse36 c_~B~0.base) .cse1))) (or (< .cse35 c_~maxb~0) (< c_~maxa~0 (+ (select (select .cse36 c_~A~0.base) .cse3) 1)) (< c_~maxc~0 (+ .cse35 c_~maxa~0 1)))))) (< .cse23 |v_thread2Thread1of1ForFork0_plus_#res#1_8|))) (forall ((|v_thread2Thread1of1ForFork0_plus_#res#1_8| Int)) (or (< |v_thread2Thread1of1ForFork0_plus_#res#1_8| .cse16) (forall ((~C~0.offset Int)) (let ((.cse37 (store |c_#memory_int| c_~C~0.base (store .cse4 (+ ~C~0.offset 4) |v_thread2Thread1of1ForFork0_plus_#res#1_8|)))) (or (< c_~maxa~0 (+ (select (select .cse37 c_~A~0.base) .cse3) 1)) (< c_~maxb~0 (+ (select (select .cse37 c_~B~0.base) .cse1) 1))))) (< .cse23 |v_thread2Thread1of1ForFork0_plus_#res#1_8|))) (or .cse12 (and (or (< .cse15 .cse14) .cse8) (or (< .cse15 .cse13) .cse11))) (forall ((|v_thread2Thread1of1ForFork0_plus_#res#1_8| Int)) (or (< .cse6 |v_thread2Thread1of1ForFork0_plus_#res#1_8|) (forall ((~C~0.offset Int)) (let ((.cse38 (store |c_#memory_int| c_~C~0.base (store .cse4 (+ .cse5 ~C~0.offset) |v_thread2Thread1of1ForFork0_plus_#res#1_8|)))) (let ((.cse39 (select (select .cse38 c_~B~0.base) .cse1))) (or (< c_~maxa~0 (+ (select (select .cse38 c_~A~0.base) .cse3) 1)) (< c_~maxc~0 (+ c_~maxa~0 .cse39 1)) (< .cse39 c_~maxb~0))))))) (forall ((|v_thread2Thread1of1ForFork0_plus_#res#1_8| Int)) (or (forall ((~C~0.offset Int)) (let ((.cse42 (store |c_#memory_int| c_~C~0.base (store .cse4 (+ .cse5 ~C~0.offset) |v_thread2Thread1of1ForFork0_plus_#res#1_8|)))) (let ((.cse40 (select (select .cse42 c_~A~0.base) .cse3)) (.cse41 (select (select .cse42 c_~B~0.base) .cse1))) (or (< .cse40 c_~maxa~0) (< c_~maxc~0 (+ .cse40 .cse41 1)) (< .cse41 c_~maxb~0))))) (< .cse6 |v_thread2Thread1of1ForFork0_plus_#res#1_8|))) (forall ((|v_thread2Thread1of1ForFork0_plus_#res#1_8| Int)) (or (< .cse6 |v_thread2Thread1of1ForFork0_plus_#res#1_8|) (forall ((~C~0.offset Int)) (let ((.cse43 (store .cse4 (+ .cse5 ~C~0.offset) |v_thread2Thread1of1ForFork0_plus_#res#1_8|))) (let ((.cse46 (store |c_#memory_int| c_~C~0.base .cse43))) (let ((.cse44 (select (select .cse46 c_~A~0.base) .cse3)) (.cse45 (select (select .cse46 c_~B~0.base) .cse1))) (or (< (select .cse43 (+ ~C~0.offset 4)) (+ .cse44 .cse45 1)) (< .cse44 c_~maxa~0) (< .cse45 c_~maxb~0)))))))) (forall ((|v_thread2Thread1of1ForFork0_plus_#res#1_8| Int)) (or (forall ((~C~0.offset Int)) (let ((.cse49 (store |c_#memory_int| c_~C~0.base (store .cse4 (+ ~C~0.offset 4) |v_thread2Thread1of1ForFork0_plus_#res#1_8|)))) (let ((.cse47 (select (select .cse49 c_~B~0.base) .cse1)) (.cse48 (select (select .cse49 c_~A~0.base) .cse3))) (or (< .cse47 c_~maxb~0) (< .cse48 c_~maxa~0) (< c_~maxc~0 (+ .cse47 .cse48 1)))))) (< .cse23 |v_thread2Thread1of1ForFork0_plus_#res#1_8|))) (forall ((|v_thread2Thread1of1ForFork0_plus_#res#1_8| Int)) (or (< .cse6 |v_thread2Thread1of1ForFork0_plus_#res#1_8|) (forall ((~C~0.offset Int)) (let ((.cse52 (store .cse4 (+ .cse5 ~C~0.offset) |v_thread2Thread1of1ForFork0_plus_#res#1_8|))) (let ((.cse50 (store |c_#memory_int| c_~C~0.base .cse52))) (let ((.cse51 (select (select .cse50 c_~A~0.base) .cse3))) (or (< c_~maxb~0 (+ (select (select .cse50 c_~B~0.base) .cse1) 1)) (< .cse51 c_~maxa~0) (< (select .cse52 (+ ~C~0.offset 4)) (+ .cse51 c_~maxb~0 1))))))))) (forall ((|v_thread2Thread1of1ForFork0_plus_#res#1_8| Int)) (or (< .cse6 |v_thread2Thread1of1ForFork0_plus_#res#1_8|) (forall ((~C~0.offset Int)) (let ((.cse54 (store .cse4 (+ .cse5 ~C~0.offset) |v_thread2Thread1of1ForFork0_plus_#res#1_8|))) (let ((.cse53 (store |c_#memory_int| c_~C~0.base .cse54))) (let ((.cse55 (select (select .cse53 c_~B~0.base) .cse1))) (or (< c_~maxa~0 (+ (select (select .cse53 c_~A~0.base) .cse3) 1)) (< (select .cse54 (+ ~C~0.offset 4)) (+ c_~maxa~0 .cse55 1)) (< .cse55 c_~maxb~0)))))))))))) is different from false [2024-11-09 05:22:44,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:22:47,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:22:48,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:22:51,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:22:53,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:22:55,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-09 05:22:58,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-09 05:23:00,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-09 05:23:06,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-09 05:23:09,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-09 05:23:19,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:23:21,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:23:29,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:23:32,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-09 05:23:34,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:23:40,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:23:41,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:23:43,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:23:45,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:23:47,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:23:49,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:23:51,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:23:54,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-09 05:23:56,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-09 05:23:58,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-09 05:24:00,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-09 05:24:03,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:24:09,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:24:11,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:24:19,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:24:22,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-09 05:24:26,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:24:28,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:24:30,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-09 05:24:33,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:24:33,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:24:33,740 INFO L93 Difference]: Finished difference Result 10527 states and 38169 transitions. [2024-11-09 05:24:33,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-11-09 05:24:33,743 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.5714285714285716) internal successors, (125), 34 states have internal predecessors, (125), 0 states have call successors, (0), 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 52 [2024-11-09 05:24:33,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:24:33,803 INFO L225 Difference]: With dead ends: 10527 [2024-11-09 05:24:33,804 INFO L226 Difference]: Without dead ends: 10001 [2024-11-09 05:24:33,810 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1964 ImplicationChecksByTransitivity, 187.3s TimeCoverageRelationStatistics Valid=939, Invalid=5490, Unknown=63, NotChecked=480, Total=6972 [2024-11-09 05:24:33,811 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 744 mSDsluCounter, 1444 mSDsCounter, 0 mSdLazyCounter, 3066 mSolverCounterSat, 88 mSolverCounterUnsat, 46 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 138.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 1531 SdHoareTripleChecker+Invalid, 4403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3066 IncrementalHoareTripleChecker+Invalid, 46 IncrementalHoareTripleChecker+Unknown, 1203 IncrementalHoareTripleChecker+Unchecked, 140.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:24:33,811 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [744 Valid, 1531 Invalid, 4403 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [88 Valid, 3066 Invalid, 46 Unknown, 1203 Unchecked, 140.5s Time] [2024-11-09 05:24:33,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10001 states. [2024-11-09 05:24:35,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10001 to 2641. [2024-11-09 05:24:35,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2641 states, 2640 states have (on average 3.665151515151515) internal successors, (9676), 2640 states have internal predecessors, (9676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:24:35,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2641 states to 2641 states and 9676 transitions. [2024-11-09 05:24:35,489 INFO L78 Accepts]: Start accepts. Automaton has 2641 states and 9676 transitions. Word has length 52 [2024-11-09 05:24:35,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:24:35,490 INFO L471 AbstractCegarLoop]: Abstraction has 2641 states and 9676 transitions. [2024-11-09 05:24:35,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.5714285714285716) internal successors, (125), 34 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:24:35,491 INFO L276 IsEmpty]: Start isEmpty. Operand 2641 states and 9676 transitions. [2024-11-09 05:24:35,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-09 05:24:35,499 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:24:35,499 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:24:35,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 05:24:35,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-09 05:24:35,701 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 05:24:35,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:24:35,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1773938665, now seen corresponding path program 2 times [2024-11-09 05:24:35,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:24:35,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623454647] [2024-11-09 05:24:35,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:24:35,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:24:35,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:24:40,362 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 05:24:40,362 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:24:40,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623454647] [2024-11-09 05:24:40,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623454647] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:24:40,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343619860] [2024-11-09 05:24:40,363 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:24:40,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:24:40,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:24:40,364 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:24:40,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 05:24:40,504 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 05:24:40,504 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:24:40,506 INFO L255 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-09 05:24:40,509 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:24:40,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 05:24:40,635 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-09 05:24:40,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-11-09 05:24:40,853 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2024-11-09 05:24:40,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2024-11-09 05:24:41,671 INFO L349 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2024-11-09 05:24:41,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 60 treesize of output 49 [2024-11-09 05:24:45,304 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:24:45,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 17 select indices, 17 select index equivalence classes, 1 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 136 case distinctions, treesize of input 326 treesize of output 666 [2024-11-09 05:29:12,834 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-09 05:29:12,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2024-11-09 05:29:12,836 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2024-11-09 05:29:12,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1973604705] [2024-11-09 05:29:12,837 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$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) 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:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) 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:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:236) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) 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) [2024-11-09 05:29:12,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:29:12,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2024-11-09 05:29:12,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946068885] [2024-11-09 05:29:12,838 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 05:29:12,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 05:29:12,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:29:12,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 05:29:12,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2024-11-09 05:29:12,839 INFO L87 Difference]: Start difference. First operand 2641 states and 9676 transitions. Second operand has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 17 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:12,840 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2024-11-09 05:29:12,840 INFO L432 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:29:12,841 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:29:12,861 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 05:29:13,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:29:13,042 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:177) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertCodeBlock(IncrementalHoareTripleChecker.java:436) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:278) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:284) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.releaseLock(ChainingHoareTripleChecker.java:449) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1655) at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:658) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.releaseLock(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:385) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:236) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) 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$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:175) ... 36 more [2024-11-09 05:29:13,044 INFO L158 Benchmark]: Toolchain (without parser) took 635722.37ms. Allocated memory was 119.5MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 86.0MB in the beginning and 1.0GB in the end (delta: -961.0MB). Peak memory consumption was 203.3MB. Max. memory is 16.1GB. [2024-11-09 05:29:13,044 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 119.5MB. Free memory was 86.7MB in the beginning and 86.7MB in the end (delta: 23.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 05:29:13,044 INFO L158 Benchmark]: CACSL2BoogieTranslator took 473.48ms. Allocated memory is still 119.5MB. Free memory was 86.0MB in the beginning and 71.7MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-09 05:29:13,045 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.83ms. Allocated memory is still 119.5MB. Free memory was 71.7MB in the beginning and 69.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 05:29:13,045 INFO L158 Benchmark]: Boogie Preprocessor took 72.20ms. Allocated memory is still 119.5MB. Free memory was 69.1MB in the beginning and 67.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 05:29:13,046 INFO L158 Benchmark]: RCFGBuilder took 1498.08ms. Allocated memory was 119.5MB in the beginning and 155.2MB in the end (delta: 35.7MB). Free memory was 67.1MB in the beginning and 68.5MB in the end (delta: -1.4MB). Peak memory consumption was 42.1MB. Max. memory is 16.1GB. [2024-11-09 05:29:13,047 INFO L158 Benchmark]: TraceAbstraction took 633602.10ms. Allocated memory was 155.2MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 68.5MB in the beginning and 1.0GB in the end (delta: -978.5MB). Peak memory consumption was 148.6MB. Max. memory is 16.1GB. [2024-11-09 05:29:13,048 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 119.5MB. Free memory was 86.7MB in the beginning and 86.7MB in the end (delta: 23.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 473.48ms. Allocated memory is still 119.5MB. Free memory was 86.0MB in the beginning and 71.7MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.83ms. Allocated memory is still 119.5MB. Free memory was 71.7MB in the beginning and 69.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 72.20ms. Allocated memory is still 119.5MB. Free memory was 69.1MB in the beginning and 67.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1498.08ms. Allocated memory was 119.5MB in the beginning and 155.2MB in the end (delta: 35.7MB). Free memory was 67.1MB in the beginning and 68.5MB in the end (delta: -1.4MB). Peak memory consumption was 42.1MB. Max. memory is 16.1GB. * TraceAbstraction took 633602.10ms. Allocated memory was 155.2MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 68.5MB in the beginning and 1.0GB in the end (delta: -978.5MB). Peak memory consumption was 148.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 670814d0a16da58b0f26835e20c05a244e2f373856f13b9d4ff2a931783edf81 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:29:15,250 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:29:15,360 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2024-11-09 05:29:15,369 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:29:15,370 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:29:15,404 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:29:15,408 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:29:15,408 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:29:15,409 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:29:15,409 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:29:15,409 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:29:15,410 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:29:15,410 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:29:15,410 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:29:15,411 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:29:15,413 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:29:15,416 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:29:15,416 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:29:15,416 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:29:15,416 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:29:15,417 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:29:15,421 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:29:15,421 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:29:15,422 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:29:15,422 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 05:29:15,422 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-09 05:29:15,422 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:29:15,423 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-09 05:29:15,423 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:29:15,423 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:29:15,423 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:29:15,423 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:29:15,424 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 05:29:15,424 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:29:15,425 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:29:15,426 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:29:15,426 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:29:15,426 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:29:15,427 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:29:15,427 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-09 05:29:15,428 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-09 05:29:15,428 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:29:15,429 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:29:15,430 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 670814d0a16da58b0f26835e20c05a244e2f373856f13b9d4ff2a931783edf81 [2024-11-09 05:29:15,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:29:15,880 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:29:15,885 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:29:15,886 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:29:15,887 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:29:15,888 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c Unable to find full path for "g++" [2024-11-09 05:29:17,986 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:29:18,271 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:29:18,275 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c [2024-11-09 05:29:18,291 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/data/11ae67917/c6a121e738994164b24d252556b7f349/FLAG29b499ca3 [2024-11-09 05:29:18,312 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/data/11ae67917/c6a121e738994164b24d252556b7f349 [2024-11-09 05:29:18,315 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:29:18,318 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:29:18,321 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:29:18,322 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:29:18,332 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:29:18,333 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:29:18" (1/1) ... [2024-11-09 05:29:18,334 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@760edcd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:29:18, skipping insertion in model container [2024-11-09 05:29:18,336 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:29:18" (1/1) ... [2024-11-09 05:29:18,400 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:29:18,732 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c[2862,2875] [2024-11-09 05:29:18,746 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 05:29:18,755 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:29:18,800 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:29:18,873 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c[2862,2875] [2024-11-09 05:29:18,887 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:29:18,915 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:29:18,916 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:29:18 WrapperNode [2024-11-09 05:29:18,916 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:29:18,918 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:29:18,918 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:29:18,918 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:29:18,927 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:29:18" (1/1) ... [2024-11-09 05:29:18,940 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:29:18" (1/1) ... [2024-11-09 05:29:18,983 INFO L138 Inliner]: procedures = 27, calls = 42, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 211 [2024-11-09 05:29:18,986 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:29:18,987 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:29:18,988 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:29:18,988 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:29:18,999 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:29:18" (1/1) ... [2024-11-09 05:29:19,000 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:29:18" (1/1) ... [2024-11-09 05:29:19,010 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:29:18" (1/1) ... [2024-11-09 05:29:19,014 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:29:18" (1/1) ... [2024-11-09 05:29:19,031 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:29:18" (1/1) ... [2024-11-09 05:29:19,043 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:29:18" (1/1) ... [2024-11-09 05:29:19,046 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:29:18" (1/1) ... [2024-11-09 05:29:19,052 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:29:18" (1/1) ... [2024-11-09 05:29:19,058 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:29:19,059 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:29:19,061 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:29:19,061 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:29:19,062 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:29:18" (1/1) ... [2024-11-09 05:29:19,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:29:19,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:29:19,101 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:29:19,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:29:19,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:29:19,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-09 05:29:19,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2024-11-09 05:29:19,139 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 05:29:19,140 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 05:29:19,140 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 05:29:19,140 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 05:29:19,140 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-09 05:29:19,142 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-09 05:29:19,142 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-09 05:29:19,143 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-09 05:29:19,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 05:29:19,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:29:19,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:29:19,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2024-11-09 05:29:19,145 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 05:29:19,313 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:29:19,316 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:29:20,008 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 05:29:20,009 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:29:20,491 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:29:20,493 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 05:29:20,493 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:29:20 BoogieIcfgContainer [2024-11-09 05:29:20,494 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:29:20,496 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:29:20,497 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:29:20,501 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:29:20,501 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:29:18" (1/3) ... [2024-11-09 05:29:20,502 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cfd9694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:29:20, skipping insertion in model container [2024-11-09 05:29:20,502 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:29:18" (2/3) ... [2024-11-09 05:29:20,503 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cfd9694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:29:20, skipping insertion in model container [2024-11-09 05:29:20,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:29:20" (3/3) ... [2024-11-09 05:29:20,506 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-max.wvr.c [2024-11-09 05:29:20,526 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:29:20,526 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 05:29:20,526 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 05:29:20,597 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-09 05:29:20,636 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 54 places, 57 transitions, 135 flow [2024-11-09 05:29:20,765 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 874 states, 873 states have (on average 3.8510882016036656) internal successors, (3362), 873 states have internal predecessors, (3362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:20,797 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:29:20,806 INFO L333 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, 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;@38a09a05, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:29:20,806 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-09 05:29:20,813 INFO L276 IsEmpty]: Start isEmpty. Operand has 874 states, 873 states have (on average 3.8510882016036656) internal successors, (3362), 873 states have internal predecessors, (3362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:20,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 05:29:20,844 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:29:20,845 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:29:20,848 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 05:29:20,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:29:20,857 INFO L85 PathProgramCache]: Analyzing trace with hash 105846142, now seen corresponding path program 1 times [2024-11-09 05:29:20,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:29:20,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2105356678] [2024-11-09 05:29:20,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:29:20,873 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:29:20,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:29:20,877 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 05:29:20,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-09 05:29:21,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:29:21,092 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 05:29:21,098 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:29:21,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:29:21,184 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:29:21,185 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:29:21,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2105356678] [2024-11-09 05:29:21,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2105356678] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:29:21,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:29:21,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:29:21,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813479256] [2024-11-09 05:29:21,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:29:21,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:29:21,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:29:21,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:29:21,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:29:21,228 INFO L87 Difference]: Start difference. First operand has 874 states, 873 states have (on average 3.8510882016036656) internal successors, (3362), 873 states have internal predecessors, (3362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:21,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:29:21,508 INFO L93 Difference]: Finished difference Result 1747 states and 6723 transitions. [2024-11-09 05:29:21,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:29:21,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2024-11-09 05:29:21,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:29:21,539 INFO L225 Difference]: With dead ends: 1747 [2024-11-09 05:29:21,539 INFO L226 Difference]: Without dead ends: 876 [2024-11-09 05:29:21,545 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:29:21,549 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:29:21,550 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 29 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:29:21,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2024-11-09 05:29:21,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 876. [2024-11-09 05:29:21,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 875 states have (on average 3.8445714285714288) internal successors, (3364), 875 states have internal predecessors, (3364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:21,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 3364 transitions. [2024-11-09 05:29:21,691 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 3364 transitions. Word has length 27 [2024-11-09 05:29:21,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:29:21,691 INFO L471 AbstractCegarLoop]: Abstraction has 876 states and 3364 transitions. [2024-11-09 05:29:21,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:21,692 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 3364 transitions. [2024-11-09 05:29:21,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-09 05:29:21,697 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:29:21,697 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:29:21,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-09 05:29:21,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:29:21,902 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 05:29:21,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:29:21,903 INFO L85 PathProgramCache]: Analyzing trace with hash 2053662373, now seen corresponding path program 1 times [2024-11-09 05:29:21,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:29:21,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2000818684] [2024-11-09 05:29:21,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:29:21,904 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:29:21,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:29:21,907 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 05:29:21,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-09 05:29:22,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:29:22,087 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 05:29:22,089 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:29:22,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:29:22,258 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:29:22,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:29:22,418 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:29:22,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2000818684] [2024-11-09 05:29:22,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2000818684] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:29:22,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2318656] [2024-11-09 05:29:22,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:29:22,420 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:29:22,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:29:22,432 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:29:22,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-09 05:29:22,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:29:22,717 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 05:29:22,719 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:29:22,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:29:22,849 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:29:23,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:29:23,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2318656] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:29:23,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020432672] [2024-11-09 05:29:23,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:29:23,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:29:23,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:29:23,018 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:29:23,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 05:29:23,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:29:23,168 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 05:29:23,171 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:29:23,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:29:23,310 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:29:23,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:29:23,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020432672] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:29:23,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 05:29:23,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 16 [2024-11-09 05:29:23,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129004259] [2024-11-09 05:29:23,437 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 05:29:23,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 05:29:23,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:29:23,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 05:29:23,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2024-11-09 05:29:23,440 INFO L87 Difference]: Start difference. First operand 876 states and 3364 transitions. Second operand has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 16 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:24,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:29:24,336 INFO L93 Difference]: Finished difference Result 2630 states and 10102 transitions. [2024-11-09 05:29:24,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 05:29:24,338 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 16 states have internal predecessors, (48), 0 states have call successors, (0), 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 29 [2024-11-09 05:29:24,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:29:24,356 INFO L225 Difference]: With dead ends: 2630 [2024-11-09 05:29:24,359 INFO L226 Difference]: Without dead ends: 1759 [2024-11-09 05:29:24,361 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 151 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=137, Invalid=283, Unknown=0, NotChecked=0, Total=420 [2024-11-09 05:29:24,362 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 227 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 05:29:24,363 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 43 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 05:29:24,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1759 states. [2024-11-09 05:29:24,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1759 to 889. [2024-11-09 05:29:24,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 889 states, 888 states have (on average 3.8018018018018016) internal successors, (3376), 888 states have internal predecessors, (3376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:24,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 3376 transitions. [2024-11-09 05:29:24,447 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 3376 transitions. Word has length 29 [2024-11-09 05:29:24,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:29:24,448 INFO L471 AbstractCegarLoop]: Abstraction has 889 states and 3376 transitions. [2024-11-09 05:29:24,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 16 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:24,448 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 3376 transitions. [2024-11-09 05:29:24,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 05:29:24,452 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:29:24,453 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:29:24,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-11-09 05:29:24,659 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2024-11-09 05:29:24,869 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 05:29:25,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:29:25,057 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 05:29:25,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:29:25,061 INFO L85 PathProgramCache]: Analyzing trace with hash 2098853635, now seen corresponding path program 1 times [2024-11-09 05:29:25,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:29:25,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1334034083] [2024-11-09 05:29:25,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:29:25,065 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:29:25,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:29:25,069 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 05:29:25,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-11-09 05:29:25,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:29:25,275 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 05:29:25,277 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:29:25,338 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:29:25,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2024-11-09 05:29:25,434 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:29:25,434 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:29:25,435 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:29:25,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1334034083] [2024-11-09 05:29:25,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1334034083] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:29:25,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:29:25,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:29:25,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865822374] [2024-11-09 05:29:25,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:29:25,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:29:25,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:29:25,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:29:25,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:29:25,437 INFO L87 Difference]: Start difference. First operand 889 states and 3376 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:25,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:29:25,710 INFO L93 Difference]: Finished difference Result 1644 states and 6329 transitions. [2024-11-09 05:29:25,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:29:25,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2024-11-09 05:29:25,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:29:25,725 INFO L225 Difference]: With dead ends: 1644 [2024-11-09 05:29:25,725 INFO L226 Difference]: Without dead ends: 1569 [2024-11-09 05:29:25,726 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:29:25,728 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 25 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:29:25,729 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 38 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:29:25,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2024-11-09 05:29:25,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1491. [2024-11-09 05:29:25,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1491 states, 1490 states have (on average 3.8369127516778523) internal successors, (5717), 1490 states have internal predecessors, (5717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:25,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1491 states to 1491 states and 5717 transitions. [2024-11-09 05:29:25,867 INFO L78 Accepts]: Start accepts. Automaton has 1491 states and 5717 transitions. Word has length 33 [2024-11-09 05:29:25,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:29:25,868 INFO L471 AbstractCegarLoop]: Abstraction has 1491 states and 5717 transitions. [2024-11-09 05:29:25,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:25,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1491 states and 5717 transitions. [2024-11-09 05:29:25,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-09 05:29:25,875 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:29:25,875 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:29:25,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2024-11-09 05:29:26,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:29:26,076 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 05:29:26,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:29:26,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1740134656, now seen corresponding path program 1 times [2024-11-09 05:29:26,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:29:26,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [693075989] [2024-11-09 05:29:26,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:29:26,077 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:29:26,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:29:26,081 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 05:29:26,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-11-09 05:29:26,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:29:26,256 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 05:29:26,258 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:29:26,479 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:29:26,479 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:29:26,662 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:29:26,663 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:29:26,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [693075989] [2024-11-09 05:29:26,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [693075989] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:29:26,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1333500689] [2024-11-09 05:29:26,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:29:26,664 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:29:26,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:29:26,667 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:29:26,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2024-11-09 05:29:26,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:29:26,919 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 05:29:26,922 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:29:27,129 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:29:27,129 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:29:27,262 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:29:27,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1333500689] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:29:27,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898617077] [2024-11-09 05:29:27,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:29:27,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:29:27,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:29:27,266 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:29:27,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 05:29:27,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:29:27,399 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 05:29:27,400 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:29:27,608 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:29:27,609 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:29:27,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898617077] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:29:27,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2024-11-09 05:29:27,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5, 5, 5] total 14 [2024-11-09 05:29:27,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315723248] [2024-11-09 05:29:27,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:29:27,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:29:27,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:29:27,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:29:27,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2024-11-09 05:29:27,615 INFO L87 Difference]: Start difference. First operand 1491 states and 5717 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:28,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:29:28,349 INFO L93 Difference]: Finished difference Result 3189 states and 12093 transitions. [2024-11-09 05:29:28,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 05:29:28,350 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-09 05:29:28,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:29:28,372 INFO L225 Difference]: With dead ends: 3189 [2024-11-09 05:29:28,373 INFO L226 Difference]: Without dead ends: 2854 [2024-11-09 05:29:28,374 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 156 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2024-11-09 05:29:28,375 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 133 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:29:28,376 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 62 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 05:29:28,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2854 states. [2024-11-09 05:29:28,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2854 to 1691. [2024-11-09 05:29:28,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1691 states, 1690 states have (on average 3.8171597633136094) internal successors, (6451), 1690 states have internal predecessors, (6451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:28,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1691 states to 1691 states and 6451 transitions. [2024-11-09 05:29:28,555 INFO L78 Accepts]: Start accepts. Automaton has 1691 states and 6451 transitions. Word has length 35 [2024-11-09 05:29:28,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:29:28,556 INFO L471 AbstractCegarLoop]: Abstraction has 1691 states and 6451 transitions. [2024-11-09 05:29:28,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:28,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1691 states and 6451 transitions. [2024-11-09 05:29:28,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-09 05:29:28,566 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:29:28,566 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:29:28,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2024-11-09 05:29:28,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2024-11-09 05:29:28,980 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 05:29:29,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:29:29,167 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 05:29:29,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:29:29,168 INFO L85 PathProgramCache]: Analyzing trace with hash -148725436, now seen corresponding path program 2 times [2024-11-09 05:29:29,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:29:29,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1467691659] [2024-11-09 05:29:29,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 05:29:29,169 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:29:29,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:29:29,174 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 05:29:29,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-11-09 05:29:29,407 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 05:29:29,408 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:29:29,414 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 05:29:29,415 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:29:29,585 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:29:29,586 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:29:29,586 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:29:29,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1467691659] [2024-11-09 05:29:29,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1467691659] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:29:29,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:29:29,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:29:29,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790183329] [2024-11-09 05:29:29,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:29:29,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:29:29,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:29:29,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:29:29,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:29:29,588 INFO L87 Difference]: Start difference. First operand 1691 states and 6451 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:30,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:29:30,373 INFO L93 Difference]: Finished difference Result 2509 states and 9545 transitions. [2024-11-09 05:29:30,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:29:30,374 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-09 05:29:30,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:29:30,398 INFO L225 Difference]: With dead ends: 2509 [2024-11-09 05:29:30,398 INFO L226 Difference]: Without dead ends: 2286 [2024-11-09 05:29:30,399 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-09 05:29:30,401 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 87 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:29:30,401 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 40 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 05:29:30,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2286 states. [2024-11-09 05:29:30,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2286 to 1655. [2024-11-09 05:29:30,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1655 states, 1654 states have (on average 3.8107617896009676) internal successors, (6303), 1654 states have internal predecessors, (6303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:30,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1655 states to 1655 states and 6303 transitions. [2024-11-09 05:29:30,586 INFO L78 Accepts]: Start accepts. Automaton has 1655 states and 6303 transitions. Word has length 35 [2024-11-09 05:29:30,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:29:30,587 INFO L471 AbstractCegarLoop]: Abstraction has 1655 states and 6303 transitions. [2024-11-09 05:29:30,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:30,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1655 states and 6303 transitions. [2024-11-09 05:29:30,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-09 05:29:30,593 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:29:30,593 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:29:30,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2024-11-09 05:29:30,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:29:30,797 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 05:29:30,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:29:30,798 INFO L85 PathProgramCache]: Analyzing trace with hash -847742530, now seen corresponding path program 3 times [2024-11-09 05:29:30,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:29:30,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [55742204] [2024-11-09 05:29:30,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:29:30,799 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:29:30,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:29:30,803 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 05:29:30,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-11-09 05:29:31,037 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 05:29:31,038 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:29:31,045 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 05:29:31,046 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:29:31,262 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:29:31,263 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:29:31,263 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:29:31,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [55742204] [2024-11-09 05:29:31,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [55742204] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:29:31,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:29:31,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:29:31,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478506658] [2024-11-09 05:29:31,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:29:31,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:29:31,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:29:31,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:29:31,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:29:31,266 INFO L87 Difference]: Start difference. First operand 1655 states and 6303 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:32,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:29:32,124 INFO L93 Difference]: Finished difference Result 3978 states and 15667 transitions. [2024-11-09 05:29:32,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 05:29:32,125 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-09 05:29:32,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:29:32,153 INFO L225 Difference]: With dead ends: 3978 [2024-11-09 05:29:32,154 INFO L226 Difference]: Without dead ends: 3327 [2024-11-09 05:29:32,156 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:29:32,157 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 129 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:29:32,157 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 61 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 05:29:32,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3327 states. [2024-11-09 05:29:32,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3327 to 1927. [2024-11-09 05:29:32,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1927 states, 1926 states have (on average 3.9080996884735204) internal successors, (7527), 1926 states have internal predecessors, (7527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:32,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1927 states to 1927 states and 7527 transitions. [2024-11-09 05:29:32,397 INFO L78 Accepts]: Start accepts. Automaton has 1927 states and 7527 transitions. Word has length 35 [2024-11-09 05:29:32,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:29:32,398 INFO L471 AbstractCegarLoop]: Abstraction has 1927 states and 7527 transitions. [2024-11-09 05:29:32,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:32,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1927 states and 7527 transitions. [2024-11-09 05:29:32,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-09 05:29:32,408 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:29:32,408 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:29:32,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2024-11-09 05:29:32,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:29:32,612 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 05:29:32,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:29:32,613 INFO L85 PathProgramCache]: Analyzing trace with hash 15357438, now seen corresponding path program 4 times [2024-11-09 05:29:32,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:29:32,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1582005357] [2024-11-09 05:29:32,614 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 05:29:32,615 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:29:32,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:29:32,620 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 05:29:32,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-11-09 05:29:32,739 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 05:29:32,739 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:29:32,742 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 05:29:32,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:29:32,796 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:29:32,796 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:29:32,796 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:29:32,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1582005357] [2024-11-09 05:29:32,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1582005357] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:29:32,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:29:32,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:29:32,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910429190] [2024-11-09 05:29:32,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:29:32,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:29:32,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:29:32,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:29:32,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:29:32,799 INFO L87 Difference]: Start difference. First operand 1927 states and 7527 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:33,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:29:33,659 INFO L93 Difference]: Finished difference Result 3913 states and 15213 transitions. [2024-11-09 05:29:33,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:29:33,660 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-09 05:29:33,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:29:33,685 INFO L225 Difference]: With dead ends: 3913 [2024-11-09 05:29:33,685 INFO L226 Difference]: Without dead ends: 3186 [2024-11-09 05:29:33,687 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:29:33,688 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 86 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:29:33,688 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 85 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 05:29:33,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3186 states. [2024-11-09 05:29:33,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3186 to 2237. [2024-11-09 05:29:33,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2237 states, 2236 states have (on average 3.966010733452594) internal successors, (8868), 2236 states have internal predecessors, (8868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:33,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2237 states to 2237 states and 8868 transitions. [2024-11-09 05:29:33,942 INFO L78 Accepts]: Start accepts. Automaton has 2237 states and 8868 transitions. Word has length 35 [2024-11-09 05:29:33,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:29:33,942 INFO L471 AbstractCegarLoop]: Abstraction has 2237 states and 8868 transitions. [2024-11-09 05:29:33,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:33,943 INFO L276 IsEmpty]: Start isEmpty. Operand 2237 states and 8868 transitions. [2024-11-09 05:29:33,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-09 05:29:33,950 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:29:33,950 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:29:33,954 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2024-11-09 05:29:34,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:29:34,153 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 05:29:34,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:29:34,154 INFO L85 PathProgramCache]: Analyzing trace with hash -217429922, now seen corresponding path program 5 times [2024-11-09 05:29:34,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:29:34,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2037363880] [2024-11-09 05:29:34,154 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 05:29:34,154 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:29:34,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:29:34,155 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 05:29:34,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-11-09 05:29:34,306 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 05:29:34,306 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:29:34,310 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 05:29:34,311 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:29:34,499 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:29:34,499 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:29:34,499 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:29:34,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2037363880] [2024-11-09 05:29:34,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2037363880] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:29:34,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:29:34,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:29:34,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429055679] [2024-11-09 05:29:34,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:29:34,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:29:34,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:29:34,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:29:34,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:29:34,501 INFO L87 Difference]: Start difference. First operand 2237 states and 8868 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:35,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:29:35,354 INFO L93 Difference]: Finished difference Result 4576 states and 18098 transitions. [2024-11-09 05:29:35,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 05:29:35,355 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-09 05:29:35,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:29:35,377 INFO L225 Difference]: With dead ends: 4576 [2024-11-09 05:29:35,377 INFO L226 Difference]: Without dead ends: 3489 [2024-11-09 05:29:35,380 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:29:35,381 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 108 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:29:35,381 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 54 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:29:35,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3489 states. [2024-11-09 05:29:35,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3489 to 2829. [2024-11-09 05:29:35,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2829 states, 2828 states have (on average 3.92998585572843) internal successors, (11114), 2828 states have internal predecessors, (11114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:35,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2829 states to 2829 states and 11114 transitions. [2024-11-09 05:29:35,640 INFO L78 Accepts]: Start accepts. Automaton has 2829 states and 11114 transitions. Word has length 35 [2024-11-09 05:29:35,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:29:35,640 INFO L471 AbstractCegarLoop]: Abstraction has 2829 states and 11114 transitions. [2024-11-09 05:29:35,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:35,641 INFO L276 IsEmpty]: Start isEmpty. Operand 2829 states and 11114 transitions. [2024-11-09 05:29:35,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-09 05:29:35,656 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:29:35,656 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:29:35,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2024-11-09 05:29:35,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:29:35,860 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 05:29:35,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:29:35,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1322158726, now seen corresponding path program 6 times [2024-11-09 05:29:35,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:29:35,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1199902764] [2024-11-09 05:29:35,861 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 05:29:35,861 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:29:35,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:29:35,862 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 05:29:35,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-11-09 05:29:36,024 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-09 05:29:36,024 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:29:36,028 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 05:29:36,030 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:29:36,167 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:29:36,168 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:29:36,168 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:29:36,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1199902764] [2024-11-09 05:29:36,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1199902764] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:29:36,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:29:36,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:29:36,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885711737] [2024-11-09 05:29:36,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:29:36,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:29:36,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:29:36,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:29:36,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:29:36,169 INFO L87 Difference]: Start difference. First operand 2829 states and 11114 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:36,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:29:36,986 INFO L93 Difference]: Finished difference Result 4621 states and 18172 transitions. [2024-11-09 05:29:36,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 05:29:36,987 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-09 05:29:36,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:29:37,017 INFO L225 Difference]: With dead ends: 4621 [2024-11-09 05:29:37,017 INFO L226 Difference]: Without dead ends: 3801 [2024-11-09 05:29:37,021 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:29:37,021 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 109 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:29:37,022 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 65 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:29:37,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3801 states. [2024-11-09 05:29:37,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3801 to 3033. [2024-11-09 05:29:37,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3033 states, 3032 states have (on average 3.925791556728232) internal successors, (11903), 3032 states have internal predecessors, (11903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:37,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3033 states to 3033 states and 11903 transitions. [2024-11-09 05:29:37,483 INFO L78 Accepts]: Start accepts. Automaton has 3033 states and 11903 transitions. Word has length 35 [2024-11-09 05:29:37,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:29:37,484 INFO L471 AbstractCegarLoop]: Abstraction has 3033 states and 11903 transitions. [2024-11-09 05:29:37,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:37,485 INFO L276 IsEmpty]: Start isEmpty. Operand 3033 states and 11903 transitions. [2024-11-09 05:29:37,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-09 05:29:37,493 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:29:37,493 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:29:37,501 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2024-11-09 05:29:37,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:29:37,694 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 05:29:37,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:29:37,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1091966662, now seen corresponding path program 7 times [2024-11-09 05:29:37,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:29:37,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [38413384] [2024-11-09 05:29:37,696 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 05:29:37,696 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:29:37,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:29:37,699 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 05:29:37,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-11-09 05:29:37,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:29:37,833 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 05:29:37,834 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:29:37,990 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:29:37,990 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:29:38,116 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:29:38,116 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:29:38,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [38413384] [2024-11-09 05:29:38,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [38413384] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:29:38,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [388610430] [2024-11-09 05:29:38,117 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 05:29:38,117 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:29:38,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:29:38,118 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:29:38,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2024-11-09 05:29:38,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:29:38,336 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 05:29:38,337 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:29:38,469 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:29:38,469 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:29:38,576 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:29:38,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [388610430] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:29:38,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002673130] [2024-11-09 05:29:38,576 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 05:29:38,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:29:38,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:29:38,578 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:29:38,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 05:29:38,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:29:38,711 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 05:29:38,712 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:29:38,949 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:29:38,949 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:29:38,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002673130] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:29:38,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2024-11-09 05:29:38,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5, 5, 5] total 16 [2024-11-09 05:29:38,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970584128] [2024-11-09 05:29:38,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:29:38,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:29:38,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:29:38,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:29:38,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2024-11-09 05:29:38,951 INFO L87 Difference]: Start difference. First operand 3033 states and 11903 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:39,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:29:39,723 INFO L93 Difference]: Finished difference Result 5121 states and 19870 transitions. [2024-11-09 05:29:39,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 05:29:39,724 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-09 05:29:39,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:29:39,752 INFO L225 Difference]: With dead ends: 5121 [2024-11-09 05:29:39,752 INFO L226 Difference]: Without dead ends: 4292 [2024-11-09 05:29:39,756 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2024-11-09 05:29:39,756 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 98 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:29:39,757 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 28 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:29:39,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4292 states. [2024-11-09 05:29:40,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4292 to 3467. [2024-11-09 05:29:40,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3467 states, 3466 states have (on average 3.883727639930756) internal successors, (13461), 3466 states have internal predecessors, (13461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:40,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3467 states to 3467 states and 13461 transitions. [2024-11-09 05:29:40,207 INFO L78 Accepts]: Start accepts. Automaton has 3467 states and 13461 transitions. Word has length 35 [2024-11-09 05:29:40,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:29:40,208 INFO L471 AbstractCegarLoop]: Abstraction has 3467 states and 13461 transitions. [2024-11-09 05:29:40,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:40,208 INFO L276 IsEmpty]: Start isEmpty. Operand 3467 states and 13461 transitions. [2024-11-09 05:29:40,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-09 05:29:40,218 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:29:40,218 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:29:40,223 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2024-11-09 05:29:40,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2024-11-09 05:29:40,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-09 05:29:40,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:29:40,820 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 05:29:40,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:29:40,820 INFO L85 PathProgramCache]: Analyzing trace with hash -869874604, now seen corresponding path program 8 times [2024-11-09 05:29:40,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:29:40,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [843667382] [2024-11-09 05:29:40,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 05:29:40,821 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:29:40,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:29:40,822 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 05:29:40,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2024-11-09 05:29:40,999 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 05:29:41,000 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:29:41,004 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 05:29:41,005 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:29:41,174 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:29:41,174 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:29:41,174 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:29:41,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [843667382] [2024-11-09 05:29:41,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [843667382] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:29:41,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:29:41,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:29:41,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751847166] [2024-11-09 05:29:41,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:29:41,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:29:41,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:29:41,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:29:41,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:29:41,176 INFO L87 Difference]: Start difference. First operand 3467 states and 13461 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:42,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:29:42,328 INFO L93 Difference]: Finished difference Result 4916 states and 19055 transitions. [2024-11-09 05:29:42,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 05:29:42,329 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-09 05:29:42,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:29:42,353 INFO L225 Difference]: With dead ends: 4916 [2024-11-09 05:29:42,353 INFO L226 Difference]: Without dead ends: 4047 [2024-11-09 05:29:42,357 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:29:42,358 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 111 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:29:42,358 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 45 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:29:42,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4047 states. [2024-11-09 05:29:42,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4047 to 3549. [2024-11-09 05:29:42,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3549 states, 3548 states have (on average 3.9165727170236755) internal successors, (13896), 3548 states have internal predecessors, (13896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:42,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3549 states to 3549 states and 13896 transitions. [2024-11-09 05:29:42,833 INFO L78 Accepts]: Start accepts. Automaton has 3549 states and 13896 transitions. Word has length 35 [2024-11-09 05:29:42,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:29:42,834 INFO L471 AbstractCegarLoop]: Abstraction has 3549 states and 13896 transitions. [2024-11-09 05:29:42,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:42,834 INFO L276 IsEmpty]: Start isEmpty. Operand 3549 states and 13896 transitions. [2024-11-09 05:29:42,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-09 05:29:42,844 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:29:42,845 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:29:42,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2024-11-09 05:29:43,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:29:43,045 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 05:29:43,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:29:43,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1102661964, now seen corresponding path program 9 times [2024-11-09 05:29:43,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:29:43,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [131681525] [2024-11-09 05:29:43,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:29:43,046 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:29:43,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:29:43,047 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 05:29:43,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2024-11-09 05:29:43,199 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 05:29:43,200 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:29:43,204 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 05:29:43,205 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:29:43,360 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:29:43,360 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:29:43,481 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:29:43,481 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:29:43,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [131681525] [2024-11-09 05:29:43,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [131681525] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:29:43,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1458794445] [2024-11-09 05:29:43,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:29:43,482 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:29:43,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:29:43,483 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:29:43,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2024-11-09 05:29:43,753 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 05:29:43,753 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:29:43,756 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 05:29:43,757 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:29:43,933 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:29:43,933 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:29:44,002 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:29:44,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1458794445] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:29:44,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052516888] [2024-11-09 05:29:44,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:29:44,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:29:44,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:29:44,005 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:29:44,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-09 05:29:44,172 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 05:29:44,172 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:29:44,177 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 05:29:44,179 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:29:44,361 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:29:44,361 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:29:44,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052516888] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:29:44,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2024-11-09 05:29:44,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5, 5, 5] total 17 [2024-11-09 05:29:44,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724754107] [2024-11-09 05:29:44,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:29:44,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:29:44,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:29:44,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:29:44,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2024-11-09 05:29:44,363 INFO L87 Difference]: Start difference. First operand 3549 states and 13896 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:45,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:29:45,406 INFO L93 Difference]: Finished difference Result 5733 states and 22378 transitions. [2024-11-09 05:29:45,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 05:29:45,407 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-09 05:29:45,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:29:45,453 INFO L225 Difference]: With dead ends: 5733 [2024-11-09 05:29:45,457 INFO L226 Difference]: Without dead ends: 4805 [2024-11-09 05:29:45,466 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2024-11-09 05:29:45,469 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 118 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:29:45,472 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 61 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:29:45,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4805 states. [2024-11-09 05:29:45,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4805 to 3369. [2024-11-09 05:29:45,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3369 states, 3368 states have (on average 3.8954869358669835) internal successors, (13120), 3368 states have internal predecessors, (13120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:45,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3369 states to 3369 states and 13120 transitions. [2024-11-09 05:29:45,879 INFO L78 Accepts]: Start accepts. Automaton has 3369 states and 13120 transitions. Word has length 35 [2024-11-09 05:29:45,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:29:45,880 INFO L471 AbstractCegarLoop]: Abstraction has 3369 states and 13120 transitions. [2024-11-09 05:29:45,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:45,880 INFO L276 IsEmpty]: Start isEmpty. Operand 3369 states and 13120 transitions. [2024-11-09 05:29:45,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-09 05:29:45,890 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:29:45,890 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:29:45,895 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2024-11-09 05:29:46,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-09 05:29:46,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2024-11-09 05:29:46,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:29:46,491 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 05:29:46,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:29:46,492 INFO L85 PathProgramCache]: Analyzing trace with hash -906539478, now seen corresponding path program 10 times [2024-11-09 05:29:46,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:29:46,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1566160953] [2024-11-09 05:29:46,493 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 05:29:46,493 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:29:46,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:29:46,496 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 05:29:46,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2024-11-09 05:29:46,585 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 05:29:46,585 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:29:46,587 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 05:29:46,588 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:29:46,616 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:29:46,617 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:29:46,617 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:29:46,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1566160953] [2024-11-09 05:29:46,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1566160953] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:29:46,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:29:46,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:29:46,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354365932] [2024-11-09 05:29:46,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:29:46,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:29:46,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:29:46,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:29:46,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:29:46,618 INFO L87 Difference]: Start difference. First operand 3369 states and 13120 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:47,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:29:47,649 INFO L93 Difference]: Finished difference Result 5727 states and 21674 transitions. [2024-11-09 05:29:47,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 05:29:47,651 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-09 05:29:47,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:29:47,678 INFO L225 Difference]: With dead ends: 5727 [2024-11-09 05:29:47,678 INFO L226 Difference]: Without dead ends: 4748 [2024-11-09 05:29:47,682 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:29:47,683 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 122 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:29:47,684 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 84 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:29:47,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4748 states. [2024-11-09 05:29:48,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4748 to 3155. [2024-11-09 05:29:48,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3155 states, 3154 states have (on average 3.8478123018389345) internal successors, (12136), 3154 states have internal predecessors, (12136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:48,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3155 states to 3155 states and 12136 transitions. [2024-11-09 05:29:48,236 INFO L78 Accepts]: Start accepts. Automaton has 3155 states and 12136 transitions. Word has length 35 [2024-11-09 05:29:48,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:29:48,236 INFO L471 AbstractCegarLoop]: Abstraction has 3155 states and 12136 transitions. [2024-11-09 05:29:48,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:48,237 INFO L276 IsEmpty]: Start isEmpty. Operand 3155 states and 12136 transitions. [2024-11-09 05:29:48,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 05:29:48,246 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:29:48,247 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:29:48,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2024-11-09 05:29:48,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:29:48,447 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 05:29:48,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:29:48,448 INFO L85 PathProgramCache]: Analyzing trace with hash 587324162, now seen corresponding path program 1 times [2024-11-09 05:29:48,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:29:48,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [481849843] [2024-11-09 05:29:48,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:29:48,448 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:29:48,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:29:48,449 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 05:29:48,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2024-11-09 05:29:48,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:29:48,606 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 05:29:48,607 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:29:48,730 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:29:48,731 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:29:48,846 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:29:48,846 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:29:48,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [481849843] [2024-11-09 05:29:48,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [481849843] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:29:48,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1936312434] [2024-11-09 05:29:48,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:29:48,847 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:29:48,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:29:48,851 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:29:48,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2024-11-09 05:29:49,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:29:49,108 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 05:29:49,110 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:29:49,219 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:29:49,219 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:29:49,303 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:29:49,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1936312434] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:29:49,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990562304] [2024-11-09 05:29:49,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:29:49,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:29:49,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:29:49,304 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:29:49,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-09 05:29:49,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:29:49,442 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 05:29:49,443 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:29:49,653 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:29:49,654 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:29:49,759 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:29:49,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990562304] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 05:29:49,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 5 imperfect interpolant sequences. [2024-11-09 05:29:49,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5, 5, 5, 5] total 20 [2024-11-09 05:29:49,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10970817] [2024-11-09 05:29:49,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:29:49,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:29:49,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:29:49,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:29:49,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2024-11-09 05:29:49,760 INFO L87 Difference]: Start difference. First operand 3155 states and 12136 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:50,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:29:50,767 INFO L93 Difference]: Finished difference Result 4273 states and 16130 transitions. [2024-11-09 05:29:50,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 05:29:50,769 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2024-11-09 05:29:50,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:29:50,790 INFO L225 Difference]: With dead ends: 4273 [2024-11-09 05:29:50,790 INFO L226 Difference]: Without dead ends: 3946 [2024-11-09 05:29:50,793 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 209 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2024-11-09 05:29:50,793 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 68 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:29:50,794 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 54 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:29:50,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3946 states. [2024-11-09 05:29:51,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3946 to 2831. [2024-11-09 05:29:51,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2831 states, 2830 states have (on average 3.7607773851590105) internal successors, (10643), 2830 states have internal predecessors, (10643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:51,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2831 states to 2831 states and 10643 transitions. [2024-11-09 05:29:51,211 INFO L78 Accepts]: Start accepts. Automaton has 2831 states and 10643 transitions. Word has length 39 [2024-11-09 05:29:51,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:29:51,211 INFO L471 AbstractCegarLoop]: Abstraction has 2831 states and 10643 transitions. [2024-11-09 05:29:51,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:51,212 INFO L276 IsEmpty]: Start isEmpty. Operand 2831 states and 10643 transitions. [2024-11-09 05:29:51,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 05:29:51,220 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:29:51,220 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:29:51,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2024-11-09 05:29:51,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (24)] Ended with exit code 0 [2024-11-09 05:29:51,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-09 05:29:51,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:29:51,821 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 05:29:51,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:29:51,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1275760228, now seen corresponding path program 2 times [2024-11-09 05:29:51,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:29:51,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [9934466] [2024-11-09 05:29:51,822 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 05:29:51,822 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:29:51,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:29:51,824 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 05:29:51,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2024-11-09 05:29:52,003 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 05:29:52,004 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:29:52,011 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 05:29:52,012 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:29:52,246 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:29:52,246 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:29:52,450 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:29:52,450 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:29:52,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [9934466] [2024-11-09 05:29:52,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [9934466] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:29:52,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1081133583] [2024-11-09 05:29:52,450 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 05:29:52,451 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:29:52,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:29:52,454 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:29:52,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2024-11-09 05:29:52,850 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 05:29:52,850 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:29:52,852 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 05:29:52,853 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:29:53,048 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:29:53,048 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:29:53,262 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:29:53,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1081133583] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:29:53,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137950866] [2024-11-09 05:29:53,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 05:29:53,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:29:53,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:29:53,265 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:29:53,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-09 05:29:53,429 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 05:29:53,429 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:29:53,436 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 05:29:53,437 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:29:53,624 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:29:53,625 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:29:53,736 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:29:53,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137950866] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 05:29:53,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 5 imperfect interpolant sequences. [2024-11-09 05:29:53,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 7, 5, 5, 5] total 24 [2024-11-09 05:29:53,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797442979] [2024-11-09 05:29:53,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:29:53,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:29:53,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:29:53,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:29:53,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2024-11-09 05:29:53,738 INFO L87 Difference]: Start difference. First operand 2831 states and 10643 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:54,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:29:54,895 INFO L93 Difference]: Finished difference Result 3930 states and 14652 transitions. [2024-11-09 05:29:54,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:29:54,896 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2024-11-09 05:29:54,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:29:54,909 INFO L225 Difference]: With dead ends: 3930 [2024-11-09 05:29:54,910 INFO L226 Difference]: Without dead ends: 3799 [2024-11-09 05:29:54,911 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=146, Invalid=504, Unknown=0, NotChecked=0, Total=650 [2024-11-09 05:29:54,912 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 77 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:29:54,912 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 39 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 05:29:54,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3799 states. [2024-11-09 05:29:55,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3799 to 2844. [2024-11-09 05:29:55,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2844 states, 2843 states have (on average 3.7646851916989097) internal successors, (10703), 2843 states have internal predecessors, (10703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:55,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2844 states to 2844 states and 10703 transitions. [2024-11-09 05:29:55,258 INFO L78 Accepts]: Start accepts. Automaton has 2844 states and 10703 transitions. Word has length 39 [2024-11-09 05:29:55,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:29:55,258 INFO L471 AbstractCegarLoop]: Abstraction has 2844 states and 10703 transitions. [2024-11-09 05:29:55,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:55,259 INFO L276 IsEmpty]: Start isEmpty. Operand 2844 states and 10703 transitions. [2024-11-09 05:29:55,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 05:29:55,266 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:29:55,266 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:29:55,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-09 05:29:55,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2024-11-09 05:29:55,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2024-11-09 05:29:55,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:29:55,871 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 05:29:55,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:29:55,871 INFO L85 PathProgramCache]: Analyzing trace with hash -793159256, now seen corresponding path program 3 times [2024-11-09 05:29:55,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:29:55,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [422973768] [2024-11-09 05:29:55,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:29:55,872 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:29:55,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:29:55,873 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 05:29:55,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2024-11-09 05:29:56,032 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 05:29:56,032 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:29:56,036 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 05:29:56,037 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:29:56,168 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:29:56,168 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:29:56,280 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:29:56,280 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:29:56,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [422973768] [2024-11-09 05:29:56,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [422973768] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:29:56,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [774349084] [2024-11-09 05:29:56,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:29:56,280 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:29:56,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:29:56,285 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:29:56,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2024-11-09 05:29:56,572 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 05:29:56,572 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:29:56,575 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 05:29:56,576 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:29:56,747 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:29:56,747 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:29:56,800 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:29:56,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [774349084] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:29:56,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735145002] [2024-11-09 05:29:56,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:29:56,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:29:56,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:29:56,803 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:29:56,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-09 05:29:56,980 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 05:29:56,980 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:29:56,987 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 05:29:56,988 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:29:57,169 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 05:29:57,169 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:29:57,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735145002] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:29:57,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2024-11-09 05:29:57,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5, 5, 5] total 17 [2024-11-09 05:29:57,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856451734] [2024-11-09 05:29:57,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:29:57,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:29:57,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:29:57,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:29:57,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2024-11-09 05:29:57,171 INFO L87 Difference]: Start difference. First operand 2844 states and 10703 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:58,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:29:58,116 INFO L93 Difference]: Finished difference Result 4490 states and 16779 transitions. [2024-11-09 05:29:58,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 05:29:58,117 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2024-11-09 05:29:58,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:29:58,132 INFO L225 Difference]: With dead ends: 4490 [2024-11-09 05:29:58,132 INFO L226 Difference]: Without dead ends: 3827 [2024-11-09 05:29:58,134 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2024-11-09 05:29:58,135 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 110 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:29:58,135 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 48 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:29:58,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3827 states. [2024-11-09 05:29:58,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3827 to 2606. [2024-11-09 05:29:58,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2606 states, 2605 states have (on average 3.7312859884836853) internal successors, (9720), 2605 states have internal predecessors, (9720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:58,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2606 states to 2606 states and 9720 transitions. [2024-11-09 05:29:58,534 INFO L78 Accepts]: Start accepts. Automaton has 2606 states and 9720 transitions. Word has length 39 [2024-11-09 05:29:58,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:29:58,535 INFO L471 AbstractCegarLoop]: Abstraction has 2606 states and 9720 transitions. [2024-11-09 05:29:58,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:29:58,535 INFO L276 IsEmpty]: Start isEmpty. Operand 2606 states and 9720 transitions. [2024-11-09 05:29:58,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 05:29:58,544 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:29:58,544 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:29:58,564 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-09 05:29:58,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2024-11-09 05:29:58,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (30)] Forceful destruction successful, exit code 0 [2024-11-09 05:29:59,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 05:29:59,149 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 05:29:59,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:29:59,149 INFO L85 PathProgramCache]: Analyzing trace with hash 2046895886, now seen corresponding path program 4 times [2024-11-09 05:29:59,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:29:59,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1982928807] [2024-11-09 05:29:59,150 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 05:29:59,150 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:29:59,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:29:59,151 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 05:29:59,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2024-11-09 05:29:59,253 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 05:29:59,254 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:29:59,255 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 05:29:59,257 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:29:59,282 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 05:29:59,282 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:29:59,282 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:29:59,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1982928807] [2024-11-09 05:29:59,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1982928807] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:29:59,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:29:59,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:29:59,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392327759] [2024-11-09 05:29:59,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:29:59,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:29:59,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:29:59,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:29:59,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:29:59,285 INFO L87 Difference]: Start difference. First operand 2606 states and 9720 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:30:00,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:30:00,274 INFO L93 Difference]: Finished difference Result 3968 states and 14641 transitions. [2024-11-09 05:30:00,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 05:30:00,275 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2024-11-09 05:30:00,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:30:00,290 INFO L225 Difference]: With dead ends: 3968 [2024-11-09 05:30:00,290 INFO L226 Difference]: Without dead ends: 3801 [2024-11-09 05:30:00,292 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:30:00,292 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 121 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:30:00,292 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 95 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 05:30:00,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3801 states. [2024-11-09 05:30:00,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3801 to 2597. [2024-11-09 05:30:00,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2597 states, 2596 states have (on average 3.7280431432973806) internal successors, (9678), 2596 states have internal predecessors, (9678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:30:00,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2597 states to 2597 states and 9678 transitions. [2024-11-09 05:30:00,634 INFO L78 Accepts]: Start accepts. Automaton has 2597 states and 9678 transitions. Word has length 39 [2024-11-09 05:30:00,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:30:00,634 INFO L471 AbstractCegarLoop]: Abstraction has 2597 states and 9678 transitions. [2024-11-09 05:30:00,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:30:00,635 INFO L276 IsEmpty]: Start isEmpty. Operand 2597 states and 9678 transitions. [2024-11-09 05:30:00,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-09 05:30:00,638 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:30:00,639 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:30:00,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2024-11-09 05:30:00,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:30:00,839 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 05:30:00,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:30:00,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1186416451, now seen corresponding path program 1 times [2024-11-09 05:30:00,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:30:00,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [905569425] [2024-11-09 05:30:00,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:30:00,840 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:30:00,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:30:00,841 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 05:30:00,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2024-11-09 05:30:00,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:30:00,978 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 05:30:00,979 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:30:01,029 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:30:01,029 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:30:01,030 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:30:01,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [905569425] [2024-11-09 05:30:01,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [905569425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:30:01,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:30:01,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:30:01,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052603054] [2024-11-09 05:30:01,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:30:01,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:30:01,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:30:01,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:30:01,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:30:01,031 INFO L87 Difference]: Start difference. First operand 2597 states and 9678 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:30:01,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:30:01,695 INFO L93 Difference]: Finished difference Result 4125 states and 15617 transitions. [2024-11-09 05:30:01,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:30:01,696 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2024-11-09 05:30:01,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:30:01,707 INFO L225 Difference]: With dead ends: 4125 [2024-11-09 05:30:01,707 INFO L226 Difference]: Without dead ends: 2114 [2024-11-09 05:30:01,710 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:30:01,710 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 61 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:30:01,710 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 84 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:30:01,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2114 states. [2024-11-09 05:30:01,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2114 to 2072. [2024-11-09 05:30:01,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2072 states, 2071 states have (on average 3.7498792853693867) internal successors, (7766), 2071 states have internal predecessors, (7766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:30:01,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2072 states to 2072 states and 7766 transitions. [2024-11-09 05:30:01,972 INFO L78 Accepts]: Start accepts. Automaton has 2072 states and 7766 transitions. Word has length 40 [2024-11-09 05:30:01,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:30:01,972 INFO L471 AbstractCegarLoop]: Abstraction has 2072 states and 7766 transitions. [2024-11-09 05:30:01,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:30:01,972 INFO L276 IsEmpty]: Start isEmpty. Operand 2072 states and 7766 transitions. [2024-11-09 05:30:01,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-09 05:30:01,976 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:30:01,976 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:30:01,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2024-11-09 05:30:02,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:30:02,176 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 05:30:02,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:30:02,177 INFO L85 PathProgramCache]: Analyzing trace with hash 76124891, now seen corresponding path program 1 times [2024-11-09 05:30:02,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:30:02,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1848261377] [2024-11-09 05:30:02,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:30:02,178 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:30:02,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:30:02,179 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 05:30:02,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2024-11-09 05:30:02,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:30:02,356 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 05:30:02,357 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:30:02,522 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:30:02,522 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:30:02,666 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:30:02,666 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:30:02,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1848261377] [2024-11-09 05:30:02,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1848261377] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:30:02,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1471378465] [2024-11-09 05:30:02,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:30:02,667 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:30:02,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:30:02,669 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:30:02,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2024-11-09 05:30:02,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:30:03,011 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 05:30:03,012 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:30:03,147 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:30:03,147 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:30:03,238 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:30:03,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1471378465] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:30:03,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217744588] [2024-11-09 05:30:03,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:30:03,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:30:03,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:30:03,240 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:30:03,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-09 05:30:03,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:30:03,371 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 05:30:03,372 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:30:03,595 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:30:03,595 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:30:03,697 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:30:03,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217744588] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:30:03,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 05:30:03,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 20 [2024-11-09 05:30:03,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830130968] [2024-11-09 05:30:03,698 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 05:30:03,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 05:30:03,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:30:03,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 05:30:03,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2024-11-09 05:30:03,700 INFO L87 Difference]: Start difference. First operand 2072 states and 7766 transitions. Second operand has 20 states, 20 states have (on average 7.4) internal successors, (148), 20 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:30:06,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:30:06,190 INFO L93 Difference]: Finished difference Result 4478 states and 16772 transitions. [2024-11-09 05:30:06,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-09 05:30:06,191 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 7.4) internal successors, (148), 20 states have internal predecessors, (148), 0 states have call successors, (0), 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 44 [2024-11-09 05:30:06,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:30:06,201 INFO L225 Difference]: With dead ends: 4478 [2024-11-09 05:30:06,201 INFO L226 Difference]: Without dead ends: 2172 [2024-11-09 05:30:06,205 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 241 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=225, Invalid=965, Unknown=0, NotChecked=0, Total=1190 [2024-11-09 05:30:06,205 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 273 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 1405 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 1433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-09 05:30:06,206 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 324 Invalid, 1433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1405 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-09 05:30:06,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2172 states. [2024-11-09 05:30:06,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2172 to 1494. [2024-11-09 05:30:06,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 1493 states have (on average 3.5405224380442064) internal successors, (5286), 1493 states have internal predecessors, (5286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:30:06,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 5286 transitions. [2024-11-09 05:30:06,372 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 5286 transitions. Word has length 44 [2024-11-09 05:30:06,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:30:06,373 INFO L471 AbstractCegarLoop]: Abstraction has 1494 states and 5286 transitions. [2024-11-09 05:30:06,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.4) internal successors, (148), 20 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:30:06,373 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 5286 transitions. [2024-11-09 05:30:06,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-09 05:30:06,375 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:30:06,376 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:30:06,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-11-09 05:30:06,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (35)] Forceful destruction successful, exit code 0 [2024-11-09 05:30:06,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2024-11-09 05:30:06,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:30:06,977 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 05:30:06,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:30:06,977 INFO L85 PathProgramCache]: Analyzing trace with hash 2116739771, now seen corresponding path program 1 times [2024-11-09 05:30:06,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:30:06,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1563035697] [2024-11-09 05:30:06,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:30:06,978 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:30:06,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:30:06,979 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 05:30:06,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd73bba-8f17-4477-91c2-823344aff86c/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process