./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e936ac1-c859-4477-bde5-ccc9002a0358/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e936ac1-c859-4477-bde5-ccc9002a0358/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e936ac1-c859-4477-bde5-ccc9002a0358/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e936ac1-c859-4477-bde5-ccc9002a0358/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e936ac1-c859-4477-bde5-ccc9002a0358/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e936ac1-c859-4477-bde5-ccc9002a0358/bin/utaipan-verify-NcY6lQBIFX --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 0f1f05cefb3bd84a08d6d936499ca6f215f6edf0bfbf58f9874b646b6408f7c8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 01:03:25,609 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 01:03:25,676 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e936ac1-c859-4477-bde5-ccc9002a0358/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-12 01:03:25,682 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 01:03:25,683 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 01:03:25,708 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 01:03:25,708 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 01:03:25,709 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 01:03:25,710 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 01:03:25,711 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 01:03:25,712 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 01:03:25,712 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 01:03:25,713 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 01:03:25,714 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 01:03:25,715 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 01:03:25,715 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 01:03:25,716 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 01:03:25,717 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 01:03:25,717 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 01:03:25,718 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 01:03:25,719 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 01:03:25,719 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 01:03:25,720 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 01:03:25,721 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 01:03:25,722 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 01:03:25,722 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 01:03:25,723 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 01:03:25,724 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 01:03:25,724 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 01:03:25,725 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 01:03:25,726 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 01:03:25,726 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 01:03:25,727 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 01:03:25,728 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 01:03:25,728 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 01:03:25,729 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 01:03:25,729 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:03:25,730 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 01:03:25,731 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 01:03:25,731 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 01:03:25,732 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 01:03:25,732 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 01:03:25,733 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 01:03:25,733 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 01:03:25,733 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 01:03:25,734 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_6e936ac1-c859-4477-bde5-ccc9002a0358/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e936ac1-c859-4477-bde5-ccc9002a0358/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f1f05cefb3bd84a08d6d936499ca6f215f6edf0bfbf58f9874b646b6408f7c8 [2023-11-12 01:03:25,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 01:03:26,001 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 01:03:26,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 01:03:26,005 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 01:03:26,006 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 01:03:26,007 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e936ac1-c859-4477-bde5-ccc9002a0358/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2023-11-12 01:03:29,196 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 01:03:29,476 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 01:03:29,485 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e936ac1-c859-4477-bde5-ccc9002a0358/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2023-11-12 01:03:29,498 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e936ac1-c859-4477-bde5-ccc9002a0358/bin/utaipan-verify-NcY6lQBIFX/data/d52fea283/74a7290bdbd84000b117855b58043dc1/FLAG5c84f5649 [2023-11-12 01:03:29,512 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e936ac1-c859-4477-bde5-ccc9002a0358/bin/utaipan-verify-NcY6lQBIFX/data/d52fea283/74a7290bdbd84000b117855b58043dc1 [2023-11-12 01:03:29,515 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 01:03:29,516 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 01:03:29,518 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 01:03:29,518 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 01:03:29,524 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 01:03:29,524 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:03:29" (1/1) ... [2023-11-12 01:03:29,526 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54ae7d49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:29, skipping insertion in model container [2023-11-12 01:03:29,526 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:03:29" (1/1) ... [2023-11-12 01:03:29,559 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 01:03:29,787 WARN L240 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_6e936ac1-c859-4477-bde5-ccc9002a0358/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c[5465,5478] [2023-11-12 01:03:29,795 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:03:29,805 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 01:03:29,839 WARN L240 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_6e936ac1-c859-4477-bde5-ccc9002a0358/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c[5465,5478] [2023-11-12 01:03:29,841 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:03:29,857 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:03:29,857 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:03:29,868 INFO L206 MainTranslator]: Completed translation [2023-11-12 01:03:29,869 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:29 WrapperNode [2023-11-12 01:03:29,869 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 01:03:29,870 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 01:03:29,871 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 01:03:29,871 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 01:03:29,880 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:29" (1/1) ... [2023-11-12 01:03:29,891 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:29" (1/1) ... [2023-11-12 01:03:29,921 INFO L138 Inliner]: procedures = 22, calls = 110, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 267 [2023-11-12 01:03:29,922 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 01:03:29,922 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 01:03:29,923 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 01:03:29,923 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 01:03:29,932 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:29" (1/1) ... [2023-11-12 01:03:29,932 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:29" (1/1) ... [2023-11-12 01:03:29,936 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:29" (1/1) ... [2023-11-12 01:03:29,937 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:29" (1/1) ... [2023-11-12 01:03:29,946 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:29" (1/1) ... [2023-11-12 01:03:29,949 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:29" (1/1) ... [2023-11-12 01:03:29,951 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:29" (1/1) ... [2023-11-12 01:03:29,953 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:29" (1/1) ... [2023-11-12 01:03:29,957 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 01:03:29,958 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 01:03:29,958 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 01:03:29,958 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 01:03:29,959 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:29" (1/1) ... [2023-11-12 01:03:29,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:03:29,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e936ac1-c859-4477-bde5-ccc9002a0358/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:03:29,997 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e936ac1-c859-4477-bde5-ccc9002a0358/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 01:03:30,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e936ac1-c859-4477-bde5-ccc9002a0358/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 01:03:30,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 01:03:30,058 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 01:03:30,058 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 01:03:30,058 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 01:03:30,058 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 01:03:30,058 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-12 01:03:30,059 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-12 01:03:30,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 01:03:30,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 01:03:30,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 01:03:30,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 01:03:30,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 01:03:30,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 01:03:30,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 01:03:30,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 01:03:30,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 01:03:30,062 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 01:03:30,164 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 01:03:30,166 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 01:03:30,550 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 01:03:30,748 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 01:03:30,748 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 01:03:30,756 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:03:30 BoogieIcfgContainer [2023-11-12 01:03:30,756 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 01:03:30,761 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 01:03:30,762 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 01:03:30,766 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 01:03:30,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 01:03:29" (1/3) ... [2023-11-12 01:03:30,767 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@251ff828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:03:30, skipping insertion in model container [2023-11-12 01:03:30,767 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:29" (2/3) ... [2023-11-12 01:03:30,769 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@251ff828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:03:30, skipping insertion in model container [2023-11-12 01:03:30,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:03:30" (3/3) ... [2023-11-12 01:03:30,771 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-3.wvr.c [2023-11-12 01:03:30,782 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 01:03:30,810 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 01:03:30,811 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 01:03:30,811 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 01:03:30,923 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-12 01:03:30,962 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-12 01:03:30,978 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 169 places, 161 transitions, 343 flow [2023-11-12 01:03:30,981 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 169 places, 161 transitions, 343 flow [2023-11-12 01:03:30,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 161 transitions, 343 flow [2023-11-12 01:03:31,073 INFO L124 PetriNetUnfolderBase]: 2/158 cut-off events. [2023-11-12 01:03:31,073 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-12 01:03:31,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 158 events. 2/158 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 116 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 115. Up to 2 conditions per place. [2023-11-12 01:03:31,085 INFO L119 LiptonReduction]: Number of co-enabled transitions 2430 [2023-11-12 01:03:35,779 INFO L134 LiptonReduction]: Checked pairs total: 15944 [2023-11-12 01:03:35,779 INFO L136 LiptonReduction]: Total number of compositions: 127 [2023-11-12 01:03:35,788 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 57 places, 47 transitions, 115 flow [2023-11-12 01:03:36,001 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3194 states, 3193 states have (on average 3.1453178828687753) internal successors, (10043), 3193 states have internal predecessors, (10043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:36,023 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 01:03:36,029 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6f17b1ed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 01:03:36,029 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-12 01:03:36,042 INFO L276 IsEmpty]: Start isEmpty. Operand has 3194 states, 3193 states have (on average 3.1453178828687753) internal successors, (10043), 3193 states have internal predecessors, (10043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:36,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-12 01:03:36,090 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:36,091 INFO L195 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] [2023-11-12 01:03:36,092 INFO L420 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)] === [2023-11-12 01:03:36,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:36,098 INFO L85 PathProgramCache]: Analyzing trace with hash 359006723, now seen corresponding path program 1 times [2023-11-12 01:03:36,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:36,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531833490] [2023-11-12 01:03:36,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:36,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:36,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:36,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:03:36,985 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:36,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531833490] [2023-11-12 01:03:36,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531833490] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:36,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:36,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 01:03:36,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645095841] [2023-11-12 01:03:36,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:36,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 01:03:36,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:37,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 01:03:37,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-12 01:03:37,040 INFO L87 Difference]: Start difference. First operand has 3194 states, 3193 states have (on average 3.1453178828687753) internal successors, (10043), 3193 states have internal predecessors, (10043), 0 states have call successors, (0), 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 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:37,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:37,788 INFO L93 Difference]: Finished difference Result 4141 states and 12340 transitions. [2023-11-12 01:03:37,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 01:03:37,791 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-11-12 01:03:37,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:37,854 INFO L225 Difference]: With dead ends: 4141 [2023-11-12 01:03:37,855 INFO L226 Difference]: Without dead ends: 3978 [2023-11-12 01:03:37,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2023-11-12 01:03:37,861 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 217 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:37,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 69 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-12 01:03:37,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3978 states. [2023-11-12 01:03:38,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3978 to 3246. [2023-11-12 01:03:38,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3246 states, 3245 states have (on average 3.126348228043143) internal successors, (10145), 3245 states have internal predecessors, (10145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:38,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3246 states to 3246 states and 10145 transitions. [2023-11-12 01:03:38,164 INFO L78 Accepts]: Start accepts. Automaton has 3246 states and 10145 transitions. Word has length 43 [2023-11-12 01:03:38,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:38,166 INFO L495 AbstractCegarLoop]: Abstraction has 3246 states and 10145 transitions. [2023-11-12 01:03:38,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:38,172 INFO L276 IsEmpty]: Start isEmpty. Operand 3246 states and 10145 transitions. [2023-11-12 01:03:38,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-12 01:03:38,188 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:38,189 INFO L195 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] [2023-11-12 01:03:38,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 01:03:38,189 INFO L420 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)] === [2023-11-12 01:03:38,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:38,190 INFO L85 PathProgramCache]: Analyzing trace with hash -511451389, now seen corresponding path program 2 times [2023-11-12 01:03:38,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:38,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790478026] [2023-11-12 01:03:38,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:38,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:38,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:38,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:03:38,819 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:38,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790478026] [2023-11-12 01:03:38,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790478026] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:38,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:38,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 01:03:38,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244586752] [2023-11-12 01:03:38,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:38,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 01:03:38,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:38,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 01:03:38,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-12 01:03:38,823 INFO L87 Difference]: Start difference. First operand 3246 states and 10145 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:39,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:39,298 INFO L93 Difference]: Finished difference Result 5074 states and 15867 transitions. [2023-11-12 01:03:39,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 01:03:39,299 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-11-12 01:03:39,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:39,343 INFO L225 Difference]: With dead ends: 5074 [2023-11-12 01:03:39,343 INFO L226 Difference]: Without dead ends: 4822 [2023-11-12 01:03:39,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-12 01:03:39,346 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 72 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:39,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 90 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 01:03:39,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4822 states. [2023-11-12 01:03:39,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4822 to 4450. [2023-11-12 01:03:39,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4450 states, 4449 states have (on average 3.140930546190155) internal successors, (13974), 4449 states have internal predecessors, (13974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:39,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4450 states to 4450 states and 13974 transitions. [2023-11-12 01:03:39,546 INFO L78 Accepts]: Start accepts. Automaton has 4450 states and 13974 transitions. Word has length 43 [2023-11-12 01:03:39,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:39,547 INFO L495 AbstractCegarLoop]: Abstraction has 4450 states and 13974 transitions. [2023-11-12 01:03:39,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:39,547 INFO L276 IsEmpty]: Start isEmpty. Operand 4450 states and 13974 transitions. [2023-11-12 01:03:39,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-12 01:03:39,561 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:39,562 INFO L195 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] [2023-11-12 01:03:39,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 01:03:39,562 INFO L420 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)] === [2023-11-12 01:03:39,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:39,563 INFO L85 PathProgramCache]: Analyzing trace with hash 906093535, now seen corresponding path program 3 times [2023-11-12 01:03:39,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:39,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754418453] [2023-11-12 01:03:39,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:39,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:39,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:40,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:03:40,141 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:40,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754418453] [2023-11-12 01:03:40,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754418453] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:40,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:40,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 01:03:40,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799212732] [2023-11-12 01:03:40,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:40,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 01:03:40,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:40,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 01:03:40,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:03:40,145 INFO L87 Difference]: Start difference. First operand 4450 states and 13974 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:40,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:40,404 INFO L93 Difference]: Finished difference Result 4940 states and 15509 transitions. [2023-11-12 01:03:40,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 01:03:40,405 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-11-12 01:03:40,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:40,451 INFO L225 Difference]: With dead ends: 4940 [2023-11-12 01:03:40,451 INFO L226 Difference]: Without dead ends: 4940 [2023-11-12 01:03:40,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:03:40,452 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 16 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:40,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 34 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 01:03:40,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4940 states. [2023-11-12 01:03:40,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4940 to 4582. [2023-11-12 01:03:40,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4582 states, 4581 states have (on average 3.1303208906352324) internal successors, (14340), 4581 states have internal predecessors, (14340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:40,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4582 states to 4582 states and 14340 transitions. [2023-11-12 01:03:40,637 INFO L78 Accepts]: Start accepts. Automaton has 4582 states and 14340 transitions. Word has length 43 [2023-11-12 01:03:40,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:40,637 INFO L495 AbstractCegarLoop]: Abstraction has 4582 states and 14340 transitions. [2023-11-12 01:03:40,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:40,638 INFO L276 IsEmpty]: Start isEmpty. Operand 4582 states and 14340 transitions. [2023-11-12 01:03:40,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-12 01:03:40,653 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:40,653 INFO L195 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] [2023-11-12 01:03:40,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 01:03:40,653 INFO L420 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)] === [2023-11-12 01:03:40,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:40,654 INFO L85 PathProgramCache]: Analyzing trace with hash 585208611, now seen corresponding path program 4 times [2023-11-12 01:03:40,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:40,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79787583] [2023-11-12 01:03:40,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:40,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:40,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:40,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:03:40,756 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:40,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79787583] [2023-11-12 01:03:40,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79787583] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:40,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:40,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:03:40,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279193591] [2023-11-12 01:03:40,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:40,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:03:40,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:40,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:03:40,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:03:40,759 INFO L87 Difference]: Start difference. First operand 4582 states and 14340 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:40,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:40,890 INFO L93 Difference]: Finished difference Result 4430 states and 13692 transitions. [2023-11-12 01:03:40,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:03:40,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-11-12 01:03:40,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:40,928 INFO L225 Difference]: With dead ends: 4430 [2023-11-12 01:03:40,929 INFO L226 Difference]: Without dead ends: 4430 [2023-11-12 01:03:40,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:03:40,930 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 23 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:40,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 23 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:03:40,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4430 states. [2023-11-12 01:03:41,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4430 to 4424. [2023-11-12 01:03:41,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4424 states, 4423 states have (on average 3.0913407189690254) internal successors, (13673), 4423 states have internal predecessors, (13673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:41,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4424 states to 4424 states and 13673 transitions. [2023-11-12 01:03:41,128 INFO L78 Accepts]: Start accepts. Automaton has 4424 states and 13673 transitions. Word has length 43 [2023-11-12 01:03:41,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:41,128 INFO L495 AbstractCegarLoop]: Abstraction has 4424 states and 13673 transitions. [2023-11-12 01:03:41,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:41,129 INFO L276 IsEmpty]: Start isEmpty. Operand 4424 states and 13673 transitions. [2023-11-12 01:03:41,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-12 01:03:41,143 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:41,143 INFO L195 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] [2023-11-12 01:03:41,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 01:03:41,143 INFO L420 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)] === [2023-11-12 01:03:41,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:41,144 INFO L85 PathProgramCache]: Analyzing trace with hash 2007398387, now seen corresponding path program 5 times [2023-11-12 01:03:41,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:41,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429752482] [2023-11-12 01:03:41,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:41,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:41,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:41,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:03:41,606 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:41,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429752482] [2023-11-12 01:03:41,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429752482] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:41,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:41,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 01:03:41,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547299591] [2023-11-12 01:03:41,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:41,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 01:03:41,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:41,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 01:03:41,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 01:03:41,609 INFO L87 Difference]: Start difference. First operand 4424 states and 13673 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:41,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:41,916 INFO L93 Difference]: Finished difference Result 6430 states and 19948 transitions. [2023-11-12 01:03:41,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 01:03:41,916 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-11-12 01:03:41,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:41,944 INFO L225 Difference]: With dead ends: 6430 [2023-11-12 01:03:41,945 INFO L226 Difference]: Without dead ends: 6310 [2023-11-12 01:03:41,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 01:03:41,946 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 36 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:41,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 52 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 01:03:42,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6310 states. [2023-11-12 01:03:42,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6310 to 4788. [2023-11-12 01:03:42,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4788 states, 4787 states have (on average 3.0735324838103195) internal successors, (14713), 4787 states have internal predecessors, (14713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:42,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4788 states to 4788 states and 14713 transitions. [2023-11-12 01:03:42,197 INFO L78 Accepts]: Start accepts. Automaton has 4788 states and 14713 transitions. Word has length 43 [2023-11-12 01:03:42,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:42,197 INFO L495 AbstractCegarLoop]: Abstraction has 4788 states and 14713 transitions. [2023-11-12 01:03:42,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:42,198 INFO L276 IsEmpty]: Start isEmpty. Operand 4788 states and 14713 transitions. [2023-11-12 01:03:42,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-12 01:03:42,216 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:42,216 INFO L195 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] [2023-11-12 01:03:42,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 01:03:42,217 INFO L420 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)] === [2023-11-12 01:03:42,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:42,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1225799285, now seen corresponding path program 6 times [2023-11-12 01:03:42,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:42,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831708965] [2023-11-12 01:03:42,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:42,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:42,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:42,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:03:42,899 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:42,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831708965] [2023-11-12 01:03:42,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831708965] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:42,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:42,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 01:03:42,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352054373] [2023-11-12 01:03:42,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:42,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 01:03:42,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:42,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 01:03:42,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-12 01:03:42,901 INFO L87 Difference]: Start difference. First operand 4788 states and 14713 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:43,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:43,397 INFO L93 Difference]: Finished difference Result 8008 states and 24743 transitions. [2023-11-12 01:03:43,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 01:03:43,397 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-11-12 01:03:43,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:43,430 INFO L225 Difference]: With dead ends: 8008 [2023-11-12 01:03:43,431 INFO L226 Difference]: Without dead ends: 7400 [2023-11-12 01:03:43,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-12 01:03:43,432 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 77 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:43,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 124 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 01:03:43,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7400 states. [2023-11-12 01:03:43,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7400 to 5226. [2023-11-12 01:03:43,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5226 states, 5225 states have (on average 3.090526315789474) internal successors, (16148), 5225 states have internal predecessors, (16148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:43,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5226 states to 5226 states and 16148 transitions. [2023-11-12 01:03:43,643 INFO L78 Accepts]: Start accepts. Automaton has 5226 states and 16148 transitions. Word has length 43 [2023-11-12 01:03:43,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:43,648 INFO L495 AbstractCegarLoop]: Abstraction has 5226 states and 16148 transitions. [2023-11-12 01:03:43,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:43,648 INFO L276 IsEmpty]: Start isEmpty. Operand 5226 states and 16148 transitions. [2023-11-12 01:03:43,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-12 01:03:43,663 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:43,664 INFO L195 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] [2023-11-12 01:03:43,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 01:03:43,664 INFO L420 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)] === [2023-11-12 01:03:43,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:43,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1269795511, now seen corresponding path program 7 times [2023-11-12 01:03:43,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:43,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265086971] [2023-11-12 01:03:43,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:43,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:43,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:43,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:03:43,779 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:43,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265086971] [2023-11-12 01:03:43,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265086971] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:43,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:43,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:03:43,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122655890] [2023-11-12 01:03:43,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:43,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:03:43,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:43,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:03:43,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:03:43,782 INFO L87 Difference]: Start difference. First operand 5226 states and 16148 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:43,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:43,909 INFO L93 Difference]: Finished difference Result 5090 states and 15538 transitions. [2023-11-12 01:03:43,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:03:43,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-11-12 01:03:43,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:43,932 INFO L225 Difference]: With dead ends: 5090 [2023-11-12 01:03:43,932 INFO L226 Difference]: Without dead ends: 5090 [2023-11-12 01:03:43,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:03:43,934 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 16 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:43,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 23 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:03:43,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5090 states. [2023-11-12 01:03:44,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5090 to 5076. [2023-11-12 01:03:44,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5076 states, 5075 states have (on average 3.055960591133005) internal successors, (15509), 5075 states have internal predecessors, (15509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:44,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5076 states to 5076 states and 15509 transitions. [2023-11-12 01:03:44,176 INFO L78 Accepts]: Start accepts. Automaton has 5076 states and 15509 transitions. Word has length 43 [2023-11-12 01:03:44,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:44,177 INFO L495 AbstractCegarLoop]: Abstraction has 5076 states and 15509 transitions. [2023-11-12 01:03:44,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:44,177 INFO L276 IsEmpty]: Start isEmpty. Operand 5076 states and 15509 transitions. [2023-11-12 01:03:44,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-12 01:03:44,196 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:44,196 INFO L195 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] [2023-11-12 01:03:44,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 01:03:44,197 INFO L420 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)] === [2023-11-12 01:03:44,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:44,197 INFO L85 PathProgramCache]: Analyzing trace with hash -873971865, now seen corresponding path program 8 times [2023-11-12 01:03:44,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:44,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762637320] [2023-11-12 01:03:44,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:44,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:44,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:44,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:03:44,661 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:44,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762637320] [2023-11-12 01:03:44,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762637320] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:44,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:44,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 01:03:44,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944924958] [2023-11-12 01:03:44,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:44,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 01:03:44,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:44,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 01:03:44,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 01:03:44,663 INFO L87 Difference]: Start difference. First operand 5076 states and 15509 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:44,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:44,937 INFO L93 Difference]: Finished difference Result 5210 states and 15838 transitions. [2023-11-12 01:03:44,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 01:03:44,938 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-11-12 01:03:44,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:44,958 INFO L225 Difference]: With dead ends: 5210 [2023-11-12 01:03:44,959 INFO L226 Difference]: Without dead ends: 5092 [2023-11-12 01:03:44,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 01:03:44,961 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 36 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:44,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 52 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 01:03:44,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5092 states. [2023-11-12 01:03:45,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5092 to 5066. [2023-11-12 01:03:45,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5066 states, 5065 states have (on average 3.054096742349457) internal successors, (15469), 5065 states have internal predecessors, (15469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:45,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5066 states to 5066 states and 15469 transitions. [2023-11-12 01:03:45,182 INFO L78 Accepts]: Start accepts. Automaton has 5066 states and 15469 transitions. Word has length 43 [2023-11-12 01:03:45,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:45,182 INFO L495 AbstractCegarLoop]: Abstraction has 5066 states and 15469 transitions. [2023-11-12 01:03:45,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:45,183 INFO L276 IsEmpty]: Start isEmpty. Operand 5066 states and 15469 transitions. [2023-11-12 01:03:45,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-12 01:03:45,198 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:45,198 INFO L195 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] [2023-11-12 01:03:45,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 01:03:45,199 INFO L420 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)] === [2023-11-12 01:03:45,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:45,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1947650743, now seen corresponding path program 9 times [2023-11-12 01:03:45,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:45,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59390875] [2023-11-12 01:03:45,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:45,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:45,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:45,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:03:45,847 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:45,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59390875] [2023-11-12 01:03:45,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59390875] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:45,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:45,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 01:03:45,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443748385] [2023-11-12 01:03:45,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:45,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 01:03:45,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:45,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 01:03:45,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-12 01:03:45,850 INFO L87 Difference]: Start difference. First operand 5066 states and 15469 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:46,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:46,229 INFO L93 Difference]: Finished difference Result 5258 states and 16013 transitions. [2023-11-12 01:03:46,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 01:03:46,229 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-11-12 01:03:46,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:46,251 INFO L225 Difference]: With dead ends: 5258 [2023-11-12 01:03:46,251 INFO L226 Difference]: Without dead ends: 5258 [2023-11-12 01:03:46,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-12 01:03:46,253 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 36 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:46,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 78 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 01:03:46,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5258 states. [2023-11-12 01:03:46,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5258 to 5184. [2023-11-12 01:03:46,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5184 states, 5183 states have (on average 3.046112290179433) internal successors, (15788), 5183 states have internal predecessors, (15788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:46,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5184 states to 5184 states and 15788 transitions. [2023-11-12 01:03:46,479 INFO L78 Accepts]: Start accepts. Automaton has 5184 states and 15788 transitions. Word has length 43 [2023-11-12 01:03:46,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:46,480 INFO L495 AbstractCegarLoop]: Abstraction has 5184 states and 15788 transitions. [2023-11-12 01:03:46,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:46,480 INFO L276 IsEmpty]: Start isEmpty. Operand 5184 states and 15788 transitions. [2023-11-12 01:03:46,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-12 01:03:46,496 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:46,496 INFO L195 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] [2023-11-12 01:03:46,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 01:03:46,496 INFO L420 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)] === [2023-11-12 01:03:46,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:46,497 INFO L85 PathProgramCache]: Analyzing trace with hash -2092829739, now seen corresponding path program 10 times [2023-11-12 01:03:46,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:46,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672389898] [2023-11-12 01:03:46,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:46,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:46,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:46,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:03:46,701 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:46,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672389898] [2023-11-12 01:03:46,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672389898] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:46,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:46,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 01:03:46,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501415789] [2023-11-12 01:03:46,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:46,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 01:03:46,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:46,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 01:03:46,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-12 01:03:46,704 INFO L87 Difference]: Start difference. First operand 5184 states and 15788 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:47,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:47,319 INFO L93 Difference]: Finished difference Result 6003 states and 17805 transitions. [2023-11-12 01:03:47,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 01:03:47,319 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-11-12 01:03:47,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:47,342 INFO L225 Difference]: With dead ends: 6003 [2023-11-12 01:03:47,343 INFO L226 Difference]: Without dead ends: 5790 [2023-11-12 01:03:47,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2023-11-12 01:03:47,344 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 201 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:47,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 72 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-12 01:03:47,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5790 states. [2023-11-12 01:03:47,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5790 to 5216. [2023-11-12 01:03:47,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5216 states, 5215 states have (on average 3.0354745925215725) internal successors, (15830), 5215 states have internal predecessors, (15830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:47,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5216 states to 5216 states and 15830 transitions. [2023-11-12 01:03:47,507 INFO L78 Accepts]: Start accepts. Automaton has 5216 states and 15830 transitions. Word has length 43 [2023-11-12 01:03:47,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:47,508 INFO L495 AbstractCegarLoop]: Abstraction has 5216 states and 15830 transitions. [2023-11-12 01:03:47,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:47,508 INFO L276 IsEmpty]: Start isEmpty. Operand 5216 states and 15830 transitions. [2023-11-12 01:03:47,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-12 01:03:47,523 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:47,523 INFO L195 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] [2023-11-12 01:03:47,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 01:03:47,524 INFO L420 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)] === [2023-11-12 01:03:47,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:47,525 INFO L85 PathProgramCache]: Analyzing trace with hash 580770133, now seen corresponding path program 11 times [2023-11-12 01:03:47,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:47,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540062673] [2023-11-12 01:03:47,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:47,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:48,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:03:48,072 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:48,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540062673] [2023-11-12 01:03:48,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540062673] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:48,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:48,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 01:03:48,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482360777] [2023-11-12 01:03:48,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:48,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 01:03:48,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:48,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 01:03:48,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-12 01:03:48,075 INFO L87 Difference]: Start difference. First operand 5216 states and 15830 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:48,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:48,474 INFO L93 Difference]: Finished difference Result 5360 states and 16216 transitions. [2023-11-12 01:03:48,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 01:03:48,475 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-11-12 01:03:48,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:48,496 INFO L225 Difference]: With dead ends: 5360 [2023-11-12 01:03:48,496 INFO L226 Difference]: Without dead ends: 5360 [2023-11-12 01:03:48,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-12 01:03:48,497 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 36 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:48,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 102 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 01:03:48,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5360 states. [2023-11-12 01:03:48,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5360 to 5272. [2023-11-12 01:03:48,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5272 states, 5271 states have (on average 3.0271295769303737) internal successors, (15956), 5271 states have internal predecessors, (15956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:48,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5272 states to 5272 states and 15956 transitions. [2023-11-12 01:03:48,653 INFO L78 Accepts]: Start accepts. Automaton has 5272 states and 15956 transitions. Word has length 43 [2023-11-12 01:03:48,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:48,654 INFO L495 AbstractCegarLoop]: Abstraction has 5272 states and 15956 transitions. [2023-11-12 01:03:48,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:48,655 INFO L276 IsEmpty]: Start isEmpty. Operand 5272 states and 15956 transitions. [2023-11-12 01:03:48,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-12 01:03:48,670 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:48,670 INFO L195 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] [2023-11-12 01:03:48,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 01:03:48,670 INFO L420 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)] === [2023-11-12 01:03:48,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:48,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1505940075, now seen corresponding path program 12 times [2023-11-12 01:03:48,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:48,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477937367] [2023-11-12 01:03:48,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:48,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:48,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:48,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:03:48,916 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:48,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477937367] [2023-11-12 01:03:48,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477937367] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:48,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:48,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 01:03:48,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641091215] [2023-11-12 01:03:48,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:48,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 01:03:48,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:48,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 01:03:48,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-12 01:03:48,919 INFO L87 Difference]: Start difference. First operand 5272 states and 15956 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:49,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:49,634 INFO L93 Difference]: Finished difference Result 5961 states and 17626 transitions. [2023-11-12 01:03:49,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 01:03:49,635 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-11-12 01:03:49,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:49,663 INFO L225 Difference]: With dead ends: 5961 [2023-11-12 01:03:49,663 INFO L226 Difference]: Without dead ends: 5688 [2023-11-12 01:03:49,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2023-11-12 01:03:49,664 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 176 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:49,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 71 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-12 01:03:49,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5688 states. [2023-11-12 01:03:49,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5688 to 5132. [2023-11-12 01:03:49,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5132 states, 5131 states have (on average 3.0360553498343403) internal successors, (15578), 5131 states have internal predecessors, (15578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:49,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5132 states to 5132 states and 15578 transitions. [2023-11-12 01:03:49,881 INFO L78 Accepts]: Start accepts. Automaton has 5132 states and 15578 transitions. Word has length 43 [2023-11-12 01:03:49,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:49,882 INFO L495 AbstractCegarLoop]: Abstraction has 5132 states and 15578 transitions. [2023-11-12 01:03:49,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:49,882 INFO L276 IsEmpty]: Start isEmpty. Operand 5132 states and 15578 transitions. [2023-11-12 01:03:49,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-12 01:03:49,902 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:49,902 INFO L195 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] [2023-11-12 01:03:49,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 01:03:49,903 INFO L420 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)] === [2023-11-12 01:03:49,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:49,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1254205281, now seen corresponding path program 13 times [2023-11-12 01:03:49,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:49,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604132502] [2023-11-12 01:03:49,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:49,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:49,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:50,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:03:50,417 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:50,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604132502] [2023-11-12 01:03:50,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604132502] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:50,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:50,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 01:03:50,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821424464] [2023-11-12 01:03:50,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:50,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 01:03:50,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:50,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 01:03:50,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-12 01:03:50,420 INFO L87 Difference]: Start difference. First operand 5132 states and 15578 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:50,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:50,806 INFO L93 Difference]: Finished difference Result 5074 states and 15138 transitions. [2023-11-12 01:03:50,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 01:03:50,807 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-11-12 01:03:50,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:50,828 INFO L225 Difference]: With dead ends: 5074 [2023-11-12 01:03:50,829 INFO L226 Difference]: Without dead ends: 5074 [2023-11-12 01:03:50,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-12 01:03:50,831 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 58 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:50,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 86 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 01:03:50,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5074 states. [2023-11-12 01:03:50,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5074 to 5014. [2023-11-12 01:03:50,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5014 states, 5013 states have (on average 2.9870337123478956) internal successors, (14974), 5013 states have internal predecessors, (14974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:50,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5014 states to 5014 states and 14974 transitions. [2023-11-12 01:03:50,986 INFO L78 Accepts]: Start accepts. Automaton has 5014 states and 14974 transitions. Word has length 43 [2023-11-12 01:03:50,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:50,987 INFO L495 AbstractCegarLoop]: Abstraction has 5014 states and 14974 transitions. [2023-11-12 01:03:50,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:50,988 INFO L276 IsEmpty]: Start isEmpty. Operand 5014 states and 14974 transitions. [2023-11-12 01:03:51,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-12 01:03:51,003 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:51,003 INFO L195 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] [2023-11-12 01:03:51,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-12 01:03:51,003 INFO L420 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)] === [2023-11-12 01:03:51,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:51,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1673881405, now seen corresponding path program 14 times [2023-11-12 01:03:51,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:51,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230822038] [2023-11-12 01:03:51,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:51,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:51,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:51,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:03:51,584 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:51,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230822038] [2023-11-12 01:03:51,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230822038] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:51,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:51,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 01:03:51,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380381882] [2023-11-12 01:03:51,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:51,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 01:03:51,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:51,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 01:03:51,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-12 01:03:51,587 INFO L87 Difference]: Start difference. First operand 5014 states and 14974 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:51,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:51,995 INFO L93 Difference]: Finished difference Result 5294 states and 15678 transitions. [2023-11-12 01:03:51,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 01:03:51,996 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-11-12 01:03:51,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:52,015 INFO L225 Difference]: With dead ends: 5294 [2023-11-12 01:03:52,015 INFO L226 Difference]: Without dead ends: 5286 [2023-11-12 01:03:52,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-12 01:03:52,016 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 44 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:52,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 108 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 01:03:52,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5286 states. [2023-11-12 01:03:52,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5286 to 5142. [2023-11-12 01:03:52,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5142 states, 5141 states have (on average 2.9807430460999806) internal successors, (15324), 5141 states have internal predecessors, (15324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:52,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5142 states to 5142 states and 15324 transitions. [2023-11-12 01:03:52,182 INFO L78 Accepts]: Start accepts. Automaton has 5142 states and 15324 transitions. Word has length 43 [2023-11-12 01:03:52,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:52,183 INFO L495 AbstractCegarLoop]: Abstraction has 5142 states and 15324 transitions. [2023-11-12 01:03:52,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:52,183 INFO L276 IsEmpty]: Start isEmpty. Operand 5142 states and 15324 transitions. [2023-11-12 01:03:52,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-12 01:03:52,195 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:52,195 INFO L195 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] [2023-11-12 01:03:52,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-12 01:03:52,196 INFO L420 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)] === [2023-11-12 01:03:52,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:52,196 INFO L85 PathProgramCache]: Analyzing trace with hash 719099709, now seen corresponding path program 15 times [2023-11-12 01:03:52,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:52,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693302874] [2023-11-12 01:03:52,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:52,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:52,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:52,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:03:52,766 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:52,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693302874] [2023-11-12 01:03:52,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693302874] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:52,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:52,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 01:03:52,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918714218] [2023-11-12 01:03:52,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:52,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 01:03:52,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:52,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 01:03:52,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-12 01:03:52,769 INFO L87 Difference]: Start difference. First operand 5142 states and 15324 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:53,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:53,255 INFO L93 Difference]: Finished difference Result 5336 states and 15811 transitions. [2023-11-12 01:03:53,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 01:03:53,256 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-11-12 01:03:53,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:53,276 INFO L225 Difference]: With dead ends: 5336 [2023-11-12 01:03:53,277 INFO L226 Difference]: Without dead ends: 5056 [2023-11-12 01:03:53,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-12 01:03:53,278 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 39 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:53,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 105 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 01:03:53,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5056 states. [2023-11-12 01:03:53,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5056 to 5036. [2023-11-12 01:03:53,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5036 states, 5035 states have (on average 2.98291956305859) internal successors, (15019), 5035 states have internal predecessors, (15019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:53,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5036 states to 5036 states and 15019 transitions. [2023-11-12 01:03:53,436 INFO L78 Accepts]: Start accepts. Automaton has 5036 states and 15019 transitions. Word has length 43 [2023-11-12 01:03:53,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:53,436 INFO L495 AbstractCegarLoop]: Abstraction has 5036 states and 15019 transitions. [2023-11-12 01:03:53,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:53,437 INFO L276 IsEmpty]: Start isEmpty. Operand 5036 states and 15019 transitions. [2023-11-12 01:03:53,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-12 01:03:53,449 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:53,449 INFO L195 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] [2023-11-12 01:03:53,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-12 01:03:53,450 INFO L420 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)] === [2023-11-12 01:03:53,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:53,451 INFO L85 PathProgramCache]: Analyzing trace with hash -484107013, now seen corresponding path program 16 times [2023-11-12 01:03:53,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:53,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531336101] [2023-11-12 01:03:53,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:53,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:53,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:54,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:03:54,024 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:54,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531336101] [2023-11-12 01:03:54,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531336101] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:54,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:54,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 01:03:54,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289828993] [2023-11-12 01:03:54,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:54,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 01:03:54,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:54,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 01:03:54,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-12 01:03:54,030 INFO L87 Difference]: Start difference. First operand 5036 states and 15019 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:54,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:54,452 INFO L93 Difference]: Finished difference Result 5274 states and 15624 transitions. [2023-11-12 01:03:54,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 01:03:54,453 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-11-12 01:03:54,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:54,468 INFO L225 Difference]: With dead ends: 5274 [2023-11-12 01:03:54,468 INFO L226 Difference]: Without dead ends: 5266 [2023-11-12 01:03:54,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-12 01:03:54,469 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 40 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:54,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 123 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 01:03:54,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5266 states. [2023-11-12 01:03:54,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5266 to 5136. [2023-11-12 01:03:54,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5136 states, 5135 states have (on average 2.9801363193768258) internal successors, (15303), 5135 states have internal predecessors, (15303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:54,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5136 states to 5136 states and 15303 transitions. [2023-11-12 01:03:54,621 INFO L78 Accepts]: Start accepts. Automaton has 5136 states and 15303 transitions. Word has length 43 [2023-11-12 01:03:54,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:54,622 INFO L495 AbstractCegarLoop]: Abstraction has 5136 states and 15303 transitions. [2023-11-12 01:03:54,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:54,622 INFO L276 IsEmpty]: Start isEmpty. Operand 5136 states and 15303 transitions. [2023-11-12 01:03:54,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-12 01:03:54,633 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:54,633 INFO L195 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] [2023-11-12 01:03:54,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-12 01:03:54,634 INFO L420 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)] === [2023-11-12 01:03:54,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:54,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1438888709, now seen corresponding path program 17 times [2023-11-12 01:03:54,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:54,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584977855] [2023-11-12 01:03:54,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:54,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:54,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:55,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:03:55,294 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:55,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584977855] [2023-11-12 01:03:55,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584977855] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:55,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:55,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 01:03:55,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749204357] [2023-11-12 01:03:55,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:55,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 01:03:55,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:55,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 01:03:55,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-12 01:03:55,298 INFO L87 Difference]: Start difference. First operand 5136 states and 15303 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:55,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:55,718 INFO L93 Difference]: Finished difference Result 5244 states and 15553 transitions. [2023-11-12 01:03:55,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 01:03:55,719 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-11-12 01:03:55,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:55,733 INFO L225 Difference]: With dead ends: 5244 [2023-11-12 01:03:55,733 INFO L226 Difference]: Without dead ends: 5052 [2023-11-12 01:03:55,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-12 01:03:55,734 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 38 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:55,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 110 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 01:03:55,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5052 states. [2023-11-12 01:03:55,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5052 to 5034. [2023-11-12 01:03:55,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5034 states, 5033 states have (on average 2.9829127756805085) internal successors, (15013), 5033 states have internal predecessors, (15013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:55,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5034 states to 5034 states and 15013 transitions. [2023-11-12 01:03:55,870 INFO L78 Accepts]: Start accepts. Automaton has 5034 states and 15013 transitions. Word has length 43 [2023-11-12 01:03:55,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:55,871 INFO L495 AbstractCegarLoop]: Abstraction has 5034 states and 15013 transitions. [2023-11-12 01:03:55,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:55,871 INFO L276 IsEmpty]: Start isEmpty. Operand 5034 states and 15013 transitions. [2023-11-12 01:03:55,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-12 01:03:55,881 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:55,881 INFO L195 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] [2023-11-12 01:03:55,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-12 01:03:55,882 INFO L420 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)] === [2023-11-12 01:03:55,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:55,882 INFO L85 PathProgramCache]: Analyzing trace with hash 97324683, now seen corresponding path program 18 times [2023-11-12 01:03:55,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:55,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278577452] [2023-11-12 01:03:55,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:55,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:55,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:55,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:03:55,959 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:55,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278577452] [2023-11-12 01:03:55,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278577452] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:55,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:55,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:03:55,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703854022] [2023-11-12 01:03:55,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:55,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:03:55,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:55,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:03:55,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:03:55,962 INFO L87 Difference]: Start difference. First operand 5034 states and 15013 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:56,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:56,062 INFO L93 Difference]: Finished difference Result 4978 states and 14725 transitions. [2023-11-12 01:03:56,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:03:56,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-11-12 01:03:56,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:56,071 INFO L225 Difference]: With dead ends: 4978 [2023-11-12 01:03:56,071 INFO L226 Difference]: Without dead ends: 4978 [2023-11-12 01:03:56,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:03:56,072 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 18 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:56,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 23 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:03:56,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4978 states. [2023-11-12 01:03:56,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4978 to 4978. [2023-11-12 01:03:56,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4978 states, 4977 states have (on average 2.9586096041792245) internal successors, (14725), 4977 states have internal predecessors, (14725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:56,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4978 states to 4978 states and 14725 transitions. [2023-11-12 01:03:56,202 INFO L78 Accepts]: Start accepts. Automaton has 4978 states and 14725 transitions. Word has length 43 [2023-11-12 01:03:56,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:56,203 INFO L495 AbstractCegarLoop]: Abstraction has 4978 states and 14725 transitions. [2023-11-12 01:03:56,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:56,203 INFO L276 IsEmpty]: Start isEmpty. Operand 4978 states and 14725 transitions. [2023-11-12 01:03:56,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-12 01:03:56,212 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:56,213 INFO L195 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] [2023-11-12 01:03:56,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-12 01:03:56,213 INFO L420 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)] === [2023-11-12 01:03:56,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:56,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1977822641, now seen corresponding path program 19 times [2023-11-12 01:03:56,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:56,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227136716] [2023-11-12 01:03:56,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:56,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:56,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:56,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:03:56,647 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:56,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227136716] [2023-11-12 01:03:56,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227136716] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:56,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:56,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 01:03:56,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115152072] [2023-11-12 01:03:56,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:56,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 01:03:56,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:56,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 01:03:56,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:03:56,650 INFO L87 Difference]: Start difference. First operand 4978 states and 14725 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:56,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:56,843 INFO L93 Difference]: Finished difference Result 4884 states and 14402 transitions. [2023-11-12 01:03:56,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 01:03:56,843 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-11-12 01:03:56,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:56,857 INFO L225 Difference]: With dead ends: 4884 [2023-11-12 01:03:56,857 INFO L226 Difference]: Without dead ends: 4884 [2023-11-12 01:03:56,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:03:56,859 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 16 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:56,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 28 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 01:03:56,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4884 states. [2023-11-12 01:03:56,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4884 to 4836. [2023-11-12 01:03:56,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4836 states, 4835 states have (on average 2.9499482936918304) internal successors, (14263), 4835 states have internal predecessors, (14263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:57,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4836 states to 4836 states and 14263 transitions. [2023-11-12 01:03:57,015 INFO L78 Accepts]: Start accepts. Automaton has 4836 states and 14263 transitions. Word has length 43 [2023-11-12 01:03:57,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:57,015 INFO L495 AbstractCegarLoop]: Abstraction has 4836 states and 14263 transitions. [2023-11-12 01:03:57,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:57,016 INFO L276 IsEmpty]: Start isEmpty. Operand 4836 states and 14263 transitions. [2023-11-12 01:03:57,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-12 01:03:57,025 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:57,025 INFO L195 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] [2023-11-12 01:03:57,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-12 01:03:57,025 INFO L420 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)] === [2023-11-12 01:03:57,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:57,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1215839803, now seen corresponding path program 20 times [2023-11-12 01:03:57,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:57,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904005118] [2023-11-12 01:03:57,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:57,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:57,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:57,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:03:57,390 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:57,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904005118] [2023-11-12 01:03:57,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904005118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:57,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:57,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 01:03:57,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324258706] [2023-11-12 01:03:57,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:57,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 01:03:57,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:57,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 01:03:57,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 01:03:57,393 INFO L87 Difference]: Start difference. First operand 4836 states and 14263 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:57,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:57,622 INFO L93 Difference]: Finished difference Result 5394 states and 15869 transitions. [2023-11-12 01:03:57,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 01:03:57,623 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-11-12 01:03:57,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:57,637 INFO L225 Difference]: With dead ends: 5394 [2023-11-12 01:03:57,638 INFO L226 Difference]: Without dead ends: 5274 [2023-11-12 01:03:57,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 01:03:57,639 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 36 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:57,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 38 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 01:03:57,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5274 states. [2023-11-12 01:03:57,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5274 to 4962. [2023-11-12 01:03:57,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4962 states, 4961 states have (on average 2.9514210844587785) internal successors, (14642), 4961 states have internal predecessors, (14642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:57,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4962 states to 4962 states and 14642 transitions. [2023-11-12 01:03:57,794 INFO L78 Accepts]: Start accepts. Automaton has 4962 states and 14642 transitions. Word has length 43 [2023-11-12 01:03:57,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:57,794 INFO L495 AbstractCegarLoop]: Abstraction has 4962 states and 14642 transitions. [2023-11-12 01:03:57,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:57,794 INFO L276 IsEmpty]: Start isEmpty. Operand 4962 states and 14642 transitions. [2023-11-12 01:03:57,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-12 01:03:57,805 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:57,805 INFO L195 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] [2023-11-12 01:03:57,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-12 01:03:57,805 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-12 01:03:57,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:57,806 INFO L85 PathProgramCache]: Analyzing trace with hash -154070179, now seen corresponding path program 21 times [2023-11-12 01:03:57,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:57,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641072905] [2023-11-12 01:03:57,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:57,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:57,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:58,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:03:58,318 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:58,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641072905] [2023-11-12 01:03:58,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641072905] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:58,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:58,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 01:03:58,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751837632] [2023-11-12 01:03:58,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:58,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 01:03:58,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:58,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 01:03:58,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-12 01:03:58,321 INFO L87 Difference]: Start difference. First operand 4962 states and 14642 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:58,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:58,796 INFO L93 Difference]: Finished difference Result 7832 states and 23582 transitions. [2023-11-12 01:03:58,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 01:03:58,796 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-11-12 01:03:58,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:58,813 INFO L225 Difference]: With dead ends: 7832 [2023-11-12 01:03:58,813 INFO L226 Difference]: Without dead ends: 7368 [2023-11-12 01:03:58,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-12 01:03:58,814 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 97 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:58,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 100 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 01:03:58,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7368 states. [2023-11-12 01:03:58,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7368 to 5304. [2023-11-12 01:03:58,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5304 states, 5303 states have (on average 2.9734112766358667) internal successors, (15768), 5303 states have internal predecessors, (15768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:58,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5304 states to 5304 states and 15768 transitions. [2023-11-12 01:03:58,988 INFO L78 Accepts]: Start accepts. Automaton has 5304 states and 15768 transitions. Word has length 43 [2023-11-12 01:03:58,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:58,990 INFO L495 AbstractCegarLoop]: Abstraction has 5304 states and 15768 transitions. [2023-11-12 01:03:58,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:58,991 INFO L276 IsEmpty]: Start isEmpty. Operand 5304 states and 15768 transitions. [2023-11-12 01:03:59,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-12 01:03:59,002 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:59,002 INFO L195 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] [2023-11-12 01:03:59,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-12 01:03:59,003 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-12 01:03:59,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:59,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1631944031, now seen corresponding path program 22 times [2023-11-12 01:03:59,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:59,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130609050] [2023-11-12 01:03:59,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:59,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:59,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:59,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:03:59,569 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:59,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130609050] [2023-11-12 01:03:59,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130609050] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:59,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:59,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 01:03:59,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000280076] [2023-11-12 01:03:59,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:59,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 01:03:59,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:59,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 01:03:59,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-12 01:03:59,572 INFO L87 Difference]: Start difference. First operand 5304 states and 15768 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:04:00,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:04:00,237 INFO L93 Difference]: Finished difference Result 7990 states and 23736 transitions. [2023-11-12 01:04:00,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 01:04:00,238 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-11-12 01:04:00,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:04:00,260 INFO L225 Difference]: With dead ends: 7990 [2023-11-12 01:04:00,261 INFO L226 Difference]: Without dead ends: 7690 [2023-11-12 01:04:00,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-12 01:04:00,262 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 94 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-12 01:04:00,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 164 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 907 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-12 01:04:00,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7690 states. [2023-11-12 01:04:00,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7690 to 5366. [2023-11-12 01:04:00,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5366 states, 5365 states have (on average 2.9711090400745572) internal successors, (15940), 5365 states have internal predecessors, (15940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:04:00,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5366 states to 5366 states and 15940 transitions. [2023-11-12 01:04:00,435 INFO L78 Accepts]: Start accepts. Automaton has 5366 states and 15940 transitions. Word has length 43 [2023-11-12 01:04:00,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:04:00,436 INFO L495 AbstractCegarLoop]: Abstraction has 5366 states and 15940 transitions. [2023-11-12 01:04:00,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:04:00,436 INFO L276 IsEmpty]: Start isEmpty. Operand 5366 states and 15940 transitions. [2023-11-12 01:04:00,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-12 01:04:00,448 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:04:00,448 INFO L195 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] [2023-11-12 01:04:00,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-12 01:04:00,449 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-12 01:04:00,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:04:00,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1675064127, now seen corresponding path program 23 times [2023-11-12 01:04:00,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:04:00,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602660212] [2023-11-12 01:04:00,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:04:00,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:04:00,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:04:00,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:04:00,868 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:04:00,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602660212] [2023-11-12 01:04:00,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602660212] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:04:00,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:04:00,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 01:04:00,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336779877] [2023-11-12 01:04:00,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:04:00,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 01:04:00,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:04:00,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 01:04:00,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 01:04:00,872 INFO L87 Difference]: Start difference. First operand 5366 states and 15940 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:04:01,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:04:01,125 INFO L93 Difference]: Finished difference Result 5986 states and 17743 transitions. [2023-11-12 01:04:01,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 01:04:01,125 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-11-12 01:04:01,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:04:01,138 INFO L225 Difference]: With dead ends: 5986 [2023-11-12 01:04:01,138 INFO L226 Difference]: Without dead ends: 5852 [2023-11-12 01:04:01,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 01:04:01,139 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 39 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 01:04:01,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 52 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 01:04:01,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5852 states. [2023-11-12 01:04:01,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5852 to 5358. [2023-11-12 01:04:01,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5358 states, 5357 states have (on average 2.9708792234459587) internal successors, (15915), 5357 states have internal predecessors, (15915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:04:01,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5358 states to 5358 states and 15915 transitions. [2023-11-12 01:04:01,287 INFO L78 Accepts]: Start accepts. Automaton has 5358 states and 15915 transitions. Word has length 43 [2023-11-12 01:04:01,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:04:01,288 INFO L495 AbstractCegarLoop]: Abstraction has 5358 states and 15915 transitions. [2023-11-12 01:04:01,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:04:01,288 INFO L276 IsEmpty]: Start isEmpty. Operand 5358 states and 15915 transitions. [2023-11-12 01:04:01,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-12 01:04:01,299 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:04:01,299 INFO L195 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] [2023-11-12 01:04:01,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-12 01:04:01,300 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-12 01:04:01,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:04:01,300 INFO L85 PathProgramCache]: Analyzing trace with hash -25272467, now seen corresponding path program 24 times [2023-11-12 01:04:01,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:04:01,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747276222] [2023-11-12 01:04:01,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:04:01,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:04:01,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:04:01,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:04:01,650 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:04:01,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747276222] [2023-11-12 01:04:01,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747276222] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:04:01,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:04:01,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 01:04:01,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960024990] [2023-11-12 01:04:01,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:04:01,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 01:04:01,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:04:01,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 01:04:01,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 01:04:01,656 INFO L87 Difference]: Start difference. First operand 5358 states and 15915 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:04:01,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:04:01,928 INFO L93 Difference]: Finished difference Result 5814 states and 17100 transitions. [2023-11-12 01:04:01,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 01:04:01,934 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-11-12 01:04:01,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:04:01,950 INFO L225 Difference]: With dead ends: 5814 [2023-11-12 01:04:01,951 INFO L226 Difference]: Without dead ends: 5716 [2023-11-12 01:04:01,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 01:04:01,953 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 42 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 01:04:01,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 52 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 01:04:01,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5716 states. [2023-11-12 01:04:02,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5716 to 5354. [2023-11-12 01:04:02,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5354 states, 5353 states have (on average 2.9671212404259295) internal successors, (15883), 5353 states have internal predecessors, (15883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:04:02,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5354 states to 5354 states and 15883 transitions. [2023-11-12 01:04:02,094 INFO L78 Accepts]: Start accepts. Automaton has 5354 states and 15883 transitions. Word has length 43 [2023-11-12 01:04:02,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:04:02,094 INFO L495 AbstractCegarLoop]: Abstraction has 5354 states and 15883 transitions. [2023-11-12 01:04:02,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:04:02,094 INFO L276 IsEmpty]: Start isEmpty. Operand 5354 states and 15883 transitions. [2023-11-12 01:04:02,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-12 01:04:02,106 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:04:02,106 INFO L195 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] [2023-11-12 01:04:02,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-12 01:04:02,106 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-12 01:04:02,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:04:02,107 INFO L85 PathProgramCache]: Analyzing trace with hash -528886795, now seen corresponding path program 25 times [2023-11-12 01:04:02,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:04:02,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846704852] [2023-11-12 01:04:02,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:04:02,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:04:02,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:04:02,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:04:02,493 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:04:02,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846704852] [2023-11-12 01:04:02,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846704852] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:04:02,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:04:02,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 01:04:02,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756456238] [2023-11-12 01:04:02,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:04:02,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 01:04:02,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:04:02,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 01:04:02,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 01:04:02,495 INFO L87 Difference]: Start difference. First operand 5354 states and 15883 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:04:02,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:04:02,746 INFO L93 Difference]: Finished difference Result 6056 states and 17867 transitions. [2023-11-12 01:04:02,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 01:04:02,747 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-11-12 01:04:02,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:04:02,759 INFO L225 Difference]: With dead ends: 6056 [2023-11-12 01:04:02,759 INFO L226 Difference]: Without dead ends: 5952 [2023-11-12 01:04:02,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 01:04:02,760 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 51 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 01:04:02,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 42 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 01:04:02,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5952 states. [2023-11-12 01:04:02,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5952 to 5354. [2023-11-12 01:04:02,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5354 states, 5353 states have (on average 2.9667476181580423) internal successors, (15881), 5353 states have internal predecessors, (15881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:04:02,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5354 states to 5354 states and 15881 transitions. [2023-11-12 01:04:02,901 INFO L78 Accepts]: Start accepts. Automaton has 5354 states and 15881 transitions. Word has length 43 [2023-11-12 01:04:02,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:04:02,901 INFO L495 AbstractCegarLoop]: Abstraction has 5354 states and 15881 transitions. [2023-11-12 01:04:02,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:04:02,901 INFO L276 IsEmpty]: Start isEmpty. Operand 5354 states and 15881 transitions. [2023-11-12 01:04:02,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-12 01:04:02,914 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:04:02,915 INFO L195 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] [2023-11-12 01:04:02,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-12 01:04:02,915 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-12 01:04:02,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:04:02,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1178261621, now seen corresponding path program 26 times [2023-11-12 01:04:02,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:04:02,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479761002] [2023-11-12 01:04:02,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:04:02,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:04:02,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:04:03,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:04:03,128 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:04:03,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479761002] [2023-11-12 01:04:03,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479761002] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:04:03,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:04:03,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 01:04:03,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663501010] [2023-11-12 01:04:03,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:04:03,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 01:04:03,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:04:03,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 01:04:03,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-12 01:04:03,131 INFO L87 Difference]: Start difference. First operand 5354 states and 15881 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:04:03,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:04:03,799 INFO L93 Difference]: Finished difference Result 6177 states and 17884 transitions. [2023-11-12 01:04:03,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 01:04:03,799 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-11-12 01:04:03,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:04:03,817 INFO L225 Difference]: With dead ends: 6177 [2023-11-12 01:04:03,817 INFO L226 Difference]: Without dead ends: 6032 [2023-11-12 01:04:03,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2023-11-12 01:04:03,818 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 195 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-12 01:04:03,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 69 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-12 01:04:03,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6032 states. [2023-11-12 01:04:03,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6032 to 5406. [2023-11-12 01:04:03,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5406 states, 5405 states have (on average 2.9574468085106385) internal successors, (15985), 5405 states have internal predecessors, (15985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:04:03,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5406 states to 5406 states and 15985 transitions. [2023-11-12 01:04:03,981 INFO L78 Accepts]: Start accepts. Automaton has 5406 states and 15985 transitions. Word has length 43 [2023-11-12 01:04:03,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:04:03,982 INFO L495 AbstractCegarLoop]: Abstraction has 5406 states and 15985 transitions. [2023-11-12 01:04:03,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:04:03,982 INFO L276 IsEmpty]: Start isEmpty. Operand 5406 states and 15985 transitions. [2023-11-12 01:04:03,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-12 01:04:03,995 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:04:03,995 INFO L195 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] [2023-11-12 01:04:03,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-12 01:04:03,995 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-12 01:04:03,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:04:03,996 INFO L85 PathProgramCache]: Analyzing trace with hash -2147043755, now seen corresponding path program 27 times [2023-11-12 01:04:03,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:04:03,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692955940] [2023-11-12 01:04:03,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:04:03,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:04:04,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:04:04,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:04:04,462 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:04:04,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692955940] [2023-11-12 01:04:04,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692955940] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:04:04,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:04:04,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 01:04:04,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101360974] [2023-11-12 01:04:04,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:04:04,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 01:04:04,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:04:04,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 01:04:04,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 01:04:04,465 INFO L87 Difference]: Start difference. First operand 5406 states and 15985 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:04:04,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:04:04,838 INFO L93 Difference]: Finished difference Result 6086 states and 17852 transitions. [2023-11-12 01:04:04,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 01:04:04,839 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-11-12 01:04:04,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:04:04,859 INFO L225 Difference]: With dead ends: 6086 [2023-11-12 01:04:04,859 INFO L226 Difference]: Without dead ends: 5762 [2023-11-12 01:04:04,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 01:04:04,861 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 39 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 01:04:04,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 46 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 01:04:04,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5762 states. [2023-11-12 01:04:05,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5762 to 4946. [2023-11-12 01:04:05,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4946 states, 4945 states have (on average 2.967037411526795) internal successors, (14672), 4945 states have internal predecessors, (14672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:04:05,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4946 states to 4946 states and 14672 transitions. [2023-11-12 01:04:05,040 INFO L78 Accepts]: Start accepts. Automaton has 4946 states and 14672 transitions. Word has length 43 [2023-11-12 01:04:05,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:04:05,040 INFO L495 AbstractCegarLoop]: Abstraction has 4946 states and 14672 transitions. [2023-11-12 01:04:05,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:04:05,041 INFO L276 IsEmpty]: Start isEmpty. Operand 4946 states and 14672 transitions. [2023-11-12 01:04:05,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-12 01:04:05,055 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:04:05,056 INFO L195 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] [2023-11-12 01:04:05,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-12 01:04:05,056 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-12 01:04:05,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:04:05,057 INFO L85 PathProgramCache]: Analyzing trace with hash -93984447, now seen corresponding path program 28 times [2023-11-12 01:04:05,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:04:05,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912686206] [2023-11-12 01:04:05,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:04:05,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:04:05,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:04:05,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:04:05,610 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:04:05,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912686206] [2023-11-12 01:04:05,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912686206] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:04:05,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:04:05,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 01:04:05,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241162720] [2023-11-12 01:04:05,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:04:05,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 01:04:05,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:04:05,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 01:04:05,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 01:04:05,613 INFO L87 Difference]: Start difference. First operand 4946 states and 14672 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:04:05,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:04:05,964 INFO L93 Difference]: Finished difference Result 5204 states and 15379 transitions. [2023-11-12 01:04:05,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 01:04:05,965 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-11-12 01:04:05,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:04:05,976 INFO L225 Difference]: With dead ends: 5204 [2023-11-12 01:04:05,976 INFO L226 Difference]: Without dead ends: 5204 [2023-11-12 01:04:05,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 01:04:05,977 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 37 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 01:04:05,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 86 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 01:04:05,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5204 states. [2023-11-12 01:04:06,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5204 to 4966. [2023-11-12 01:04:06,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4966 states, 4965 states have (on average 2.963947633434038) internal successors, (14716), 4965 states have internal predecessors, (14716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:04:06,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4966 states to 4966 states and 14716 transitions. [2023-11-12 01:04:06,095 INFO L78 Accepts]: Start accepts. Automaton has 4966 states and 14716 transitions. Word has length 43 [2023-11-12 01:04:06,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:04:06,096 INFO L495 AbstractCegarLoop]: Abstraction has 4966 states and 14716 transitions. [2023-11-12 01:04:06,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:04:06,096 INFO L276 IsEmpty]: Start isEmpty. Operand 4966 states and 14716 transitions. [2023-11-12 01:04:06,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-12 01:04:06,108 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:04:06,108 INFO L195 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] [2023-11-12 01:04:06,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-12 01:04:06,109 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-12 01:04:06,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:04:06,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1460865057, now seen corresponding path program 29 times [2023-11-12 01:04:06,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:04:06,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764462366] [2023-11-12 01:04:06,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:04:06,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:04:06,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:04:06,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:04:06,532 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:04:06,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764462366] [2023-11-12 01:04:06,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764462366] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:04:06,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:04:06,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 01:04:06,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431764751] [2023-11-12 01:04:06,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:04:06,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 01:04:06,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:04:06,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 01:04:06,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-12 01:04:06,536 INFO L87 Difference]: Start difference. First operand 4966 states and 14716 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:04:06,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:04:06,889 INFO L93 Difference]: Finished difference Result 6074 states and 17986 transitions. [2023-11-12 01:04:06,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 01:04:06,889 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-11-12 01:04:06,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:04:06,907 INFO L225 Difference]: With dead ends: 6074 [2023-11-12 01:04:06,907 INFO L226 Difference]: Without dead ends: 5610 [2023-11-12 01:04:06,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-12 01:04:06,908 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 42 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 01:04:06,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 66 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 01:04:06,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5610 states. [2023-11-12 01:04:07,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5610 to 5518. [2023-11-12 01:04:07,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5518 states, 5517 states have (on average 2.969729925684249) internal successors, (16384), 5517 states have internal predecessors, (16384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:04:07,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5518 states to 5518 states and 16384 transitions. [2023-11-12 01:04:07,060 INFO L78 Accepts]: Start accepts. Automaton has 5518 states and 16384 transitions. Word has length 43 [2023-11-12 01:04:07,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:04:07,061 INFO L495 AbstractCegarLoop]: Abstraction has 5518 states and 16384 transitions. [2023-11-12 01:04:07,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:04:07,061 INFO L276 IsEmpty]: Start isEmpty. Operand 5518 states and 16384 transitions. [2023-11-12 01:04:07,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-12 01:04:07,074 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:04:07,074 INFO L195 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] [2023-11-12 01:04:07,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-12 01:04:07,076 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-12 01:04:07,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:04:07,077 INFO L85 PathProgramCache]: Analyzing trace with hash 307809275, now seen corresponding path program 30 times [2023-11-12 01:04:07,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:04:07,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099356048] [2023-11-12 01:04:07,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:04:07,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:04:07,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:04:07,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:04:07,541 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:04:07,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099356048] [2023-11-12 01:04:07,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099356048] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:04:07,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:04:07,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 01:04:07,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188809519] [2023-11-12 01:04:07,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:04:07,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 01:04:07,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:04:07,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 01:04:07,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-12 01:04:07,544 INFO L87 Difference]: Start difference. First operand 5518 states and 16384 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:04:07,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:04:07,963 INFO L93 Difference]: Finished difference Result 6246 states and 18585 transitions. [2023-11-12 01:04:07,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 01:04:07,964 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-11-12 01:04:07,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:04:07,981 INFO L225 Difference]: With dead ends: 6246 [2023-11-12 01:04:07,981 INFO L226 Difference]: Without dead ends: 6102 [2023-11-12 01:04:07,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-12 01:04:07,982 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 73 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 01:04:07,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 96 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 01:04:07,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6102 states. [2023-11-12 01:04:08,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6102 to 5918. [2023-11-12 01:04:08,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5918 states, 5917 states have (on average 2.975156329220889) internal successors, (17604), 5917 states have internal predecessors, (17604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:04:08,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5918 states to 5918 states and 17604 transitions. [2023-11-12 01:04:08,110 INFO L78 Accepts]: Start accepts. Automaton has 5918 states and 17604 transitions. Word has length 43 [2023-11-12 01:04:08,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:04:08,111 INFO L495 AbstractCegarLoop]: Abstraction has 5918 states and 17604 transitions. [2023-11-12 01:04:08,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:04:08,111 INFO L276 IsEmpty]: Start isEmpty. Operand 5918 states and 17604 transitions. [2023-11-12 01:04:08,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-12 01:04:08,119 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:04:08,119 INFO L195 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] [2023-11-12 01:04:08,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-12 01:04:08,119 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-12 01:04:08,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:04:08,120 INFO L85 PathProgramCache]: Analyzing trace with hash 996127741, now seen corresponding path program 31 times [2023-11-12 01:04:08,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:04:08,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306086848] [2023-11-12 01:04:08,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:04:08,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:04:08,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:04:08,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:04:08,548 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:04:08,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306086848] [2023-11-12 01:04:08,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306086848] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:04:08,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:04:08,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-12 01:04:08,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45607224] [2023-11-12 01:04:08,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:04:08,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 01:04:08,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:04:08,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 01:04:08,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-12 01:04:08,551 INFO L87 Difference]: Start difference. First operand 5918 states and 17604 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:04:09,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:04:09,228 INFO L93 Difference]: Finished difference Result 8804 states and 26187 transitions. [2023-11-12 01:04:09,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-12 01:04:09,229 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-11-12 01:04:09,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:04:09,257 INFO L225 Difference]: With dead ends: 8804 [2023-11-12 01:04:09,258 INFO L226 Difference]: Without dead ends: 8532 [2023-11-12 01:04:09,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2023-11-12 01:04:09,260 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 182 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-12 01:04:09,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 138 Invalid, 768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-12 01:04:09,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8532 states. [2023-11-12 01:04:09,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8532 to 6276. [2023-11-12 01:04:09,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6276 states, 6275 states have (on average 2.959840637450199) internal successors, (18573), 6275 states have internal predecessors, (18573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:04:09,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6276 states to 6276 states and 18573 transitions. [2023-11-12 01:04:09,441 INFO L78 Accepts]: Start accepts. Automaton has 6276 states and 18573 transitions. Word has length 43 [2023-11-12 01:04:09,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:04:09,441 INFO L495 AbstractCegarLoop]: Abstraction has 6276 states and 18573 transitions. [2023-11-12 01:04:09,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:04:09,441 INFO L276 IsEmpty]: Start isEmpty. Operand 6276 states and 18573 transitions. [2023-11-12 01:04:09,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-12 01:04:09,458 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:04:09,458 INFO L195 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] [2023-11-12 01:04:09,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-12 01:04:09,458 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-12 01:04:09,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:04:09,459 INFO L85 PathProgramCache]: Analyzing trace with hash -235928411, now seen corresponding path program 32 times [2023-11-12 01:04:09,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:04:09,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964327846] [2023-11-12 01:04:09,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:04:09,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:04:09,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat