./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe01668-27f1-440c-bb61-544321c334bb/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe01668-27f1-440c-bb61-544321c334bb/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe01668-27f1-440c-bb61-544321c334bb/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe01668-27f1-440c-bb61-544321c334bb/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe01668-27f1-440c-bb61-544321c334bb/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe01668-27f1-440c-bb61-544321c334bb/bin/utaipan-verify-DbMuA5NWw2 --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 34aba2e0444cf7168338399e1c016871ad9a3305ff2dee9e611b86f3cad834b5 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:27:46,500 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:27:46,613 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe01668-27f1-440c-bb61-544321c334bb/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 12:27:46,619 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:27:46,619 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:27:46,646 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:27:46,647 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:27:46,647 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:27:46,648 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:27:46,649 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:27:46,650 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:27:46,650 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:27:46,651 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:27:46,652 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:27:46,652 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:27:46,653 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:27:46,653 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:27:46,654 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:27:46,654 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:27:46,655 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:27:46,656 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:27:46,656 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:27:46,657 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:27:46,658 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:27:46,659 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:27:46,659 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:27:46,660 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:27:46,660 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:27:46,661 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:27:46,661 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:27:46,662 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:27:46,662 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:27:46,663 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:27:46,663 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:27:46,664 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:27:46,664 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:27:46,665 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:27:46,665 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:27:46,666 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:27:46,667 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:27:46,667 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:27:46,668 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:27:46,669 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:27:46,669 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:27:46,669 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:27:46,670 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:27:46,670 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:27:46,670 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_ffe01668-27f1-440c-bb61-544321c334bb/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe01668-27f1-440c-bb61-544321c334bb/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34aba2e0444cf7168338399e1c016871ad9a3305ff2dee9e611b86f3cad834b5 [2024-11-02 12:27:47,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:27:47,051 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:27:47,055 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:27:47,058 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:27:47,059 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:27:47,060 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe01668-27f1-440c-bb61-544321c334bb/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c Unable to find full path for "g++" [2024-11-02 12:27:49,480 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:27:49,922 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:27:49,923 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe01668-27f1-440c-bb61-544321c334bb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2024-11-02 12:27:49,947 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe01668-27f1-440c-bb61-544321c334bb/bin/utaipan-verify-DbMuA5NWw2/data/138ad37fb/c0a019d2cb3d485fbbd9750c524e1e72/FLAG4e6de384e [2024-11-02 12:27:50,078 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe01668-27f1-440c-bb61-544321c334bb/bin/utaipan-verify-DbMuA5NWw2/data/138ad37fb/c0a019d2cb3d485fbbd9750c524e1e72 [2024-11-02 12:27:50,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:27:50,084 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:27:50,085 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:27:50,085 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:27:50,092 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:27:50,093 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:27:50" (1/1) ... [2024-11-02 12:27:50,094 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c3f5b0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:50, skipping insertion in model container [2024-11-02 12:27:50,094 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:27:50" (1/1) ... [2024-11-02 12:27:50,186 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:27:50,570 WARN L251 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_ffe01668-27f1-440c-bb61-544321c334bb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8127,8140] [2024-11-02 12:27:50,683 WARN L251 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_ffe01668-27f1-440c-bb61-544321c334bb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14997,15010] [2024-11-02 12:27:50,706 WARN L251 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_ffe01668-27f1-440c-bb61-544321c334bb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17084,17097] [2024-11-02 12:27:50,716 WARN L251 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_ffe01668-27f1-440c-bb61-544321c334bb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18108,18121] [2024-11-02 12:27:50,930 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:27:50,970 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:27:51,071 WARN L251 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_ffe01668-27f1-440c-bb61-544321c334bb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8127,8140] [2024-11-02 12:27:51,121 WARN L251 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_ffe01668-27f1-440c-bb61-544321c334bb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14997,15010] [2024-11-02 12:27:51,132 WARN L251 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_ffe01668-27f1-440c-bb61-544321c334bb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17084,17097] [2024-11-02 12:27:51,146 WARN L251 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_ffe01668-27f1-440c-bb61-544321c334bb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18108,18121] [2024-11-02 12:27:51,428 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:27:51,453 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:27:51,454 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:51 WrapperNode [2024-11-02 12:27:51,455 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:27:51,456 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:27:51,456 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:27:51,456 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:27:51,466 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:51" (1/1) ... [2024-11-02 12:27:51,507 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:51" (1/1) ... [2024-11-02 12:27:51,621 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2620 [2024-11-02 12:27:51,622 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:27:51,623 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:27:51,624 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:27:51,624 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:27:51,634 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:51" (1/1) ... [2024-11-02 12:27:51,634 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:51" (1/1) ... [2024-11-02 12:27:51,645 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:51" (1/1) ... [2024-11-02 12:27:51,645 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:51" (1/1) ... [2024-11-02 12:27:51,695 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:51" (1/1) ... [2024-11-02 12:27:51,713 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:51" (1/1) ... [2024-11-02 12:27:51,721 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:51" (1/1) ... [2024-11-02 12:27:51,729 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:51" (1/1) ... [2024-11-02 12:27:51,742 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:27:51,745 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:27:51,746 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:27:51,746 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:27:51,747 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:51" (1/1) ... [2024-11-02 12:27:51,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:27:51,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe01668-27f1-440c-bb61-544321c334bb/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:27:51,788 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe01668-27f1-440c-bb61-544321c334bb/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:27:51,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe01668-27f1-440c-bb61-544321c334bb/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:27:51,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:27:51,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:27:51,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:27:51,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:27:52,081 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:27:52,083 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:27:54,281 INFO L? ?]: Removed 426 outVars from TransFormulas that were not future-live. [2024-11-02 12:27:54,282 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:27:54,513 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:27:54,517 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-02 12:27:54,517 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:27:54 BoogieIcfgContainer [2024-11-02 12:27:54,521 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:27:54,523 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:27:54,523 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:27:54,528 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:27:54,529 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:27:50" (1/3) ... [2024-11-02 12:27:54,531 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f327c7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:27:54, skipping insertion in model container [2024-11-02 12:27:54,532 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:51" (2/3) ... [2024-11-02 12:27:54,533 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f327c7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:27:54, skipping insertion in model container [2024-11-02 12:27:54,533 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:27:54" (3/3) ... [2024-11-02 12:27:54,534 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2024-11-02 12:27:54,555 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:27:54,555 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-11-02 12:27:54,655 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:27:54,662 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2d535493, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:27:54,663 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-02 12:27:54,670 INFO L276 IsEmpty]: Start isEmpty. Operand has 426 states, 421 states have (on average 1.8598574821852731) internal successors, (783), 425 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:54,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-02 12:27:54,690 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:54,690 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:54,691 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-02 12:27:54,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:54,699 INFO L85 PathProgramCache]: Analyzing trace with hash 34120099, now seen corresponding path program 1 times [2024-11-02 12:27:54,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:54,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511308403] [2024-11-02 12:27:54,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:54,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:55,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:55,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:27:55,440 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:55,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511308403] [2024-11-02 12:27:55,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511308403] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:27:55,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:27:55,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:27:55,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116720768] [2024-11-02 12:27:55,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:27:55,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:27:55,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:55,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:27:55,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:27:55,505 INFO L87 Difference]: Start difference. First operand has 426 states, 421 states have (on average 1.8598574821852731) internal successors, (783), 425 states have internal predecessors, (783), 0 states have call successors, (0), 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 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:56,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:27:56,210 INFO L93 Difference]: Finished difference Result 712 states and 1257 transitions. [2024-11-02 12:27:56,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:27:56,220 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2024-11-02 12:27:56,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:27:56,237 INFO L225 Difference]: With dead ends: 712 [2024-11-02 12:27:56,237 INFO L226 Difference]: Without dead ends: 449 [2024-11-02 12:27:56,241 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:27:56,248 INFO L432 NwaCegarLoop]: 445 mSDtfsCounter, 2125 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2125 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-02 12:27:56,250 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2125 Valid, 551 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-02 12:27:56,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2024-11-02 12:27:56,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 443. [2024-11-02 12:27:56,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 439 states have (on average 1.3143507972665147) internal successors, (577), 442 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:56,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 577 transitions. [2024-11-02 12:27:56,396 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 577 transitions. Word has length 49 [2024-11-02 12:27:56,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:27:56,397 INFO L471 AbstractCegarLoop]: Abstraction has 443 states and 577 transitions. [2024-11-02 12:27:56,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:56,397 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 577 transitions. [2024-11-02 12:27:56,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-02 12:27:56,404 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:56,404 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:56,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:27:56,405 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-02 12:27:56,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:56,408 INFO L85 PathProgramCache]: Analyzing trace with hash 758566708, now seen corresponding path program 1 times [2024-11-02 12:27:56,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:56,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300470019] [2024-11-02 12:27:56,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:56,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:56,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:56,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:27:56,612 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:56,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300470019] [2024-11-02 12:27:56,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300470019] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:27:56,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:27:56,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:27:56,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556224599] [2024-11-02 12:27:56,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:27:56,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:27:56,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:56,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:27:56,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:27:56,622 INFO L87 Difference]: Start difference. First operand 443 states and 577 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:56,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:27:56,697 INFO L93 Difference]: Finished difference Result 724 states and 978 transitions. [2024-11-02 12:27:56,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:27:56,698 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2024-11-02 12:27:56,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:27:56,702 INFO L225 Difference]: With dead ends: 724 [2024-11-02 12:27:56,704 INFO L226 Difference]: Without dead ends: 566 [2024-11-02 12:27:56,707 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:27:56,709 INFO L432 NwaCegarLoop]: 476 mSDtfsCounter, 279 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:27:56,709 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 753 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:27:56,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2024-11-02 12:27:56,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 560. [2024-11-02 12:27:56,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 556 states have (on average 1.3435251798561152) internal successors, (747), 559 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:56,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 747 transitions. [2024-11-02 12:27:56,753 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 747 transitions. Word has length 49 [2024-11-02 12:27:56,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:27:56,754 INFO L471 AbstractCegarLoop]: Abstraction has 560 states and 747 transitions. [2024-11-02 12:27:56,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:56,755 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 747 transitions. [2024-11-02 12:27:56,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-02 12:27:56,759 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:56,759 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:56,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:27:56,760 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-02 12:27:56,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:56,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1943064238, now seen corresponding path program 1 times [2024-11-02 12:27:56,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:56,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867640720] [2024-11-02 12:27:56,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:56,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:56,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:56,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:27:56,968 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:56,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867640720] [2024-11-02 12:27:56,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867640720] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:27:56,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:27:56,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:27:56,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234945721] [2024-11-02 12:27:56,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:27:56,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:27:56,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:56,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:27:56,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:27:56,977 INFO L87 Difference]: Start difference. First operand 560 states and 747 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:57,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:27:57,103 INFO L93 Difference]: Finished difference Result 1072 states and 1473 transitions. [2024-11-02 12:27:57,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:27:57,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2024-11-02 12:27:57,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:27:57,110 INFO L225 Difference]: With dead ends: 1072 [2024-11-02 12:27:57,110 INFO L226 Difference]: Without dead ends: 810 [2024-11-02 12:27:57,113 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:27:57,114 INFO L432 NwaCegarLoop]: 474 mSDtfsCounter, 236 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:27:57,115 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 786 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:27:57,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2024-11-02 12:27:57,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 803. [2024-11-02 12:27:57,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 799 states have (on average 1.360450563204005) internal successors, (1087), 802 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:57,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1087 transitions. [2024-11-02 12:27:57,143 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1087 transitions. Word has length 49 [2024-11-02 12:27:57,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:27:57,144 INFO L471 AbstractCegarLoop]: Abstraction has 803 states and 1087 transitions. [2024-11-02 12:27:57,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:57,144 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1087 transitions. [2024-11-02 12:27:57,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-02 12:27:57,147 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:57,147 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:57,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:27:57,148 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-02 12:27:57,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:57,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1798780356, now seen corresponding path program 1 times [2024-11-02 12:27:57,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:57,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457263582] [2024-11-02 12:27:57,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:57,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:57,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:57,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:27:57,352 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:57,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457263582] [2024-11-02 12:27:57,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457263582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:27:57,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:27:57,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:27:57,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026283666] [2024-11-02 12:27:57,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:27:57,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:27:57,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:57,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:27:57,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:27:57,356 INFO L87 Difference]: Start difference. First operand 803 states and 1087 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:57,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:27:57,780 INFO L93 Difference]: Finished difference Result 1892 states and 2622 transitions. [2024-11-02 12:27:57,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:27:57,781 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2024-11-02 12:27:57,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:27:57,785 INFO L225 Difference]: With dead ends: 1892 [2024-11-02 12:27:57,785 INFO L226 Difference]: Without dead ends: 1184 [2024-11-02 12:27:57,786 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:27:57,787 INFO L432 NwaCegarLoop]: 242 mSDtfsCounter, 1271 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1271 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:27:57,788 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1271 Valid, 318 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 12:27:57,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2024-11-02 12:27:57,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 1178. [2024-11-02 12:27:57,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1178 states, 1174 states have (on average 1.374787052810903) internal successors, (1614), 1177 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:57,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1614 transitions. [2024-11-02 12:27:57,815 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1614 transitions. Word has length 49 [2024-11-02 12:27:57,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:27:57,815 INFO L471 AbstractCegarLoop]: Abstraction has 1178 states and 1614 transitions. [2024-11-02 12:27:57,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:57,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1614 transitions. [2024-11-02 12:27:57,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-02 12:27:57,817 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:57,817 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:57,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-02 12:27:57,818 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-02 12:27:57,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:57,818 INFO L85 PathProgramCache]: Analyzing trace with hash -108782984, now seen corresponding path program 1 times [2024-11-02 12:27:57,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:57,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628262913] [2024-11-02 12:27:57,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:57,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:57,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:57,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:27:57,915 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:57,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628262913] [2024-11-02 12:27:57,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628262913] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:27:57,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:27:57,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:27:57,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429734649] [2024-11-02 12:27:57,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:27:57,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:27:57,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:57,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:27:57,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:27:57,918 INFO L87 Difference]: Start difference. First operand 1178 states and 1614 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:57,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:27:57,985 INFO L93 Difference]: Finished difference Result 2893 states and 3999 transitions. [2024-11-02 12:27:57,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:27:57,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-02 12:27:57,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:27:57,992 INFO L225 Difference]: With dead ends: 2893 [2024-11-02 12:27:57,992 INFO L226 Difference]: Without dead ends: 1899 [2024-11-02 12:27:57,994 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:27:57,995 INFO L432 NwaCegarLoop]: 459 mSDtfsCounter, 276 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:27:57,995 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 720 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:27:57,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2024-11-02 12:27:58,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1893. [2024-11-02 12:27:58,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1893 states, 1889 states have (on average 1.3610375860243515) internal successors, (2571), 1892 states have internal predecessors, (2571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:58,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 2571 transitions. [2024-11-02 12:27:58,045 INFO L78 Accepts]: Start accepts. Automaton has 1893 states and 2571 transitions. Word has length 50 [2024-11-02 12:27:58,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:27:58,045 INFO L471 AbstractCegarLoop]: Abstraction has 1893 states and 2571 transitions. [2024-11-02 12:27:58,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:58,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1893 states and 2571 transitions. [2024-11-02 12:27:58,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-02 12:27:58,048 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:58,048 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:58,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-02 12:27:58,049 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-02 12:27:58,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:58,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1856759737, now seen corresponding path program 1 times [2024-11-02 12:27:58,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:58,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019068043] [2024-11-02 12:27:58,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:58,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:58,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:58,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:27:58,200 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:58,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019068043] [2024-11-02 12:27:58,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019068043] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:27:58,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:27:58,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:27:58,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608714317] [2024-11-02 12:27:58,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:27:58,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:27:58,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:58,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:27:58,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:27:58,203 INFO L87 Difference]: Start difference. First operand 1893 states and 2571 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:58,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:27:58,568 INFO L93 Difference]: Finished difference Result 4654 states and 6390 transitions. [2024-11-02 12:27:58,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:27:58,568 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2024-11-02 12:27:58,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:27:58,577 INFO L225 Difference]: With dead ends: 4654 [2024-11-02 12:27:58,577 INFO L226 Difference]: Without dead ends: 2931 [2024-11-02 12:27:58,579 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:27:58,580 INFO L432 NwaCegarLoop]: 195 mSDtfsCounter, 1167 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1167 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:27:58,581 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1167 Valid, 270 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:27:58,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2931 states. [2024-11-02 12:27:58,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2931 to 2924. [2024-11-02 12:27:58,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2920 states have (on average 1.3623287671232878) internal successors, (3978), 2923 states have internal predecessors, (3978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:58,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 3978 transitions. [2024-11-02 12:27:58,721 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 3978 transitions. Word has length 51 [2024-11-02 12:27:58,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:27:58,724 INFO L471 AbstractCegarLoop]: Abstraction has 2924 states and 3978 transitions. [2024-11-02 12:27:58,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:58,724 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 3978 transitions. [2024-11-02 12:27:58,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-02 12:27:58,726 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:58,726 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:58,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-02 12:27:58,727 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-02 12:27:58,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:58,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1124331061, now seen corresponding path program 1 times [2024-11-02 12:27:58,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:58,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528807045] [2024-11-02 12:27:58,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:58,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:58,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:59,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:27:59,048 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:59,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528807045] [2024-11-02 12:27:59,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528807045] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:27:59,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:27:59,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-02 12:27:59,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292745103] [2024-11-02 12:27:59,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:27:59,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-02 12:27:59,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:59,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-02 12:27:59,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:27:59,050 INFO L87 Difference]: Start difference. First operand 2924 states and 3978 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:59,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:27:59,619 INFO L93 Difference]: Finished difference Result 5780 states and 7919 transitions. [2024-11-02 12:27:59,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-02 12:27:59,619 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-11-02 12:27:59,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:27:59,634 INFO L225 Difference]: With dead ends: 5780 [2024-11-02 12:27:59,634 INFO L226 Difference]: Without dead ends: 4685 [2024-11-02 12:27:59,636 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-11-02 12:27:59,637 INFO L432 NwaCegarLoop]: 201 mSDtfsCounter, 1457 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1457 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:27:59,638 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1457 Valid, 496 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 12:27:59,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4685 states. [2024-11-02 12:27:59,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4685 to 2938. [2024-11-02 12:27:59,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2938 states, 2934 states have (on average 1.361963190184049) internal successors, (3996), 2937 states have internal predecessors, (3996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:59,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2938 states to 2938 states and 3996 transitions. [2024-11-02 12:27:59,753 INFO L78 Accepts]: Start accepts. Automaton has 2938 states and 3996 transitions. Word has length 52 [2024-11-02 12:27:59,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:27:59,753 INFO L471 AbstractCegarLoop]: Abstraction has 2938 states and 3996 transitions. [2024-11-02 12:27:59,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:59,753 INFO L276 IsEmpty]: Start isEmpty. Operand 2938 states and 3996 transitions. [2024-11-02 12:27:59,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-02 12:27:59,756 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:59,756 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:59,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-02 12:27:59,756 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-02 12:27:59,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:59,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1221262858, now seen corresponding path program 1 times [2024-11-02 12:27:59,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:59,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910891134] [2024-11-02 12:27:59,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:59,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:59,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:59,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:27:59,993 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:59,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910891134] [2024-11-02 12:27:59,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910891134] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:27:59,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:27:59,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-02 12:27:59,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279253098] [2024-11-02 12:27:59,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:27:59,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-02 12:27:59,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:59,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-02 12:27:59,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:27:59,996 INFO L87 Difference]: Start difference. First operand 2938 states and 3996 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:28:00,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:28:00,606 INFO L93 Difference]: Finished difference Result 6508 states and 8951 transitions. [2024-11-02 12:28:00,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-02 12:28:00,607 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-11-02 12:28:00,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:28:00,623 INFO L225 Difference]: With dead ends: 6508 [2024-11-02 12:28:00,623 INFO L226 Difference]: Without dead ends: 5568 [2024-11-02 12:28:00,626 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-11-02 12:28:00,626 INFO L432 NwaCegarLoop]: 190 mSDtfsCounter, 1560 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1560 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-02 12:28:00,627 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1560 Valid, 520 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-02 12:28:00,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5568 states. [2024-11-02 12:28:00,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5568 to 2960. [2024-11-02 12:28:00,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2960 states, 2956 states have (on average 1.3623139377537212) internal successors, (4027), 2959 states have internal predecessors, (4027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:28:00,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2960 states to 2960 states and 4027 transitions. [2024-11-02 12:28:00,725 INFO L78 Accepts]: Start accepts. Automaton has 2960 states and 4027 transitions. Word has length 52 [2024-11-02 12:28:00,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:28:00,725 INFO L471 AbstractCegarLoop]: Abstraction has 2960 states and 4027 transitions. [2024-11-02 12:28:00,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:28:00,725 INFO L276 IsEmpty]: Start isEmpty. Operand 2960 states and 4027 transitions. [2024-11-02 12:28:00,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-02 12:28:00,728 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:28:00,728 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:28:00,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-02 12:28:00,729 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-02 12:28:00,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:28:00,729 INFO L85 PathProgramCache]: Analyzing trace with hash -163415276, now seen corresponding path program 1 times [2024-11-02 12:28:00,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:28:00,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64207731] [2024-11-02 12:28:00,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:00,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:28:00,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:28:00,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:28:00,896 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:28:00,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64207731] [2024-11-02 12:28:00,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64207731] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:28:00,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:28:00,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-02 12:28:00,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128004179] [2024-11-02 12:28:00,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:28:00,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-02 12:28:00,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:28:00,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-02 12:28:00,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:28:00,899 INFO L87 Difference]: Start difference. First operand 2960 states and 4027 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:28:01,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:28:01,524 INFO L93 Difference]: Finished difference Result 7396 states and 10207 transitions. [2024-11-02 12:28:01,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-02 12:28:01,525 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-11-02 12:28:01,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:28:01,544 INFO L225 Difference]: With dead ends: 7396 [2024-11-02 12:28:01,544 INFO L226 Difference]: Without dead ends: 6342 [2024-11-02 12:28:01,547 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-11-02 12:28:01,548 INFO L432 NwaCegarLoop]: 198 mSDtfsCounter, 1634 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1634 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-02 12:28:01,548 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1634 Valid, 525 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-02 12:28:01,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6342 states. [2024-11-02 12:28:01,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6342 to 2994. [2024-11-02 12:28:01,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2994 states, 2990 states have (on average 1.3615384615384616) internal successors, (4071), 2993 states have internal predecessors, (4071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:28:01,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2994 states to 2994 states and 4071 transitions. [2024-11-02 12:28:01,639 INFO L78 Accepts]: Start accepts. Automaton has 2994 states and 4071 transitions. Word has length 52 [2024-11-02 12:28:01,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:28:01,640 INFO L471 AbstractCegarLoop]: Abstraction has 2994 states and 4071 transitions. [2024-11-02 12:28:01,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:28:01,640 INFO L276 IsEmpty]: Start isEmpty. Operand 2994 states and 4071 transitions. [2024-11-02 12:28:01,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-02 12:28:01,642 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:28:01,643 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:28:01,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-02 12:28:01,643 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-02 12:28:01,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:28:01,644 INFO L85 PathProgramCache]: Analyzing trace with hash -55106621, now seen corresponding path program 1 times [2024-11-02 12:28:01,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:28:01,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587949434] [2024-11-02 12:28:01,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:01,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:28:01,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:28:01,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:28:01,967 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:28:01,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587949434] [2024-11-02 12:28:01,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587949434] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:28:01,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:28:01,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-02 12:28:01,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176303855] [2024-11-02 12:28:01,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:28:01,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-02 12:28:01,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:28:01,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-02 12:28:01,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:28:01,969 INFO L87 Difference]: Start difference. First operand 2994 states and 4071 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:28:02,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:28:02,580 INFO L93 Difference]: Finished difference Result 6004 states and 8258 transitions. [2024-11-02 12:28:02,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-02 12:28:02,581 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2024-11-02 12:28:02,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:28:02,604 INFO L225 Difference]: With dead ends: 6004 [2024-11-02 12:28:02,604 INFO L226 Difference]: Without dead ends: 3972 [2024-11-02 12:28:02,611 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-02 12:28:02,612 INFO L432 NwaCegarLoop]: 195 mSDtfsCounter, 769 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-02 12:28:02,612 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 630 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-02 12:28:02,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3972 states. [2024-11-02 12:28:02,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3972 to 2916. [2024-11-02 12:28:02,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2916 states, 2912 states have (on average 1.3602335164835164) internal successors, (3961), 2915 states have internal predecessors, (3961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:28:02,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2916 states to 2916 states and 3961 transitions. [2024-11-02 12:28:02,675 INFO L78 Accepts]: Start accepts. Automaton has 2916 states and 3961 transitions. Word has length 53 [2024-11-02 12:28:02,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:28:02,676 INFO L471 AbstractCegarLoop]: Abstraction has 2916 states and 3961 transitions. [2024-11-02 12:28:02,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:28:02,676 INFO L276 IsEmpty]: Start isEmpty. Operand 2916 states and 3961 transitions. [2024-11-02 12:28:02,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-02 12:28:02,678 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:28:02,679 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:28:02,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-02 12:28:02,679 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-02 12:28:02,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:28:02,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1129390909, now seen corresponding path program 1 times [2024-11-02 12:28:02,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:28:02,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914986071] [2024-11-02 12:28:02,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:02,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:28:02,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:28:03,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:28:03,013 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:28:03,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914986071] [2024-11-02 12:28:03,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914986071] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:28:03,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:28:03,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-02 12:28:03,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86228411] [2024-11-02 12:28:03,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:28:03,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-02 12:28:03,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:28:03,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-02 12:28:03,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-02 12:28:03,016 INFO L87 Difference]: Start difference. First operand 2916 states and 3961 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:28:03,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:28:03,792 INFO L93 Difference]: Finished difference Result 6056 states and 8271 transitions. [2024-11-02 12:28:03,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-02 12:28:03,792 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2024-11-02 12:28:03,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:28:03,807 INFO L225 Difference]: With dead ends: 6056 [2024-11-02 12:28:03,811 INFO L226 Difference]: Without dead ends: 4154 [2024-11-02 12:28:03,813 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2024-11-02 12:28:03,818 INFO L432 NwaCegarLoop]: 222 mSDtfsCounter, 807 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-02 12:28:03,819 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [807 Valid, 884 Invalid, 768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-02 12:28:03,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4154 states. [2024-11-02 12:28:03,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4154 to 2887. [2024-11-02 12:28:03,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2887 states, 2883 states have (on average 1.3596947624002775) internal successors, (3920), 2886 states have internal predecessors, (3920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:28:03,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2887 states to 2887 states and 3920 transitions. [2024-11-02 12:28:03,893 INFO L78 Accepts]: Start accepts. Automaton has 2887 states and 3920 transitions. Word has length 53 [2024-11-02 12:28:03,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:28:03,894 INFO L471 AbstractCegarLoop]: Abstraction has 2887 states and 3920 transitions. [2024-11-02 12:28:03,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:28:03,894 INFO L276 IsEmpty]: Start isEmpty. Operand 2887 states and 3920 transitions. [2024-11-02 12:28:03,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-02 12:28:03,896 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:28:03,896 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:28:03,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-02 12:28:03,897 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-02 12:28:03,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:28:03,897 INFO L85 PathProgramCache]: Analyzing trace with hash -421230622, now seen corresponding path program 1 times [2024-11-02 12:28:03,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:28:03,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932473191] [2024-11-02 12:28:03,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:03,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:28:03,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:28:04,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:28:04,272 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:28:04,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932473191] [2024-11-02 12:28:04,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932473191] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:28:04,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:28:04,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-02 12:28:04,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499876405] [2024-11-02 12:28:04,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:28:04,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-02 12:28:04,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:28:04,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-02 12:28:04,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-02 12:28:04,274 INFO L87 Difference]: Start difference. First operand 2887 states and 3920 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:28:05,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:28:05,135 INFO L93 Difference]: Finished difference Result 4145 states and 5589 transitions. [2024-11-02 12:28:05,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-02 12:28:05,135 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2024-11-02 12:28:05,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:28:05,145 INFO L225 Difference]: With dead ends: 4145 [2024-11-02 12:28:05,145 INFO L226 Difference]: Without dead ends: 4140 [2024-11-02 12:28:05,147 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2024-11-02 12:28:05,148 INFO L432 NwaCegarLoop]: 232 mSDtfsCounter, 1235 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1235 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-02 12:28:05,148 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1235 Valid, 937 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-02 12:28:05,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4140 states. [2024-11-02 12:28:05,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4140 to 2887. [2024-11-02 12:28:05,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2887 states, 2883 states have (on average 1.3590010405827264) internal successors, (3918), 2886 states have internal predecessors, (3918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:28:05,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2887 states to 2887 states and 3918 transitions. [2024-11-02 12:28:05,220 INFO L78 Accepts]: Start accepts. Automaton has 2887 states and 3918 transitions. Word has length 53 [2024-11-02 12:28:05,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:28:05,221 INFO L471 AbstractCegarLoop]: Abstraction has 2887 states and 3918 transitions. [2024-11-02 12:28:05,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:28:05,221 INFO L276 IsEmpty]: Start isEmpty. Operand 2887 states and 3918 transitions. [2024-11-02 12:28:05,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-02 12:28:05,223 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:28:05,223 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:28:05,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-02 12:28:05,224 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-02 12:28:05,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:28:05,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1237294753, now seen corresponding path program 1 times [2024-11-02 12:28:05,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:28:05,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12194153] [2024-11-02 12:28:05,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:05,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:28:05,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:28:05,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:28:05,313 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:28:05,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12194153] [2024-11-02 12:28:05,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12194153] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:28:05,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:28:05,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:28:05,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096869588] [2024-11-02 12:28:05,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:28:05,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:28:05,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:28:05,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:28:05,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:28:05,315 INFO L87 Difference]: Start difference. First operand 2887 states and 3918 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:28:05,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:28:05,389 INFO L93 Difference]: Finished difference Result 3946 states and 5380 transitions. [2024-11-02 12:28:05,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:28:05,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-02 12:28:05,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:28:05,396 INFO L225 Difference]: With dead ends: 3946 [2024-11-02 12:28:05,396 INFO L226 Difference]: Without dead ends: 2894 [2024-11-02 12:28:05,398 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:28:05,399 INFO L432 NwaCegarLoop]: 419 mSDtfsCounter, 180 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:28:05,399 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 671 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:28:05,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2024-11-02 12:28:05,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 2887. [2024-11-02 12:28:05,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2887 states, 2883 states have (on average 1.3423517169614985) internal successors, (3870), 2886 states have internal predecessors, (3870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:28:05,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2887 states to 2887 states and 3870 transitions. [2024-11-02 12:28:05,461 INFO L78 Accepts]: Start accepts. Automaton has 2887 states and 3870 transitions. Word has length 54 [2024-11-02 12:28:05,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:28:05,462 INFO L471 AbstractCegarLoop]: Abstraction has 2887 states and 3870 transitions. [2024-11-02 12:28:05,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:28:05,462 INFO L276 IsEmpty]: Start isEmpty. Operand 2887 states and 3870 transitions. [2024-11-02 12:28:05,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-02 12:28:05,464 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:28:05,464 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:28:05,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-02 12:28:05,465 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-02 12:28:05,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:28:05,465 INFO L85 PathProgramCache]: Analyzing trace with hash -863697757, now seen corresponding path program 1 times [2024-11-02 12:28:05,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:28:05,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808971896] [2024-11-02 12:28:05,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:05,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:28:05,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:28:05,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:28:05,546 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:28:05,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808971896] [2024-11-02 12:28:05,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808971896] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:28:05,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:28:05,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:28:05,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562721983] [2024-11-02 12:28:05,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:28:05,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:28:05,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:28:05,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:28:05,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:28:05,549 INFO L87 Difference]: Start difference. First operand 2887 states and 3870 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:28:05,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:28:05,609 INFO L93 Difference]: Finished difference Result 4007 states and 5396 transitions. [2024-11-02 12:28:05,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:28:05,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-02 12:28:05,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:28:05,615 INFO L225 Difference]: With dead ends: 4007 [2024-11-02 12:28:05,615 INFO L226 Difference]: Without dead ends: 2893 [2024-11-02 12:28:05,617 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:28:05,618 INFO L432 NwaCegarLoop]: 431 mSDtfsCounter, 196 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:28:05,619 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 672 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:28:05,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2893 states. [2024-11-02 12:28:05,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2893 to 2887. [2024-11-02 12:28:05,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2887 states, 2883 states have (on average 1.327089836975373) internal successors, (3826), 2886 states have internal predecessors, (3826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:28:05,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2887 states to 2887 states and 3826 transitions. [2024-11-02 12:28:05,687 INFO L78 Accepts]: Start accepts. Automaton has 2887 states and 3826 transitions. Word has length 54 [2024-11-02 12:28:05,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:28:05,688 INFO L471 AbstractCegarLoop]: Abstraction has 2887 states and 3826 transitions. [2024-11-02 12:28:05,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:28:05,688 INFO L276 IsEmpty]: Start isEmpty. Operand 2887 states and 3826 transitions. [2024-11-02 12:28:05,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-02 12:28:05,690 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:28:05,691 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:28:05,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-02 12:28:05,691 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-02 12:28:05,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:28:05,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1589153365, now seen corresponding path program 1 times [2024-11-02 12:28:05,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:28:05,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829380788] [2024-11-02 12:28:05,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:05,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:28:05,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:28:05,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:28:05,769 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:28:05,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829380788] [2024-11-02 12:28:05,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829380788] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:28:05,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:28:05,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:28:05,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268047525] [2024-11-02 12:28:05,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:28:05,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:28:05,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:28:05,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:28:05,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:28:05,772 INFO L87 Difference]: Start difference. First operand 2887 states and 3826 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:28:05,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:28:05,828 INFO L93 Difference]: Finished difference Result 4036 states and 5379 transitions. [2024-11-02 12:28:05,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:28:05,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-02 12:28:05,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:28:05,834 INFO L225 Difference]: With dead ends: 4036 [2024-11-02 12:28:05,834 INFO L226 Difference]: Without dead ends: 2878 [2024-11-02 12:28:05,836 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:28:05,837 INFO L432 NwaCegarLoop]: 420 mSDtfsCounter, 216 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:28:05,837 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 692 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:28:05,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2878 states. [2024-11-02 12:28:05,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2878 to 2872. [2024-11-02 12:28:05,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2872 states, 2868 states have (on average 1.306834030683403) internal successors, (3748), 2871 states have internal predecessors, (3748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:28:05,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2872 states to 2872 states and 3748 transitions. [2024-11-02 12:28:05,888 INFO L78 Accepts]: Start accepts. Automaton has 2872 states and 3748 transitions. Word has length 54 [2024-11-02 12:28:05,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:28:05,888 INFO L471 AbstractCegarLoop]: Abstraction has 2872 states and 3748 transitions. [2024-11-02 12:28:05,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:28:05,889 INFO L276 IsEmpty]: Start isEmpty. Operand 2872 states and 3748 transitions. [2024-11-02 12:28:05,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-02 12:28:05,891 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:28:05,891 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:28:05,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-02 12:28:05,892 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-02 12:28:05,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:28:05,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1127796312, now seen corresponding path program 1 times [2024-11-02 12:28:05,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:28:05,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950471463] [2024-11-02 12:28:05,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:05,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:28:05,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:28:05,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:28:05,955 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:28:05,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950471463] [2024-11-02 12:28:05,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950471463] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:28:05,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:28:05,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:28:05,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348850483] [2024-11-02 12:28:05,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:28:05,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:28:05,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:28:05,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:28:05,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:28:05,957 INFO L87 Difference]: Start difference. First operand 2872 states and 3748 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:28:06,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:28:06,042 INFO L93 Difference]: Finished difference Result 4519 states and 5947 transitions. [2024-11-02 12:28:06,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:28:06,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-02 12:28:06,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:28:06,049 INFO L225 Difference]: With dead ends: 4519 [2024-11-02 12:28:06,049 INFO L226 Difference]: Without dead ends: 3218 [2024-11-02 12:28:06,051 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:28:06,052 INFO L432 NwaCegarLoop]: 363 mSDtfsCounter, 282 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:28:06,052 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 476 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:28:06,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3218 states. [2024-11-02 12:28:06,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3218 to 2662. [2024-11-02 12:28:06,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2662 states, 2658 states have (on average 1.3054928517682467) internal successors, (3470), 2661 states have internal predecessors, (3470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:28:06,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2662 states to 2662 states and 3470 transitions. [2024-11-02 12:28:06,098 INFO L78 Accepts]: Start accepts. Automaton has 2662 states and 3470 transitions. Word has length 55 [2024-11-02 12:28:06,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:28:06,098 INFO L471 AbstractCegarLoop]: Abstraction has 2662 states and 3470 transitions. [2024-11-02 12:28:06,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:28:06,098 INFO L276 IsEmpty]: Start isEmpty. Operand 2662 states and 3470 transitions. [2024-11-02 12:28:06,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-02 12:28:06,101 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:28:06,101 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:28:06,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-02 12:28:06,101 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-02 12:28:06,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:28:06,102 INFO L85 PathProgramCache]: Analyzing trace with hash 847139516, now seen corresponding path program 1 times [2024-11-02 12:28:06,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:28:06,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441658446] [2024-11-02 12:28:06,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:06,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:28:06,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:28:06,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:28:06,165 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:28:06,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441658446] [2024-11-02 12:28:06,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441658446] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:28:06,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:28:06,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:28:06,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863345424] [2024-11-02 12:28:06,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:28:06,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:28:06,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:28:06,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:28:06,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:28:06,166 INFO L87 Difference]: Start difference. First operand 2662 states and 3470 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:28:06,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:28:06,273 INFO L93 Difference]: Finished difference Result 4438 states and 5797 transitions. [2024-11-02 12:28:06,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:28:06,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2024-11-02 12:28:06,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:28:06,279 INFO L225 Difference]: With dead ends: 4438 [2024-11-02 12:28:06,279 INFO L226 Difference]: Without dead ends: 3077 [2024-11-02 12:28:06,281 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:28:06,282 INFO L432 NwaCegarLoop]: 274 mSDtfsCounter, 255 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:28:06,282 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 376 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:28:06,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3077 states. [2024-11-02 12:28:06,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3077 to 2510. [2024-11-02 12:28:06,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2510 states, 2506 states have (on average 1.3048683160415004) internal successors, (3270), 2509 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:28:06,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2510 states to 2510 states and 3270 transitions. [2024-11-02 12:28:06,368 INFO L78 Accepts]: Start accepts. Automaton has 2510 states and 3270 transitions. Word has length 56 [2024-11-02 12:28:06,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:28:06,369 INFO L471 AbstractCegarLoop]: Abstraction has 2510 states and 3270 transitions. [2024-11-02 12:28:06,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:28:06,369 INFO L276 IsEmpty]: Start isEmpty. Operand 2510 states and 3270 transitions. [2024-11-02 12:28:06,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-02 12:28:06,371 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:28:06,371 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:28:06,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-02 12:28:06,372 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-02 12:28:06,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:28:06,372 INFO L85 PathProgramCache]: Analyzing trace with hash 474120695, now seen corresponding path program 1 times [2024-11-02 12:28:06,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:28:06,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929368885] [2024-11-02 12:28:06,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:06,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:28:06,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:28:07,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:28:07,086 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:28:07,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929368885] [2024-11-02 12:28:07,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929368885] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:28:07,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:28:07,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-02 12:28:07,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223177661] [2024-11-02 12:28:07,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:28:07,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-02 12:28:07,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:28:07,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-02 12:28:07,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-02 12:28:07,088 INFO L87 Difference]: Start difference. First operand 2510 states and 3270 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:28:08,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:28:08,118 INFO L93 Difference]: Finished difference Result 3254 states and 4245 transitions. [2024-11-02 12:28:08,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-02 12:28:08,118 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2024-11-02 12:28:08,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:28:08,123 INFO L225 Difference]: With dead ends: 3254 [2024-11-02 12:28:08,124 INFO L226 Difference]: Without dead ends: 3250 [2024-11-02 12:28:08,125 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2024-11-02 12:28:08,126 INFO L432 NwaCegarLoop]: 290 mSDtfsCounter, 1342 mSDsluCounter, 1742 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1342 SdHoareTripleChecker+Valid, 2032 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-02 12:28:08,126 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1342 Valid, 2032 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-02 12:28:08,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3250 states. [2024-11-02 12:28:08,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3250 to 2506. [2024-11-02 12:28:08,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2506 states, 2503 states have (on average 1.3044346783859369) internal successors, (3265), 2505 states have internal predecessors, (3265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:28:08,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2506 states to 2506 states and 3265 transitions. [2024-11-02 12:28:08,169 INFO L78 Accepts]: Start accepts. Automaton has 2506 states and 3265 transitions. Word has length 56 [2024-11-02 12:28:08,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:28:08,170 INFO L471 AbstractCegarLoop]: Abstraction has 2506 states and 3265 transitions. [2024-11-02 12:28:08,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:28:08,170 INFO L276 IsEmpty]: Start isEmpty. Operand 2506 states and 3265 transitions. [2024-11-02 12:28:08,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-02 12:28:08,172 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:28:08,172 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:28:08,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-02 12:28:08,173 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-02 12:28:08,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:28:08,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1321631968, now seen corresponding path program 1 times [2024-11-02 12:28:08,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:28:08,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891406551] [2024-11-02 12:28:08,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:08,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:28:08,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:28:09,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:28:09,466 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:28:09,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891406551] [2024-11-02 12:28:09,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891406551] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:28:09,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:28:09,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-02 12:28:09,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403170939] [2024-11-02 12:28:09,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:28:09,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-02 12:28:09,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:28:09,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-02 12:28:09,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2024-11-02 12:28:09,470 INFO L87 Difference]: Start difference. First operand 2506 states and 3265 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:28:11,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:28:11,831 INFO L93 Difference]: Finished difference Result 3228 states and 4193 transitions. [2024-11-02 12:28:11,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-02 12:28:11,832 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2024-11-02 12:28:11,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:28:11,838 INFO L225 Difference]: With dead ends: 3228 [2024-11-02 12:28:11,838 INFO L226 Difference]: Without dead ends: 3222 [2024-11-02 12:28:11,840 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=260, Invalid=930, Unknown=0, NotChecked=0, Total=1190 [2024-11-02 12:28:11,840 INFO L432 NwaCegarLoop]: 306 mSDtfsCounter, 2102 mSDsluCounter, 3341 mSDsCounter, 0 mSdLazyCounter, 1801 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2102 SdHoareTripleChecker+Valid, 3647 SdHoareTripleChecker+Invalid, 1805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:28:11,841 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2102 Valid, 3647 Invalid, 1805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1801 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-02 12:28:11,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3222 states. [2024-11-02 12:28:11,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3222 to 2506. [2024-11-02 12:28:11,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2506 states, 2503 states have (on average 1.3040351578106273) internal successors, (3264), 2505 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:28:11,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2506 states to 2506 states and 3264 transitions. [2024-11-02 12:28:11,883 INFO L78 Accepts]: Start accepts. Automaton has 2506 states and 3264 transitions. Word has length 56 [2024-11-02 12:28:11,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:28:11,884 INFO L471 AbstractCegarLoop]: Abstraction has 2506 states and 3264 transitions. [2024-11-02 12:28:11,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:28:11,884 INFO L276 IsEmpty]: Start isEmpty. Operand 2506 states and 3264 transitions. [2024-11-02 12:28:11,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-02 12:28:11,886 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:28:11,886 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:28:11,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-02 12:28:11,887 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-02 12:28:11,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:28:11,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1854706179, now seen corresponding path program 1 times [2024-11-02 12:28:11,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:28:11,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209401711] [2024-11-02 12:28:11,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:11,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:28:11,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:28:12,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:28:12,576 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:28:12,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209401711] [2024-11-02 12:28:12,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209401711] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:28:12,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:28:12,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-02 12:28:12,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498772886] [2024-11-02 12:28:12,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:28:12,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-02 12:28:12,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:28:12,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-02 12:28:12,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-02 12:28:12,580 INFO L87 Difference]: Start difference. First operand 2506 states and 3264 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:28:13,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:28:13,437 INFO L93 Difference]: Finished difference Result 3134 states and 4089 transitions. [2024-11-02 12:28:13,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-02 12:28:13,438 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2024-11-02 12:28:13,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:28:13,447 INFO L225 Difference]: With dead ends: 3134 [2024-11-02 12:28:13,451 INFO L226 Difference]: Without dead ends: 2912 [2024-11-02 12:28:13,453 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2024-11-02 12:28:13,454 INFO L432 NwaCegarLoop]: 295 mSDtfsCounter, 1424 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1424 SdHoareTripleChecker+Valid, 1643 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:28:13,456 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1424 Valid, 1643 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 12:28:13,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2912 states. [2024-11-02 12:28:13,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2912 to 2494. [2024-11-02 12:28:13,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2494 states, 2492 states have (on average 1.3045746388443018) internal successors, (3251), 2493 states have internal predecessors, (3251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:28:13,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2494 states to 2494 states and 3251 transitions. [2024-11-02 12:28:13,499 INFO L78 Accepts]: Start accepts. Automaton has 2494 states and 3251 transitions. Word has length 56 [2024-11-02 12:28:13,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:28:13,500 INFO L471 AbstractCegarLoop]: Abstraction has 2494 states and 3251 transitions. [2024-11-02 12:28:13,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:28:13,500 INFO L276 IsEmpty]: Start isEmpty. Operand 2494 states and 3251 transitions. [2024-11-02 12:28:13,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-02 12:28:13,502 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:28:13,502 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:28:13,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-02 12:28:13,503 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-02 12:28:13,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:28:13,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1858163223, now seen corresponding path program 1 times [2024-11-02 12:28:13,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:28:13,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197190536] [2024-11-02 12:28:13,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:13,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:28:13,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:28:14,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:28:14,108 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:28:14,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197190536] [2024-11-02 12:28:14,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197190536] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:28:14,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:28:14,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-02 12:28:14,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067222179] [2024-11-02 12:28:14,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:28:14,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-02 12:28:14,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:28:14,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-02 12:28:14,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-02 12:28:14,111 INFO L87 Difference]: Start difference. First operand 2494 states and 3251 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:28:14,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:28:14,616 INFO L93 Difference]: Finished difference Result 3857 states and 5042 transitions. [2024-11-02 12:28:14,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-02 12:28:14,616 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2024-11-02 12:28:14,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:28:14,622 INFO L225 Difference]: With dead ends: 3857 [2024-11-02 12:28:14,622 INFO L226 Difference]: Without dead ends: 3371 [2024-11-02 12:28:14,624 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2024-11-02 12:28:14,625 INFO L432 NwaCegarLoop]: 232 mSDtfsCounter, 1203 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1203 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:28:14,625 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1203 Valid, 808 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:28:14,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3371 states. [2024-11-02 12:28:14,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3371 to 2443. [2024-11-02 12:28:14,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2443 states, 2442 states have (on average 1.305896805896806) internal successors, (3189), 2442 states have internal predecessors, (3189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:28:14,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2443 states to 2443 states and 3189 transitions. [2024-11-02 12:28:14,664 INFO L78 Accepts]: Start accepts. Automaton has 2443 states and 3189 transitions. Word has length 56 [2024-11-02 12:28:14,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:28:14,664 INFO L471 AbstractCegarLoop]: Abstraction has 2443 states and 3189 transitions. [2024-11-02 12:28:14,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:28:14,665 INFO L276 IsEmpty]: Start isEmpty. Operand 2443 states and 3189 transitions. [2024-11-02 12:28:14,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-02 12:28:14,667 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:28:14,667 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:28:14,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-02 12:28:14,667 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-02 12:28:14,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:28:14,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1785037930, now seen corresponding path program 1 times [2024-11-02 12:28:14,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:28:14,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542354793] [2024-11-02 12:28:14,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:14,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:28:14,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:28:14,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:28:14,797 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:28:14,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542354793] [2024-11-02 12:28:14,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542354793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:28:14,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:28:14,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 12:28:14,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898428151] [2024-11-02 12:28:14,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:28:14,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:28:14,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:28:14,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:28:14,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:28:14,799 INFO L87 Difference]: Start difference. First operand 2443 states and 3189 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:28:14,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:28:14,907 INFO L93 Difference]: Finished difference Result 2449 states and 3192 transitions. [2024-11-02 12:28:14,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:28:14,907 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2024-11-02 12:28:14,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:28:14,911 INFO L225 Difference]: With dead ends: 2449 [2024-11-02 12:28:14,911 INFO L226 Difference]: Without dead ends: 2122 [2024-11-02 12:28:14,912 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:28:14,913 INFO L432 NwaCegarLoop]: 351 mSDtfsCounter, 598 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 598 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:28:14,913 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [598 Valid, 563 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:28:14,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2122 states. [2024-11-02 12:28:14,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2122 to 2118. [2024-11-02 12:28:14,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2118 states, 2117 states have (on average 1.3032593292394898) internal successors, (2759), 2117 states have internal predecessors, (2759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:28:14,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2118 states to 2118 states and 2759 transitions. [2024-11-02 12:28:14,965 INFO L78 Accepts]: Start accepts. Automaton has 2118 states and 2759 transitions. Word has length 56 [2024-11-02 12:28:14,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:28:14,965 INFO L471 AbstractCegarLoop]: Abstraction has 2118 states and 2759 transitions. [2024-11-02 12:28:14,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:28:14,966 INFO L276 IsEmpty]: Start isEmpty. Operand 2118 states and 2759 transitions. [2024-11-02 12:28:14,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-02 12:28:14,968 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:28:14,968 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:28:14,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-02 12:28:14,969 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-02 12:28:14,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:28:14,970 INFO L85 PathProgramCache]: Analyzing trace with hash -106059015, now seen corresponding path program 1 times [2024-11-02 12:28:14,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:28:14,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284127926] [2024-11-02 12:28:14,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:14,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms