./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595bc57f-0f2c-4130-8e24-41b4d095d8d6/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595bc57f-0f2c-4130-8e24-41b4d095d8d6/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595bc57f-0f2c-4130-8e24-41b4d095d8d6/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595bc57f-0f2c-4130-8e24-41b4d095d8d6/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595bc57f-0f2c-4130-8e24-41b4d095d8d6/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595bc57f-0f2c-4130-8e24-41b4d095d8d6/bin/utaipan-verify-nQ1chXbOIh --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 fbc1afdc0c527a20ea946075190a27bee4243d56a1bede1487b2df57b3410a93 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 12:41:45,573 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 12:41:45,644 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595bc57f-0f2c-4130-8e24-41b4d095d8d6/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 12:41:45,649 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 12:41:45,649 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 12:41:45,673 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 12:41:45,674 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 12:41:45,675 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 12:41:45,675 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 12:41:45,676 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 12:41:45,677 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 12:41:45,677 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 12:41:45,678 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 12:41:45,678 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 12:41:45,679 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 12:41:45,679 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 12:41:45,680 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 12:41:45,680 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 12:41:45,681 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 12:41:45,681 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 12:41:45,682 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 12:41:45,682 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 12:41:45,683 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 12:41:45,684 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 12:41:45,684 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 12:41:45,685 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 12:41:45,685 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 12:41:45,685 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 12:41:45,686 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 12:41:45,686 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 12:41:45,686 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 12:41:45,687 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 12:41:45,687 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 12:41:45,687 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 12:41:45,688 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 12:41:45,688 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 12:41:45,688 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 12:41:45,688 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:41:45,689 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 12:41:45,689 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 12:41:45,689 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 12:41:45,689 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 12:41:45,690 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 12:41:45,690 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 12:41:45,690 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 12:41:45,690 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 12:41:45,690 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 12:41:45,691 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_595bc57f-0f2c-4130-8e24-41b4d095d8d6/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595bc57f-0f2c-4130-8e24-41b4d095d8d6/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fbc1afdc0c527a20ea946075190a27bee4243d56a1bede1487b2df57b3410a93 [2023-12-02 12:41:45,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 12:41:45,948 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 12:41:45,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 12:41:45,952 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 12:41:45,952 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 12:41:45,954 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595bc57f-0f2c-4130-8e24-41b4d095d8d6/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2023-12-02 12:41:48,719 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 12:41:48,950 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 12:41:48,951 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595bc57f-0f2c-4130-8e24-41b4d095d8d6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2023-12-02 12:41:48,964 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595bc57f-0f2c-4130-8e24-41b4d095d8d6/bin/utaipan-verify-nQ1chXbOIh/data/97fa1d771/565b272f331144ceabe09f1061812a07/FLAG19800b439 [2023-12-02 12:41:48,977 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595bc57f-0f2c-4130-8e24-41b4d095d8d6/bin/utaipan-verify-nQ1chXbOIh/data/97fa1d771/565b272f331144ceabe09f1061812a07 [2023-12-02 12:41:48,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 12:41:48,981 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 12:41:48,982 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 12:41:48,983 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 12:41:48,988 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 12:41:48,989 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:41:48" (1/1) ... [2023-12-02 12:41:48,990 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28ebdfa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:41:48, skipping insertion in model container [2023-12-02 12:41:48,990 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:41:48" (1/1) ... [2023-12-02 12:41:49,054 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 12:41:49,304 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595bc57f-0f2c-4130-8e24-41b4d095d8d6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c[10019,10032] [2023-12-02 12:41:49,387 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:41:49,403 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 12:41:49,488 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595bc57f-0f2c-4130-8e24-41b4d095d8d6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c[10019,10032] [2023-12-02 12:41:49,533 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:41:49,552 INFO L206 MainTranslator]: Completed translation [2023-12-02 12:41:49,552 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:41:49 WrapperNode [2023-12-02 12:41:49,553 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 12:41:49,553 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 12:41:49,554 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 12:41:49,554 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 12:41:49,560 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:41:49" (1/1) ... [2023-12-02 12:41:49,574 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:41:49" (1/1) ... [2023-12-02 12:41:49,613 INFO L138 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1035 [2023-12-02 12:41:49,613 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 12:41:49,614 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 12:41:49,614 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 12:41:49,614 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 12:41:49,622 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:41:49" (1/1) ... [2023-12-02 12:41:49,622 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:41:49" (1/1) ... [2023-12-02 12:41:49,628 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:41:49" (1/1) ... [2023-12-02 12:41:49,629 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:41:49" (1/1) ... [2023-12-02 12:41:49,648 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:41:49" (1/1) ... [2023-12-02 12:41:49,657 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:41:49" (1/1) ... [2023-12-02 12:41:49,661 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:41:49" (1/1) ... [2023-12-02 12:41:49,666 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:41:49" (1/1) ... [2023-12-02 12:41:49,673 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 12:41:49,674 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 12:41:49,674 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 12:41:49,674 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 12:41:49,676 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:41:49" (1/1) ... [2023-12-02 12:41:49,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:41:49,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595bc57f-0f2c-4130-8e24-41b4d095d8d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:41:49,725 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595bc57f-0f2c-4130-8e24-41b4d095d8d6/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 12:41:49,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595bc57f-0f2c-4130-8e24-41b4d095d8d6/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 12:41:49,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 12:41:49,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 12:41:49,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 12:41:49,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 12:41:49,915 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 12:41:49,918 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 12:41:50,661 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 12:41:50,874 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 12:41:50,874 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 12:41:50,876 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:41:50 BoogieIcfgContainer [2023-12-02 12:41:50,876 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 12:41:50,878 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 12:41:50,878 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 12:41:50,881 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 12:41:50,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:41:48" (1/3) ... [2023-12-02 12:41:50,882 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@353c370c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:41:50, skipping insertion in model container [2023-12-02 12:41:50,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:41:49" (2/3) ... [2023-12-02 12:41:50,882 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@353c370c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:41:50, skipping insertion in model container [2023-12-02 12:41:50,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:41:50" (3/3) ... [2023-12-02 12:41:50,883 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2023-12-02 12:41:50,898 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 12:41:50,898 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 12:41:50,941 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 12:41:50,946 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7a7dcfc3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 12:41:50,946 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 12:41:50,952 INFO L276 IsEmpty]: Start isEmpty. Operand has 198 states, 196 states have (on average 1.7091836734693877) internal successors, (335), 197 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:41:50,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-02 12:41:50,961 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:41:50,962 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:41:50,962 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:41:50,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:41:50,967 INFO L85 PathProgramCache]: Analyzing trace with hash 312939315, now seen corresponding path program 1 times [2023-12-02 12:41:50,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:41:50,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22725585] [2023-12-02 12:41:50,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:41:50,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:41:51,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:41:51,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:41:51,681 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:41:51,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22725585] [2023-12-02 12:41:51,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22725585] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:41:51,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:41:51,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-02 12:41:51,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965593281] [2023-12-02 12:41:51,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:41:51,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 12:41:51,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:41:51,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 12:41:51,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-02 12:41:51,718 INFO L87 Difference]: Start difference. First operand has 198 states, 196 states have (on average 1.7091836734693877) internal successors, (335), 197 states have internal predecessors, (335), 0 states have call successors, (0), 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 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:41:52,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:41:52,226 INFO L93 Difference]: Finished difference Result 785 states and 1260 transitions. [2023-12-02 12:41:52,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 12:41:52,229 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2023-12-02 12:41:52,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:41:52,247 INFO L225 Difference]: With dead ends: 785 [2023-12-02 12:41:52,247 INFO L226 Difference]: Without dead ends: 672 [2023-12-02 12:41:52,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-02 12:41:52,255 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 1381 mSDsluCounter, 1162 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1381 SdHoareTripleChecker+Valid, 1687 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 12:41:52,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1381 Valid, 1687 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 12:41:52,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2023-12-02 12:41:52,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 662. [2023-12-02 12:41:52,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 661 states have (on average 1.416036308623298) internal successors, (936), 661 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:41:52,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 936 transitions. [2023-12-02 12:41:52,335 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 936 transitions. Word has length 82 [2023-12-02 12:41:52,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:41:52,336 INFO L495 AbstractCegarLoop]: Abstraction has 662 states and 936 transitions. [2023-12-02 12:41:52,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:41:52,337 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 936 transitions. [2023-12-02 12:41:52,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-02 12:41:52,342 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:41:52,342 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:41:52,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 12:41:52,343 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:41:52,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:41:52,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1772154541, now seen corresponding path program 1 times [2023-12-02 12:41:52,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:41:52,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423744652] [2023-12-02 12:41:52,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:41:52,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:41:52,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:41:52,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:41:52,549 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:41:52,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423744652] [2023-12-02 12:41:52,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423744652] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:41:52,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:41:52,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 12:41:52,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786280945] [2023-12-02 12:41:52,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:41:52,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 12:41:52,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:41:52,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 12:41:52,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 12:41:52,554 INFO L87 Difference]: Start difference. First operand 662 states and 936 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:41:52,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:41:52,875 INFO L93 Difference]: Finished difference Result 1602 states and 2324 transitions. [2023-12-02 12:41:52,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 12:41:52,876 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2023-12-02 12:41:52,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:41:52,882 INFO L225 Difference]: With dead ends: 1602 [2023-12-02 12:41:52,883 INFO L226 Difference]: Without dead ends: 1060 [2023-12-02 12:41:52,886 INFO L412 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 [2023-12-02 12:41:52,887 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 686 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 12:41:52,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [686 Valid, 293 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 12:41:52,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2023-12-02 12:41:52,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 1058. [2023-12-02 12:41:52,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1058 states, 1057 states have (on average 1.445600756859035) internal successors, (1528), 1057 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:41:52,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 1528 transitions. [2023-12-02 12:41:52,926 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 1528 transitions. Word has length 83 [2023-12-02 12:41:52,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:41:52,926 INFO L495 AbstractCegarLoop]: Abstraction has 1058 states and 1528 transitions. [2023-12-02 12:41:52,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:41:52,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 1528 transitions. [2023-12-02 12:41:52,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-02 12:41:52,930 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:41:52,931 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:41:52,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 12:41:52,931 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:41:52,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:41:52,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1160505180, now seen corresponding path program 1 times [2023-12-02 12:41:52,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:41:52,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394524794] [2023-12-02 12:41:52,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:41:52,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:41:52,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:41:53,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:41:53,137 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:41:53,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394524794] [2023-12-02 12:41:53,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394524794] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:41:53,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:41:53,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 12:41:53,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439752558] [2023-12-02 12:41:53,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:41:53,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 12:41:53,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:41:53,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 12:41:53,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 12:41:53,140 INFO L87 Difference]: Start difference. First operand 1058 states and 1528 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:41:53,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:41:53,424 INFO L93 Difference]: Finished difference Result 2753 states and 4057 transitions. [2023-12-02 12:41:53,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 12:41:53,424 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2023-12-02 12:41:53,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:41:53,435 INFO L225 Difference]: With dead ends: 2753 [2023-12-02 12:41:53,435 INFO L226 Difference]: Without dead ends: 1852 [2023-12-02 12:41:53,437 INFO L412 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 [2023-12-02 12:41:53,439 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 669 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 12:41:53,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 301 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 12:41:53,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1852 states. [2023-12-02 12:41:53,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1852 to 1850. [2023-12-02 12:41:53,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1850 states, 1849 states have (on average 1.4656571119524067) internal successors, (2710), 1849 states have internal predecessors, (2710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:41:53,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1850 states to 1850 states and 2710 transitions. [2023-12-02 12:41:53,496 INFO L78 Accepts]: Start accepts. Automaton has 1850 states and 2710 transitions. Word has length 83 [2023-12-02 12:41:53,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:41:53,496 INFO L495 AbstractCegarLoop]: Abstraction has 1850 states and 2710 transitions. [2023-12-02 12:41:53,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:41:53,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1850 states and 2710 transitions. [2023-12-02 12:41:53,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-02 12:41:53,498 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:41:53,498 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:41:53,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 12:41:53,499 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:41:53,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:41:53,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1304619595, now seen corresponding path program 1 times [2023-12-02 12:41:53,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:41:53,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599466230] [2023-12-02 12:41:53,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:41:53,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:41:53,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:41:53,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:41:53,652 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:41:53,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599466230] [2023-12-02 12:41:53,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599466230] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:41:53,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:41:53,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 12:41:53,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248426825] [2023-12-02 12:41:53,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:41:53,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 12:41:53,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:41:53,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 12:41:53,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 12:41:53,655 INFO L87 Difference]: Start difference. First operand 1850 states and 2710 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:41:53,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:41:53,950 INFO L93 Difference]: Finished difference Result 5088 states and 7558 transitions. [2023-12-02 12:41:53,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 12:41:53,951 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2023-12-02 12:41:53,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:41:53,965 INFO L225 Difference]: With dead ends: 5088 [2023-12-02 12:41:53,965 INFO L226 Difference]: Without dead ends: 3436 [2023-12-02 12:41:53,967 INFO L412 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 [2023-12-02 12:41:53,969 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 687 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 12:41:53,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [687 Valid, 302 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 12:41:53,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3436 states. [2023-12-02 12:41:54,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3436 to 3434. [2023-12-02 12:41:54,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3434 states, 3433 states have (on average 1.476842411884649) internal successors, (5070), 3433 states have internal predecessors, (5070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:41:54,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3434 states to 3434 states and 5070 transitions. [2023-12-02 12:41:54,034 INFO L78 Accepts]: Start accepts. Automaton has 3434 states and 5070 transitions. Word has length 83 [2023-12-02 12:41:54,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:41:54,034 INFO L495 AbstractCegarLoop]: Abstraction has 3434 states and 5070 transitions. [2023-12-02 12:41:54,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:41:54,035 INFO L276 IsEmpty]: Start isEmpty. Operand 3434 states and 5070 transitions. [2023-12-02 12:41:54,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-02 12:41:54,036 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:41:54,036 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:41:54,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 12:41:54,036 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:41:54,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:41:54,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1914142782, now seen corresponding path program 1 times [2023-12-02 12:41:54,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:41:54,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375573409] [2023-12-02 12:41:54,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:41:54,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:41:54,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:41:54,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:41:54,155 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:41:54,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375573409] [2023-12-02 12:41:54,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375573409] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:41:54,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:41:54,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 12:41:54,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438604807] [2023-12-02 12:41:54,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:41:54,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 12:41:54,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:41:54,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 12:41:54,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 12:41:54,159 INFO L87 Difference]: Start difference. First operand 3434 states and 5070 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:41:54,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:41:54,478 INFO L93 Difference]: Finished difference Result 9948 states and 14786 transitions. [2023-12-02 12:41:54,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 12:41:54,479 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2023-12-02 12:41:54,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:41:54,506 INFO L225 Difference]: With dead ends: 9948 [2023-12-02 12:41:54,506 INFO L226 Difference]: Without dead ends: 6604 [2023-12-02 12:41:54,509 INFO L412 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 [2023-12-02 12:41:54,510 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 679 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 679 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 12:41:54,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [679 Valid, 285 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 12:41:54,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6604 states. [2023-12-02 12:41:54,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6604 to 6602. [2023-12-02 12:41:54,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6602 states, 6601 states have (on average 1.477048931980003) internal successors, (9750), 6601 states have internal predecessors, (9750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:41:54,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6602 states to 6602 states and 9750 transitions. [2023-12-02 12:41:54,634 INFO L78 Accepts]: Start accepts. Automaton has 6602 states and 9750 transitions. Word has length 83 [2023-12-02 12:41:54,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:41:54,634 INFO L495 AbstractCegarLoop]: Abstraction has 6602 states and 9750 transitions. [2023-12-02 12:41:54,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:41:54,635 INFO L276 IsEmpty]: Start isEmpty. Operand 6602 states and 9750 transitions. [2023-12-02 12:41:54,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-02 12:41:54,636 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:41:54,636 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:41:54,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 12:41:54,636 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:41:54,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:41:54,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1955259377, now seen corresponding path program 1 times [2023-12-02 12:41:54,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:41:54,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441915282] [2023-12-02 12:41:54,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:41:54,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:41:54,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:41:54,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:41:54,780 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:41:54,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441915282] [2023-12-02 12:41:54,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441915282] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:41:54,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:41:54,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 12:41:54,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102232846] [2023-12-02 12:41:54,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:41:54,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 12:41:54,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:41:54,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 12:41:54,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 12:41:54,783 INFO L87 Difference]: Start difference. First operand 6602 states and 9750 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:41:55,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:41:55,120 INFO L93 Difference]: Finished difference Result 19475 states and 28863 transitions. [2023-12-02 12:41:55,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 12:41:55,121 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2023-12-02 12:41:55,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:41:55,176 INFO L225 Difference]: With dead ends: 19475 [2023-12-02 12:41:55,176 INFO L226 Difference]: Without dead ends: 12940 [2023-12-02 12:41:55,183 INFO L412 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 [2023-12-02 12:41:55,184 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 684 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 12:41:55,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [684 Valid, 277 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 12:41:55,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12940 states. [2023-12-02 12:41:55,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12940 to 12938. [2023-12-02 12:41:55,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12938 states, 12937 states have (on average 1.4707428306407977) internal successors, (19027), 12937 states have internal predecessors, (19027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:41:55,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12938 states to 12938 states and 19027 transitions. [2023-12-02 12:41:55,433 INFO L78 Accepts]: Start accepts. Automaton has 12938 states and 19027 transitions. Word has length 83 [2023-12-02 12:41:55,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:41:55,433 INFO L495 AbstractCegarLoop]: Abstraction has 12938 states and 19027 transitions. [2023-12-02 12:41:55,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:41:55,433 INFO L276 IsEmpty]: Start isEmpty. Operand 12938 states and 19027 transitions. [2023-12-02 12:41:55,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-02 12:41:55,434 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:41:55,434 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:41:55,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 12:41:55,434 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:41:55,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:41:55,435 INFO L85 PathProgramCache]: Analyzing trace with hash -143606304, now seen corresponding path program 1 times [2023-12-02 12:41:55,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:41:55,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279050061] [2023-12-02 12:41:55,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:41:55,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:41:55,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:41:55,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:41:55,531 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:41:55,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279050061] [2023-12-02 12:41:55,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279050061] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:41:55,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:41:55,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 12:41:55,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889415587] [2023-12-02 12:41:55,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:41:55,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 12:41:55,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:41:55,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 12:41:55,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 12:41:55,533 INFO L87 Difference]: Start difference. First operand 12938 states and 19027 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:41:55,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:41:55,907 INFO L93 Difference]: Finished difference Result 36707 states and 54048 transitions. [2023-12-02 12:41:55,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 12:41:55,908 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2023-12-02 12:41:55,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:41:55,956 INFO L225 Difference]: With dead ends: 36707 [2023-12-02 12:41:55,957 INFO L226 Difference]: Without dead ends: 23820 [2023-12-02 12:41:55,975 INFO L412 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 [2023-12-02 12:41:55,976 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 689 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 12:41:55,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 269 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 12:41:56,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23820 states. [2023-12-02 12:41:56,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23820 to 23818. [2023-12-02 12:41:56,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23818 states, 23817 states have (on average 1.4591678213041106) internal successors, (34753), 23817 states have internal predecessors, (34753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:41:56,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23818 states to 23818 states and 34753 transitions. [2023-12-02 12:41:56,458 INFO L78 Accepts]: Start accepts. Automaton has 23818 states and 34753 transitions. Word has length 83 [2023-12-02 12:41:56,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:41:56,459 INFO L495 AbstractCegarLoop]: Abstraction has 23818 states and 34753 transitions. [2023-12-02 12:41:56,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:41:56,460 INFO L276 IsEmpty]: Start isEmpty. Operand 23818 states and 34753 transitions. [2023-12-02 12:41:56,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-02 12:41:56,462 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:41:56,462 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:41:56,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 12:41:56,462 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:41:56,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:41:56,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1511691231, now seen corresponding path program 1 times [2023-12-02 12:41:56,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:41:56,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647976962] [2023-12-02 12:41:56,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:41:56,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:41:56,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:41:58,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:41:58,612 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:41:58,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647976962] [2023-12-02 12:41:58,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647976962] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:41:58,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:41:58,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-12-02 12:41:58,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329251371] [2023-12-02 12:41:58,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:41:58,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-02 12:41:58,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:41:58,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-02 12:41:58,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2023-12-02 12:41:58,615 INFO L87 Difference]: Start difference. First operand 23818 states and 34753 transitions. Second operand has 21 states, 21 states have (on average 4.0) internal successors, (84), 21 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:42:00,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:42:00,392 INFO L93 Difference]: Finished difference Result 45931 states and 66748 transitions. [2023-12-02 12:42:00,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-02 12:42:00,393 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.0) internal successors, (84), 21 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2023-12-02 12:42:00,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:42:00,479 INFO L225 Difference]: With dead ends: 45931 [2023-12-02 12:42:00,480 INFO L226 Difference]: Without dead ends: 36393 [2023-12-02 12:42:00,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=296, Invalid=894, Unknown=0, NotChecked=0, Total=1190 [2023-12-02 12:42:00,500 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 1553 mSDsluCounter, 2058 mSDsCounter, 0 mSdLazyCounter, 1066 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1553 SdHoareTripleChecker+Valid, 2351 SdHoareTripleChecker+Invalid, 1083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:42:00,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1553 Valid, 2351 Invalid, 1083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1066 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 12:42:00,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36393 states. [2023-12-02 12:42:00,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36393 to 30429. [2023-12-02 12:42:00,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30429 states, 30428 states have (on average 1.4517220980675694) internal successors, (44173), 30428 states have internal predecessors, (44173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:42:00,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30429 states to 30429 states and 44173 transitions. [2023-12-02 12:42:00,958 INFO L78 Accepts]: Start accepts. Automaton has 30429 states and 44173 transitions. Word has length 84 [2023-12-02 12:42:00,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:42:00,959 INFO L495 AbstractCegarLoop]: Abstraction has 30429 states and 44173 transitions. [2023-12-02 12:42:00,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.0) internal successors, (84), 21 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:42:00,959 INFO L276 IsEmpty]: Start isEmpty. Operand 30429 states and 44173 transitions. [2023-12-02 12:42:00,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-02 12:42:00,960 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:42:00,960 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:42:00,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 12:42:00,960 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:42:00,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:42:00,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1894992897, now seen corresponding path program 1 times [2023-12-02 12:42:00,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:42:00,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992419078] [2023-12-02 12:42:00,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:42:00,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:42:01,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:42:02,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:42:02,676 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:42:02,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992419078] [2023-12-02 12:42:02,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992419078] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:42:02,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:42:02,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-02 12:42:02,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871499114] [2023-12-02 12:42:02,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:42:02,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-02 12:42:02,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:42:02,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-02 12:42:02,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2023-12-02 12:42:02,679 INFO L87 Difference]: Start difference. First operand 30429 states and 44173 transitions. Second operand has 20 states, 20 states have (on average 4.2) internal successors, (84), 20 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:42:03,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:42:03,620 INFO L93 Difference]: Finished difference Result 43642 states and 63173 transitions. [2023-12-02 12:42:03,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 12:42:03,621 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.2) internal successors, (84), 20 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2023-12-02 12:42:03,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:42:03,676 INFO L225 Difference]: With dead ends: 43642 [2023-12-02 12:42:03,676 INFO L226 Difference]: Without dead ends: 38712 [2023-12-02 12:42:03,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=223, Invalid=707, Unknown=0, NotChecked=0, Total=930 [2023-12-02 12:42:03,690 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 1543 mSDsluCounter, 1220 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 1639 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 12:42:03,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1543 Valid, 1639 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 12:42:03,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38712 states. [2023-12-02 12:42:04,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38712 to 34994. [2023-12-02 12:42:04,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34994 states, 34993 states have (on average 1.4491469722515933) internal successors, (50710), 34993 states have internal predecessors, (50710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:42:04,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34994 states to 34994 states and 50710 transitions. [2023-12-02 12:42:04,205 INFO L78 Accepts]: Start accepts. Automaton has 34994 states and 50710 transitions. Word has length 84 [2023-12-02 12:42:04,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:42:04,205 INFO L495 AbstractCegarLoop]: Abstraction has 34994 states and 50710 transitions. [2023-12-02 12:42:04,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.2) internal successors, (84), 20 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:42:04,205 INFO L276 IsEmpty]: Start isEmpty. Operand 34994 states and 50710 transitions. [2023-12-02 12:42:04,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-02 12:42:04,206 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:42:04,207 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:42:04,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 12:42:04,207 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:42:04,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:42:04,208 INFO L85 PathProgramCache]: Analyzing trace with hash 931695647, now seen corresponding path program 1 times [2023-12-02 12:42:04,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:42:04,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023506875] [2023-12-02 12:42:04,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:42:04,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:42:04,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:42:06,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:42:06,220 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:42:06,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023506875] [2023-12-02 12:42:06,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023506875] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:42:06,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:42:06,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2023-12-02 12:42:06,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393647961] [2023-12-02 12:42:06,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:42:06,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-02 12:42:06,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:42:06,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-02 12:42:06,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2023-12-02 12:42:06,222 INFO L87 Difference]: Start difference. First operand 34994 states and 50710 transitions. Second operand has 25 states, 25 states have (on average 3.36) internal successors, (84), 24 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:42:08,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:42:08,432 INFO L93 Difference]: Finished difference Result 43189 states and 62405 transitions. [2023-12-02 12:42:08,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-02 12:42:08,433 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.36) internal successors, (84), 24 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2023-12-02 12:42:08,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:42:08,479 INFO L225 Difference]: With dead ends: 43189 [2023-12-02 12:42:08,479 INFO L226 Difference]: Without dead ends: 43187 [2023-12-02 12:42:08,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=366, Invalid=1356, Unknown=0, NotChecked=0, Total=1722 [2023-12-02 12:42:08,489 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 2013 mSDsluCounter, 1554 mSDsCounter, 0 mSdLazyCounter, 2041 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2013 SdHoareTripleChecker+Valid, 1800 SdHoareTripleChecker+Invalid, 2054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-02 12:42:08,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2013 Valid, 1800 Invalid, 2054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2041 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-02 12:42:08,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43187 states. [2023-12-02 12:42:08,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43187 to 39884. [2023-12-02 12:42:08,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39884 states, 39883 states have (on average 1.4463555901010456) internal successors, (57685), 39883 states have internal predecessors, (57685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:42:08,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39884 states to 39884 states and 57685 transitions. [2023-12-02 12:42:08,898 INFO L78 Accepts]: Start accepts. Automaton has 39884 states and 57685 transitions. Word has length 84 [2023-12-02 12:42:08,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:42:08,899 INFO L495 AbstractCegarLoop]: Abstraction has 39884 states and 57685 transitions. [2023-12-02 12:42:08,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.36) internal successors, (84), 24 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:42:08,899 INFO L276 IsEmpty]: Start isEmpty. Operand 39884 states and 57685 transitions. [2023-12-02 12:42:08,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-02 12:42:08,901 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:42:08,901 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:42:08,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-02 12:42:08,901 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:42:08,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:42:08,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1015163839, now seen corresponding path program 1 times [2023-12-02 12:42:08,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:42:08,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831606583] [2023-12-02 12:42:08,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:42:08,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:42:09,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:42:10,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:42:10,644 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:42:10,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831606583] [2023-12-02 12:42:10,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831606583] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:42:10,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:42:10,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-02 12:42:10,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176250148] [2023-12-02 12:42:10,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:42:10,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-02 12:42:10,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:42:10,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-02 12:42:10,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2023-12-02 12:42:10,646 INFO L87 Difference]: Start difference. First operand 39884 states and 57685 transitions. Second operand has 20 states, 20 states have (on average 4.2) internal successors, (84), 20 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:42:11,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:42:11,972 INFO L93 Difference]: Finished difference Result 66015 states and 95566 transitions. [2023-12-02 12:42:11,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-02 12:42:11,972 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.2) internal successors, (84), 20 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2023-12-02 12:42:11,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:42:12,116 INFO L225 Difference]: With dead ends: 66015 [2023-12-02 12:42:12,116 INFO L226 Difference]: Without dead ends: 66013 [2023-12-02 12:42:12,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=287, Invalid=835, Unknown=0, NotChecked=0, Total=1122 [2023-12-02 12:42:12,123 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 1408 mSDsluCounter, 3470 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1408 SdHoareTripleChecker+Valid, 3903 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 12:42:12,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1408 Valid, 3903 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1039 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 12:42:12,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66013 states. [2023-12-02 12:42:12,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66013 to 50919. [2023-12-02 12:42:12,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50919 states, 50918 states have (on average 1.4468557288188852) internal successors, (73671), 50918 states have internal predecessors, (73671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:42:12,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50919 states to 50919 states and 73671 transitions. [2023-12-02 12:42:12,631 INFO L78 Accepts]: Start accepts. Automaton has 50919 states and 73671 transitions. Word has length 84 [2023-12-02 12:42:12,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:42:12,631 INFO L495 AbstractCegarLoop]: Abstraction has 50919 states and 73671 transitions. [2023-12-02 12:42:12,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.2) internal successors, (84), 20 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:42:12,631 INFO L276 IsEmpty]: Start isEmpty. Operand 50919 states and 73671 transitions. [2023-12-02 12:42:12,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-02 12:42:12,633 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:42:12,633 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:42:12,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-02 12:42:12,633 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:42:12,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:42:12,634 INFO L85 PathProgramCache]: Analyzing trace with hash -602702945, now seen corresponding path program 1 times [2023-12-02 12:42:12,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:42:12,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085885036] [2023-12-02 12:42:12,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:42:12,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:42:12,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:42:14,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:42:14,047 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:42:14,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085885036] [2023-12-02 12:42:14,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085885036] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:42:14,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:42:14,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-02 12:42:14,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374576002] [2023-12-02 12:42:14,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:42:14,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-02 12:42:14,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:42:14,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-02 12:42:14,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2023-12-02 12:42:14,049 INFO L87 Difference]: Start difference. First operand 50919 states and 73671 transitions. Second operand has 20 states, 20 states have (on average 4.2) internal successors, (84), 20 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:42:15,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:42:15,777 INFO L93 Difference]: Finished difference Result 83591 states and 121149 transitions. [2023-12-02 12:42:15,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-02 12:42:15,778 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.2) internal successors, (84), 20 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2023-12-02 12:42:15,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:42:15,869 INFO L225 Difference]: With dead ends: 83591 [2023-12-02 12:42:15,869 INFO L226 Difference]: Without dead ends: 83589 [2023-12-02 12:42:15,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=291, Invalid=831, Unknown=0, NotChecked=0, Total=1122 [2023-12-02 12:42:15,887 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 1705 mSDsluCounter, 3216 mSDsCounter, 0 mSdLazyCounter, 1594 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1705 SdHoareTripleChecker+Valid, 3644 SdHoareTripleChecker+Invalid, 1605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:42:15,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1705 Valid, 3644 Invalid, 1605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1594 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 12:42:16,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83589 states. [2023-12-02 12:42:16,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83589 to 54918. [2023-12-02 12:42:16,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54918 states, 54917 states have (on average 1.447402443687747) internal successors, (79487), 54917 states have internal predecessors, (79487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:42:16,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54918 states to 54918 states and 79487 transitions. [2023-12-02 12:42:16,790 INFO L78 Accepts]: Start accepts. Automaton has 54918 states and 79487 transitions. Word has length 84 [2023-12-02 12:42:16,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:42:16,790 INFO L495 AbstractCegarLoop]: Abstraction has 54918 states and 79487 transitions. [2023-12-02 12:42:16,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.2) internal successors, (84), 20 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:42:16,790 INFO L276 IsEmpty]: Start isEmpty. Operand 54918 states and 79487 transitions. [2023-12-02 12:42:16,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-02 12:42:16,792 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:42:16,792 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:42:16,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-02 12:42:16,792 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:42:16,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:42:16,793 INFO L85 PathProgramCache]: Analyzing trace with hash -526482561, now seen corresponding path program 1 times [2023-12-02 12:42:16,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:42:16,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808574835] [2023-12-02 12:42:16,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:42:16,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:42:16,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:42:18,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:42:18,063 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:42:18,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808574835] [2023-12-02 12:42:18,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808574835] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:42:18,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:42:18,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-02 12:42:18,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750772321] [2023-12-02 12:42:18,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:42:18,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-02 12:42:18,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:42:18,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-02 12:42:18,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2023-12-02 12:42:18,065 INFO L87 Difference]: Start difference. First operand 54918 states and 79487 transitions. Second operand has 20 states, 20 states have (on average 4.2) internal successors, (84), 20 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:42:19,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:42:19,786 INFO L93 Difference]: Finished difference Result 93901 states and 136267 transitions. [2023-12-02 12:42:19,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-02 12:42:19,787 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.2) internal successors, (84), 20 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2023-12-02 12:42:19,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:42:19,902 INFO L225 Difference]: With dead ends: 93901 [2023-12-02 12:42:19,902 INFO L226 Difference]: Without dead ends: 93899 [2023-12-02 12:42:19,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2023-12-02 12:42:19,925 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 1587 mSDsluCounter, 2809 mSDsCounter, 0 mSdLazyCounter, 1365 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1587 SdHoareTripleChecker+Valid, 3237 SdHoareTripleChecker+Invalid, 1376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 12:42:19,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1587 Valid, 3237 Invalid, 1376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1365 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 12:42:19,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93899 states. [2023-12-02 12:42:20,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93899 to 58658. [2023-12-02 12:42:20,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58658 states, 58657 states have (on average 1.4482158992106653) internal successors, (84948), 58657 states have internal predecessors, (84948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:42:20,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58658 states to 58658 states and 84948 transitions. [2023-12-02 12:42:20,741 INFO L78 Accepts]: Start accepts. Automaton has 58658 states and 84948 transitions. Word has length 84 [2023-12-02 12:42:20,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:42:20,741 INFO L495 AbstractCegarLoop]: Abstraction has 58658 states and 84948 transitions. [2023-12-02 12:42:20,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.2) internal successors, (84), 20 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:42:20,741 INFO L276 IsEmpty]: Start isEmpty. Operand 58658 states and 84948 transitions. [2023-12-02 12:42:20,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-02 12:42:20,743 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:42:20,743 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:42:20,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-02 12:42:20,743 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:42:20,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:42:20,744 INFO L85 PathProgramCache]: Analyzing trace with hash -945636949, now seen corresponding path program 1 times [2023-12-02 12:42:20,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:42:20,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895089829] [2023-12-02 12:42:20,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:42:20,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:42:20,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:42:22,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:42:22,457 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:42:22,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895089829] [2023-12-02 12:42:22,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895089829] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:42:22,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:42:22,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-12-02 12:42:22,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527101624] [2023-12-02 12:42:22,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:42:22,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-02 12:42:22,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:42:22,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-02 12:42:22,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2023-12-02 12:42:22,459 INFO L87 Difference]: Start difference. First operand 58658 states and 84948 transitions. Second operand has 21 states, 21 states have (on average 4.095238095238095) internal successors, (86), 21 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:42:23,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:42:23,797 INFO L93 Difference]: Finished difference Result 71894 states and 103974 transitions. [2023-12-02 12:42:23,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-02 12:42:23,798 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.095238095238095) internal successors, (86), 21 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2023-12-02 12:42:23,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:42:23,883 INFO L225 Difference]: With dead ends: 71894 [2023-12-02 12:42:23,883 INFO L226 Difference]: Without dead ends: 66964 [2023-12-02 12:42:23,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=296, Invalid=894, Unknown=0, NotChecked=0, Total=1190 [2023-12-02 12:42:23,903 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 1397 mSDsluCounter, 3099 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1397 SdHoareTripleChecker+Valid, 3522 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 12:42:23,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1397 Valid, 3522 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 12:42:23,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66964 states. [2023-12-02 12:42:24,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66964 to 58664. [2023-12-02 12:42:24,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58664 states, 58663 states have (on average 1.4481871026030035) internal successors, (84955), 58663 states have internal predecessors, (84955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:42:24,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58664 states to 58664 states and 84955 transitions. [2023-12-02 12:42:24,795 INFO L78 Accepts]: Start accepts. Automaton has 58664 states and 84955 transitions. Word has length 86 [2023-12-02 12:42:24,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:42:24,795 INFO L495 AbstractCegarLoop]: Abstraction has 58664 states and 84955 transitions. [2023-12-02 12:42:24,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.095238095238095) internal successors, (86), 21 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:42:24,796 INFO L276 IsEmpty]: Start isEmpty. Operand 58664 states and 84955 transitions. [2023-12-02 12:42:24,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-02 12:42:24,797 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:42:24,797 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:42:24,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-02 12:42:24,797 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:42:24,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:42:24,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1881051595, now seen corresponding path program 1 times [2023-12-02 12:42:24,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:42:24,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445233047] [2023-12-02 12:42:24,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:42:24,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:42:24,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:42:26,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:42:26,558 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:42:26,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445233047] [2023-12-02 12:42:26,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445233047] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:42:26,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:42:26,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2023-12-02 12:42:26,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090008191] [2023-12-02 12:42:26,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:42:26,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-02 12:42:26,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:42:26,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-02 12:42:26,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2023-12-02 12:42:26,561 INFO L87 Difference]: Start difference. First operand 58664 states and 84955 transitions. Second operand has 26 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 25 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:42:29,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:42:29,286 INFO L93 Difference]: Finished difference Result 71794 states and 103678 transitions. [2023-12-02 12:42:29,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-02 12:42:29,287 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 25 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2023-12-02 12:42:29,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:42:29,376 INFO L225 Difference]: With dead ends: 71794 [2023-12-02 12:42:29,376 INFO L226 Difference]: Without dead ends: 71792 [2023-12-02 12:42:29,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=406, Invalid=1486, Unknown=0, NotChecked=0, Total=1892 [2023-12-02 12:42:29,394 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 1890 mSDsluCounter, 2484 mSDsCounter, 0 mSdLazyCounter, 2976 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1890 SdHoareTripleChecker+Valid, 2728 SdHoareTripleChecker+Invalid, 2988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-02 12:42:29,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1890 Valid, 2728 Invalid, 2988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 2976 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-02 12:42:29,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71792 states. [2023-12-02 12:42:30,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71792 to 58677. [2023-12-02 12:42:30,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58677 states, 58676 states have (on average 1.448138932442566) internal successors, (84971), 58676 states have internal predecessors, (84971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:42:30,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58677 states to 58677 states and 84971 transitions. [2023-12-02 12:42:30,206 INFO L78 Accepts]: Start accepts. Automaton has 58677 states and 84971 transitions. Word has length 86 [2023-12-02 12:42:30,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:42:30,206 INFO L495 AbstractCegarLoop]: Abstraction has 58677 states and 84971 transitions. [2023-12-02 12:42:30,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 25 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:42:30,206 INFO L276 IsEmpty]: Start isEmpty. Operand 58677 states and 84971 transitions. [2023-12-02 12:42:30,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-02 12:42:30,207 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:42:30,207 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:42:30,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-02 12:42:30,208 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:42:30,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:42:30,208 INFO L85 PathProgramCache]: Analyzing trace with hash 822684139, now seen corresponding path program 1 times [2023-12-02 12:42:30,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:42:30,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359899010] [2023-12-02 12:42:30,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:42:30,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:42:30,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:42:31,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:42:31,884 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:42:31,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359899010] [2023-12-02 12:42:31,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359899010] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:42:31,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:42:31,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2023-12-02 12:42:31,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96454823] [2023-12-02 12:42:31,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:42:31,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-02 12:42:31,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:42:31,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-02 12:42:31,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2023-12-02 12:42:31,886 INFO L87 Difference]: Start difference. First operand 58677 states and 84971 transitions. Second operand has 23 states, 23 states have (on average 3.739130434782609) internal successors, (86), 23 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:42:34,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:42:34,038 INFO L93 Difference]: Finished difference Result 71809 states and 103692 transitions. [2023-12-02 12:42:34,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-02 12:42:34,039 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.739130434782609) internal successors, (86), 23 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2023-12-02 12:42:34,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:42:34,112 INFO L225 Difference]: With dead ends: 71809 [2023-12-02 12:42:34,112 INFO L226 Difference]: Without dead ends: 71807 [2023-12-02 12:42:34,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=427, Invalid=1295, Unknown=0, NotChecked=0, Total=1722 [2023-12-02 12:42:34,127 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 1355 mSDsluCounter, 4128 mSDsCounter, 0 mSdLazyCounter, 1692 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1355 SdHoareTripleChecker+Valid, 4634 SdHoareTripleChecker+Invalid, 1715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 12:42:34,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1355 Valid, 4634 Invalid, 1715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1692 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 12:42:34,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71807 states. [2023-12-02 12:42:34,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71807 to 61147. [2023-12-02 12:42:34,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61147 states, 61146 states have (on average 1.4468648807771562) internal successors, (88470), 61146 states have internal predecessors, (88470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:42:34,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61147 states to 61147 states and 88470 transitions. [2023-12-02 12:42:34,852 INFO L78 Accepts]: Start accepts. Automaton has 61147 states and 88470 transitions. Word has length 86 [2023-12-02 12:42:34,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:42:34,852 INFO L495 AbstractCegarLoop]: Abstraction has 61147 states and 88470 transitions. [2023-12-02 12:42:34,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.739130434782609) internal successors, (86), 23 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:42:34,852 INFO L276 IsEmpty]: Start isEmpty. Operand 61147 states and 88470 transitions. [2023-12-02 12:42:34,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-02 12:42:34,854 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:42:34,854 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:42:34,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-02 12:42:34,855 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:42:34,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:42:34,855 INFO L85 PathProgramCache]: Analyzing trace with hash 2039593323, now seen corresponding path program 1 times [2023-12-02 12:42:34,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:42:34,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141797480] [2023-12-02 12:42:34,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:42:34,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:42:34,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:42:36,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:42:36,556 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:42:36,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141797480] [2023-12-02 12:42:36,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141797480] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:42:36,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:42:36,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-12-02 12:42:36,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041490906] [2023-12-02 12:42:36,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:42:36,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-02 12:42:36,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:42:36,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-02 12:42:36,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2023-12-02 12:42:36,559 INFO L87 Difference]: Start difference. First operand 61147 states and 88470 transitions. Second operand has 22 states, 22 states have (on average 3.909090909090909) internal successors, (86), 22 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:42:38,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:42:38,148 INFO L93 Difference]: Finished difference Result 83327 states and 120541 transitions. [2023-12-02 12:42:38,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-02 12:42:38,149 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.909090909090909) internal successors, (86), 22 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2023-12-02 12:42:38,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:42:38,226 INFO L225 Difference]: With dead ends: 83327 [2023-12-02 12:42:38,226 INFO L226 Difference]: Without dead ends: 73789 [2023-12-02 12:42:38,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=356, Invalid=1050, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 12:42:38,248 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 1334 mSDsluCounter, 2212 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1334 SdHoareTripleChecker+Valid, 2519 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 12:42:38,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1334 Valid, 2519 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 12:42:38,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73789 states. [2023-12-02 12:42:38,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73789 to 61160. [2023-12-02 12:42:38,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61160 states, 61159 states have (on average 1.4468189473339983) internal successors, (88486), 61159 states have internal predecessors, (88486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:42:39,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61160 states to 61160 states and 88486 transitions. [2023-12-02 12:42:39,157 INFO L78 Accepts]: Start accepts. Automaton has 61160 states and 88486 transitions. Word has length 86 [2023-12-02 12:42:39,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:42:39,158 INFO L495 AbstractCegarLoop]: Abstraction has 61160 states and 88486 transitions. [2023-12-02 12:42:39,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.909090909090909) internal successors, (86), 22 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:42:39,158 INFO L276 IsEmpty]: Start isEmpty. Operand 61160 states and 88486 transitions. [2023-12-02 12:42:39,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-02 12:42:39,160 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:42:39,160 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:42:39,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-02 12:42:39,160 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:42:39,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:42:39,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1367090805, now seen corresponding path program 1 times [2023-12-02 12:42:39,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:42:39,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270880016] [2023-12-02 12:42:39,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:42:39,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:42:39,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:42:40,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:42:40,525 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:42:40,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270880016] [2023-12-02 12:42:40,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270880016] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:42:40,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:42:40,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-12-02 12:42:40,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817423370] [2023-12-02 12:42:40,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:42:40,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-02 12:42:40,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:42:40,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-02 12:42:40,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2023-12-02 12:42:40,527 INFO L87 Difference]: Start difference. First operand 61160 states and 88486 transitions. Second operand has 21 states, 21 states have (on average 4.095238095238095) internal successors, (86), 21 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:42:41,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:42:41,921 INFO L93 Difference]: Finished difference Result 109846 states and 158765 transitions. [2023-12-02 12:42:41,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-02 12:42:41,922 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.095238095238095) internal successors, (86), 21 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2023-12-02 12:42:41,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:42:42,082 INFO L225 Difference]: With dead ends: 109846 [2023-12-02 12:42:42,082 INFO L226 Difference]: Without dead ends: 99988 [2023-12-02 12:42:42,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=273, Invalid=849, Unknown=0, NotChecked=0, Total=1122 [2023-12-02 12:42:42,117 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 1319 mSDsluCounter, 2463 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1319 SdHoareTripleChecker+Valid, 2882 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 12:42:42,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1319 Valid, 2882 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 12:42:42,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99988 states. [2023-12-02 12:42:42,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99988 to 69869. [2023-12-02 12:42:42,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69869 states, 69868 states have (on average 1.4451823438484) internal successors, (100972), 69868 states have internal predecessors, (100972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:42:43,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69869 states to 69869 states and 100972 transitions. [2023-12-02 12:42:43,087 INFO L78 Accepts]: Start accepts. Automaton has 69869 states and 100972 transitions. Word has length 86 [2023-12-02 12:42:43,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:42:43,087 INFO L495 AbstractCegarLoop]: Abstraction has 69869 states and 100972 transitions. [2023-12-02 12:42:43,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.095238095238095) internal successors, (86), 21 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:42:43,087 INFO L276 IsEmpty]: Start isEmpty. Operand 69869 states and 100972 transitions. [2023-12-02 12:42:43,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-02 12:42:43,089 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:42:43,089 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:42:43,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-02 12:42:43,090 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:42:43,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:42:43,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1459597739, now seen corresponding path program 1 times [2023-12-02 12:42:43,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:42:43,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163785872] [2023-12-02 12:42:43,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:42:43,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:42:43,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:42:44,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:42:44,706 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:42:44,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163785872] [2023-12-02 12:42:44,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163785872] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:42:44,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:42:44,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-12-02 12:42:44,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770341327] [2023-12-02 12:42:44,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:42:44,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-02 12:42:44,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:42:44,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-02 12:42:44,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2023-12-02 12:42:44,708 INFO L87 Difference]: Start difference. First operand 69869 states and 100972 transitions. Second operand has 22 states, 22 states have (on average 3.909090909090909) internal successors, (86), 22 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:42:46,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:42:46,723 INFO L93 Difference]: Finished difference Result 112463 states and 162287 transitions. [2023-12-02 12:42:46,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-02 12:42:46,723 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.909090909090909) internal successors, (86), 22 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2023-12-02 12:42:46,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:42:46,848 INFO L225 Difference]: With dead ends: 112463 [2023-12-02 12:42:46,848 INFO L226 Difference]: Without dead ends: 112461 [2023-12-02 12:42:46,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=387, Invalid=1095, Unknown=0, NotChecked=0, Total=1482 [2023-12-02 12:42:46,872 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 1473 mSDsluCounter, 2748 mSDsCounter, 0 mSdLazyCounter, 1434 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 3174 SdHoareTripleChecker+Invalid, 1451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:42:46,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1473 Valid, 3174 Invalid, 1451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1434 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 12:42:46,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112461 states. [2023-12-02 12:42:47,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112461 to 69911. [2023-12-02 12:42:47,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69911 states, 69910 states have (on average 1.4450865398369332) internal successors, (101026), 69910 states have internal predecessors, (101026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:42:48,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69911 states to 69911 states and 101026 transitions. [2023-12-02 12:42:48,013 INFO L78 Accepts]: Start accepts. Automaton has 69911 states and 101026 transitions. Word has length 86 [2023-12-02 12:42:48,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:42:48,013 INFO L495 AbstractCegarLoop]: Abstraction has 69911 states and 101026 transitions. [2023-12-02 12:42:48,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.909090909090909) internal successors, (86), 22 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:42:48,014 INFO L276 IsEmpty]: Start isEmpty. Operand 69911 states and 101026 transitions. [2023-12-02 12:42:48,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-02 12:42:48,015 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:42:48,015 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:42:48,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-02 12:42:48,015 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:42:48,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:42:48,016 INFO L85 PathProgramCache]: Analyzing trace with hash 2047775051, now seen corresponding path program 1 times [2023-12-02 12:42:48,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:42:48,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044948795] [2023-12-02 12:42:48,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:42:48,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:42:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:42:49,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:42:49,313 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:42:49,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044948795] [2023-12-02 12:42:49,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044948795] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:42:49,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:42:49,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-12-02 12:42:49,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737989839] [2023-12-02 12:42:49,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:42:49,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-02 12:42:49,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:42:49,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-02 12:42:49,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2023-12-02 12:42:49,315 INFO L87 Difference]: Start difference. First operand 69911 states and 101026 transitions. Second operand has 22 states, 22 states have (on average 3.909090909090909) internal successors, (86), 22 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:42:50,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:42:50,991 INFO L93 Difference]: Finished difference Result 133286 states and 192718 transitions. [2023-12-02 12:42:50,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-02 12:42:50,991 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.909090909090909) internal successors, (86), 22 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2023-12-02 12:42:50,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:42:51,154 INFO L225 Difference]: With dead ends: 133286 [2023-12-02 12:42:51,154 INFO L226 Difference]: Without dead ends: 114212 [2023-12-02 12:42:51,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=376, Invalid=1106, Unknown=0, NotChecked=0, Total=1482 [2023-12-02 12:42:51,181 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 1528 mSDsluCounter, 1441 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 1734 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 12:42:51,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1528 Valid, 1734 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 12:42:51,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114212 states. [2023-12-02 12:42:52,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114212 to 78203. [2023-12-02 12:42:52,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78203 states, 78202 states have (on average 1.4425334390424798) internal successors, (112809), 78202 states have internal predecessors, (112809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:42:52,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78203 states to 78203 states and 112809 transitions. [2023-12-02 12:42:52,498 INFO L78 Accepts]: Start accepts. Automaton has 78203 states and 112809 transitions. Word has length 86 [2023-12-02 12:42:52,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:42:52,499 INFO L495 AbstractCegarLoop]: Abstraction has 78203 states and 112809 transitions. [2023-12-02 12:42:52,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.909090909090909) internal successors, (86), 22 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:42:52,499 INFO L276 IsEmpty]: Start isEmpty. Operand 78203 states and 112809 transitions. [2023-12-02 12:42:52,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-02 12:42:52,500 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:42:52,500 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:42:52,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-02 12:42:52,500 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:42:52,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:42:52,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1358909077, now seen corresponding path program 1 times [2023-12-02 12:42:52,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:42:52,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710231746] [2023-12-02 12:42:52,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:42:52,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:42:52,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:42:53,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:42:53,902 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:42:53,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710231746] [2023-12-02 12:42:53,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710231746] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:42:53,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:42:53,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-12-02 12:42:53,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026716580] [2023-12-02 12:42:53,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:42:53,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-02 12:42:53,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:42:53,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-02 12:42:53,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2023-12-02 12:42:53,904 INFO L87 Difference]: Start difference. First operand 78203 states and 112809 transitions. Second operand has 21 states, 21 states have (on average 4.095238095238095) internal successors, (86), 21 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:42:55,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:42:55,660 INFO L93 Difference]: Finished difference Result 117652 states and 169232 transitions. [2023-12-02 12:42:55,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-02 12:42:55,661 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.095238095238095) internal successors, (86), 21 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2023-12-02 12:42:55,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:42:55,797 INFO L225 Difference]: With dead ends: 117652 [2023-12-02 12:42:55,797 INFO L226 Difference]: Without dead ends: 112722 [2023-12-02 12:42:55,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=273, Invalid=849, Unknown=0, NotChecked=0, Total=1122 [2023-12-02 12:42:55,824 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 1212 mSDsluCounter, 4027 mSDsCounter, 0 mSdLazyCounter, 1636 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1212 SdHoareTripleChecker+Valid, 4446 SdHoareTripleChecker+Invalid, 1651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:42:55,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1212 Valid, 4446 Invalid, 1651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1636 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 12:42:55,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112722 states. [2023-12-02 12:42:56,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112722 to 78207. [2023-12-02 12:42:56,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78207 states, 78206 states have (on average 1.442536378282996) internal successors, (112815), 78206 states have internal predecessors, (112815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:42:56,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78207 states to 78207 states and 112815 transitions. [2023-12-02 12:42:56,922 INFO L78 Accepts]: Start accepts. Automaton has 78207 states and 112815 transitions. Word has length 86 [2023-12-02 12:42:56,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:42:56,922 INFO L495 AbstractCegarLoop]: Abstraction has 78207 states and 112815 transitions. [2023-12-02 12:42:56,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.095238095238095) internal successors, (86), 21 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:42:56,922 INFO L276 IsEmpty]: Start isEmpty. Operand 78207 states and 112815 transitions. [2023-12-02 12:42:56,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-02 12:42:56,924 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:42:56,924 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:42:56,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-02 12:42:56,924 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:42:56,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:42:56,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1467779467, now seen corresponding path program 1 times [2023-12-02 12:42:56,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:42:56,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454826838] [2023-12-02 12:42:56,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:42:56,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:42:56,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:42:58,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:42:58,384 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:42:58,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454826838] [2023-12-02 12:42:58,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454826838] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:42:58,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:42:58,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-12-02 12:42:58,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047463207] [2023-12-02 12:42:58,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:42:58,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-02 12:42:58,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:42:58,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-02 12:42:58,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2023-12-02 12:42:58,387 INFO L87 Difference]: Start difference. First operand 78207 states and 112815 transitions. Second operand has 21 states, 21 states have (on average 4.095238095238095) internal successors, (86), 21 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:43:00,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:43:00,443 INFO L93 Difference]: Finished difference Result 128315 states and 184891 transitions. [2023-12-02 12:43:00,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-02 12:43:00,444 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.095238095238095) internal successors, (86), 21 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2023-12-02 12:43:00,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:43:00,595 INFO L225 Difference]: With dead ends: 128315 [2023-12-02 12:43:00,595 INFO L226 Difference]: Without dead ends: 128313 [2023-12-02 12:43:00,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=305, Invalid=885, Unknown=0, NotChecked=0, Total=1190 [2023-12-02 12:43:00,621 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 1512 mSDsluCounter, 2565 mSDsCounter, 0 mSdLazyCounter, 1309 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 2987 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:43:00,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 2987 Invalid, 1324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1309 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 12:43:00,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128313 states. [2023-12-02 12:43:01,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128313 to 78227. [2023-12-02 12:43:01,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78227 states, 78226 states have (on average 1.4424743691355815) internal successors, (112839), 78226 states have internal predecessors, (112839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:43:01,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78227 states to 78227 states and 112839 transitions. [2023-12-02 12:43:01,766 INFO L78 Accepts]: Start accepts. Automaton has 78227 states and 112839 transitions. Word has length 86 [2023-12-02 12:43:01,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:43:01,766 INFO L495 AbstractCegarLoop]: Abstraction has 78227 states and 112839 transitions. [2023-12-02 12:43:01,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.095238095238095) internal successors, (86), 21 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:43:01,767 INFO L276 IsEmpty]: Start isEmpty. Operand 78227 states and 112839 transitions. [2023-12-02 12:43:01,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-02 12:43:01,768 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:43:01,768 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:43:01,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-02 12:43:01,768 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:43:01,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:43:01,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1551247659, now seen corresponding path program 1 times [2023-12-02 12:43:01,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:43:01,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880154651] [2023-12-02 12:43:01,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:43:01,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:43:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:43:03,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:43:03,131 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:43:03,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880154651] [2023-12-02 12:43:03,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880154651] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:43:03,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:43:03,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-12-02 12:43:03,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945292323] [2023-12-02 12:43:03,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:43:03,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-02 12:43:03,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:43:03,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-02 12:43:03,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2023-12-02 12:43:03,133 INFO L87 Difference]: Start difference. First operand 78227 states and 112839 transitions. Second operand has 21 states, 21 states have (on average 4.095238095238095) internal successors, (86), 21 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:43:05,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:43:05,996 INFO L93 Difference]: Finished difference Result 115929 states and 167176 transitions. [2023-12-02 12:43:05,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-02 12:43:05,996 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.095238095238095) internal successors, (86), 21 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2023-12-02 12:43:05,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:43:06,136 INFO L225 Difference]: With dead ends: 115929 [2023-12-02 12:43:06,136 INFO L226 Difference]: Without dead ends: 115927 [2023-12-02 12:43:06,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=371, Invalid=1035, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 12:43:06,162 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 1381 mSDsluCounter, 3968 mSDsCounter, 0 mSdLazyCounter, 1788 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1381 SdHoareTripleChecker+Valid, 4417 SdHoareTripleChecker+Invalid, 1803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-02 12:43:06,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1381 Valid, 4417 Invalid, 1803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1788 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-02 12:43:06,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115927 states. [2023-12-02 12:43:07,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115927 to 78242. [2023-12-02 12:43:07,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78242 states, 78241 states have (on average 1.4424662261474164) internal successors, (112860), 78241 states have internal predecessors, (112860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:43:07,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78242 states to 78242 states and 112860 transitions. [2023-12-02 12:43:07,344 INFO L78 Accepts]: Start accepts. Automaton has 78242 states and 112860 transitions. Word has length 86 [2023-12-02 12:43:07,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:43:07,345 INFO L495 AbstractCegarLoop]: Abstraction has 78242 states and 112860 transitions. [2023-12-02 12:43:07,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.095238095238095) internal successors, (86), 21 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:43:07,345 INFO L276 IsEmpty]: Start isEmpty. Operand 78242 states and 112860 transitions. [2023-12-02 12:43:07,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-02 12:43:07,347 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:43:07,347 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:43:07,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-02 12:43:07,347 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:43:07,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:43:07,348 INFO L85 PathProgramCache]: Analyzing trace with hash -2013847253, now seen corresponding path program 1 times [2023-12-02 12:43:07,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:43:07,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398098771] [2023-12-02 12:43:07,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:43:07,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:43:07,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:43:08,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:43:08,938 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:43:08,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398098771] [2023-12-02 12:43:08,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398098771] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:43:08,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:43:08,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-12-02 12:43:08,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993402368] [2023-12-02 12:43:08,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:43:08,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-02 12:43:08,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:43:08,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-02 12:43:08,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2023-12-02 12:43:08,941 INFO L87 Difference]: Start difference. First operand 78242 states and 112860 transitions. Second operand has 22 states, 22 states have (on average 3.909090909090909) internal successors, (86), 22 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:43:11,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:43:11,143 INFO L93 Difference]: Finished difference Result 147884 states and 213797 transitions. [2023-12-02 12:43:11,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-02 12:43:11,144 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.909090909090909) internal successors, (86), 22 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2023-12-02 12:43:11,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:43:11,280 INFO L225 Difference]: With dead ends: 147884 [2023-12-02 12:43:11,280 INFO L226 Difference]: Without dead ends: 128810 [2023-12-02 12:43:11,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=376, Invalid=1106, Unknown=0, NotChecked=0, Total=1482 [2023-12-02 12:43:11,296 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 1449 mSDsluCounter, 2492 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1449 SdHoareTripleChecker+Valid, 2785 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 12:43:11,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1449 Valid, 2785 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 12:43:11,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128810 states. [2023-12-02 12:43:12,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128810 to 78249. [2023-12-02 12:43:12,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78249 states, 78248 states have (on average 1.4407908189346692) internal successors, (112739), 78248 states have internal predecessors, (112739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:43:12,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78249 states to 78249 states and 112739 transitions. [2023-12-02 12:43:12,394 INFO L78 Accepts]: Start accepts. Automaton has 78249 states and 112739 transitions. Word has length 86 [2023-12-02 12:43:12,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:43:12,394 INFO L495 AbstractCegarLoop]: Abstraction has 78249 states and 112739 transitions. [2023-12-02 12:43:12,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.909090909090909) internal successors, (86), 22 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:43:12,395 INFO L276 IsEmpty]: Start isEmpty. Operand 78249 states and 112739 transitions. [2023-12-02 12:43:12,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-02 12:43:12,396 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:43:12,396 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:43:12,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-02 12:43:12,397 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:43:12,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:43:12,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1125564085, now seen corresponding path program 1 times [2023-12-02 12:43:12,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:43:12,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498123244] [2023-12-02 12:43:12,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:43:12,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:43:12,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:43:13,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:43:13,595 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:43:13,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498123244] [2023-12-02 12:43:13,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498123244] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:43:13,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:43:13,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-12-02 12:43:13,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047110585] [2023-12-02 12:43:13,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:43:13,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-02 12:43:13,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:43:13,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-02 12:43:13,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2023-12-02 12:43:13,597 INFO L87 Difference]: Start difference. First operand 78249 states and 112739 transitions. Second operand has 21 states, 21 states have (on average 4.095238095238095) internal successors, (86), 21 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:43:15,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:43:15,452 INFO L93 Difference]: Finished difference Result 124323 states and 178685 transitions. [2023-12-02 12:43:15,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-02 12:43:15,453 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.095238095238095) internal successors, (86), 21 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2023-12-02 12:43:15,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:43:15,639 INFO L225 Difference]: With dead ends: 124323 [2023-12-02 12:43:15,639 INFO L226 Difference]: Without dead ends: 119393 [2023-12-02 12:43:15,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=273, Invalid=849, Unknown=0, NotChecked=0, Total=1122 [2023-12-02 12:43:15,678 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 1156 mSDsluCounter, 3516 mSDsCounter, 0 mSdLazyCounter, 1311 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1156 SdHoareTripleChecker+Valid, 3935 SdHoareTripleChecker+Invalid, 1328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:43:15,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1156 Valid, 3935 Invalid, 1328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1311 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 12:43:15,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119393 states. [2023-12-02 12:43:16,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119393 to 78249. [2023-12-02 12:43:16,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78249 states, 78248 states have (on average 1.4407908189346692) internal successors, (112739), 78248 states have internal predecessors, (112739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:43:16,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78249 states to 78249 states and 112739 transitions. [2023-12-02 12:43:16,950 INFO L78 Accepts]: Start accepts. Automaton has 78249 states and 112739 transitions. Word has length 86 [2023-12-02 12:43:16,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:43:16,951 INFO L495 AbstractCegarLoop]: Abstraction has 78249 states and 112739 transitions. [2023-12-02 12:43:16,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.095238095238095) internal successors, (86), 21 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:43:16,951 INFO L276 IsEmpty]: Start isEmpty. Operand 78249 states and 112739 transitions. [2023-12-02 12:43:16,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-02 12:43:16,952 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:43:16,952 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:43:16,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-02 12:43:16,953 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:43:16,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:43:16,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1701124459, now seen corresponding path program 1 times [2023-12-02 12:43:16,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:43:16,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781556387] [2023-12-02 12:43:16,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:43:16,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:43:16,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:43:18,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:43:18,378 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:43:18,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781556387] [2023-12-02 12:43:18,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781556387] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:43:18,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:43:18,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-12-02 12:43:18,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66142716] [2023-12-02 12:43:18,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:43:18,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-02 12:43:18,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:43:18,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-02 12:43:18,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2023-12-02 12:43:18,379 INFO L87 Difference]: Start difference. First operand 78249 states and 112739 transitions. Second operand has 22 states, 22 states have (on average 3.909090909090909) internal successors, (86), 22 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:43:21,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:43:21,083 INFO L93 Difference]: Finished difference Result 134026 states and 193114 transitions. [2023-12-02 12:43:21,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-02 12:43:21,084 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.909090909090909) internal successors, (86), 22 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2023-12-02 12:43:21,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:43:21,233 INFO L225 Difference]: With dead ends: 134026 [2023-12-02 12:43:21,233 INFO L226 Difference]: Without dead ends: 134024 [2023-12-02 12:43:21,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=410, Invalid=1150, Unknown=0, NotChecked=0, Total=1560 [2023-12-02 12:43:21,263 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 1770 mSDsluCounter, 3800 mSDsCounter, 0 mSdLazyCounter, 1417 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1770 SdHoareTripleChecker+Valid, 4264 SdHoareTripleChecker+Invalid, 1439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 12:43:21,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1770 Valid, 4264 Invalid, 1439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1417 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 12:43:21,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134024 states. [2023-12-02 12:43:22,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134024 to 81993. [2023-12-02 12:43:22,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81993 states, 81992 states have (on average 1.4416650404917553) internal successors, (118205), 81992 states have internal predecessors, (118205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:43:22,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81993 states to 81993 states and 118205 transitions. [2023-12-02 12:43:22,553 INFO L78 Accepts]: Start accepts. Automaton has 81993 states and 118205 transitions. Word has length 86 [2023-12-02 12:43:22,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:43:22,554 INFO L495 AbstractCegarLoop]: Abstraction has 81993 states and 118205 transitions. [2023-12-02 12:43:22,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.909090909090909) internal successors, (86), 22 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:43:22,554 INFO L276 IsEmpty]: Start isEmpty. Operand 81993 states and 118205 transitions. [2023-12-02 12:43:22,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-02 12:43:22,555 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:43:22,556 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:43:22,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-02 12:43:22,556 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:43:22,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:43:22,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1784592651, now seen corresponding path program 1 times [2023-12-02 12:43:22,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:43:22,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559916850] [2023-12-02 12:43:22,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:43:22,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:43:22,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:43:23,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:43:23,836 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:43:23,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559916850] [2023-12-02 12:43:23,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559916850] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:43:23,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:43:23,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-12-02 12:43:23,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443499442] [2023-12-02 12:43:23,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:43:23,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-02 12:43:23,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:43:23,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-02 12:43:23,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2023-12-02 12:43:23,838 INFO L87 Difference]: Start difference. First operand 81993 states and 118205 transitions. Second operand has 21 states, 21 states have (on average 4.095238095238095) internal successors, (86), 21 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:43:25,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:43:25,710 INFO L93 Difference]: Finished difference Result 164926 states and 237611 transitions. [2023-12-02 12:43:25,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-02 12:43:25,711 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.095238095238095) internal successors, (86), 21 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2023-12-02 12:43:25,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:43:25,882 INFO L225 Difference]: With dead ends: 164926 [2023-12-02 12:43:25,882 INFO L226 Difference]: Without dead ends: 164924 [2023-12-02 12:43:25,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=300, Invalid=890, Unknown=0, NotChecked=0, Total=1190 [2023-12-02 12:43:25,896 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 1296 mSDsluCounter, 3700 mSDsCounter, 0 mSdLazyCounter, 1251 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1296 SdHoareTripleChecker+Valid, 4132 SdHoareTripleChecker+Invalid, 1263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 12:43:25,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1296 Valid, 4132 Invalid, 1263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1251 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 12:43:25,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164924 states. [2023-12-02 12:43:26,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164924 to 82008. [2023-12-02 12:43:26,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82008 states, 82007 states have (on average 1.4416574194885803) internal successors, (118226), 82007 states have internal predecessors, (118226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:43:27,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82008 states to 82008 states and 118226 transitions. [2023-12-02 12:43:27,097 INFO L78 Accepts]: Start accepts. Automaton has 82008 states and 118226 transitions. Word has length 86 [2023-12-02 12:43:27,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:43:27,097 INFO L495 AbstractCegarLoop]: Abstraction has 82008 states and 118226 transitions. [2023-12-02 12:43:27,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.095238095238095) internal successors, (86), 21 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:43:27,097 INFO L276 IsEmpty]: Start isEmpty. Operand 82008 states and 118226 transitions. [2023-12-02 12:43:27,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-02 12:43:27,099 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:43:27,099 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:43:27,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-02 12:43:27,099 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:43:27,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:43:27,100 INFO L85 PathProgramCache]: Analyzing trace with hash 166725867, now seen corresponding path program 1 times [2023-12-02 12:43:27,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:43:27,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690330605] [2023-12-02 12:43:27,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:43:27,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:43:27,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:43:28,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:43:28,455 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:43:28,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690330605] [2023-12-02 12:43:28,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690330605] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:43:28,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:43:28,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-12-02 12:43:28,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889887690] [2023-12-02 12:43:28,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:43:28,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-02 12:43:28,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:43:28,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-02 12:43:28,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2023-12-02 12:43:28,457 INFO L87 Difference]: Start difference. First operand 82008 states and 118226 transitions. Second operand has 21 states, 21 states have (on average 4.095238095238095) internal successors, (86), 21 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:43:30,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:43:30,751 INFO L93 Difference]: Finished difference Result 127317 states and 183434 transitions. [2023-12-02 12:43:30,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-02 12:43:30,752 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.095238095238095) internal successors, (86), 21 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2023-12-02 12:43:30,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:43:30,924 INFO L225 Difference]: With dead ends: 127317 [2023-12-02 12:43:30,924 INFO L226 Difference]: Without dead ends: 127315 [2023-12-02 12:43:30,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=358, Invalid=974, Unknown=0, NotChecked=0, Total=1332 [2023-12-02 12:43:30,957 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 1567 mSDsluCounter, 2332 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1567 SdHoareTripleChecker+Valid, 2784 SdHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:43:30,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1567 Valid, 2784 Invalid, 1154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 12:43:31,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127315 states. [2023-12-02 12:43:31,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127315 to 82020. [2023-12-02 12:43:31,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82020 states, 82019 states have (on average 1.4416659554493472) internal successors, (118244), 82019 states have internal predecessors, (118244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:43:32,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82020 states to 82020 states and 118244 transitions. [2023-12-02 12:43:32,295 INFO L78 Accepts]: Start accepts. Automaton has 82020 states and 118244 transitions. Word has length 86 [2023-12-02 12:43:32,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:43:32,296 INFO L495 AbstractCegarLoop]: Abstraction has 82020 states and 118244 transitions. [2023-12-02 12:43:32,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.095238095238095) internal successors, (86), 21 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:43:32,296 INFO L276 IsEmpty]: Start isEmpty. Operand 82020 states and 118244 transitions. [2023-12-02 12:43:32,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-02 12:43:32,298 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:43:32,298 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:43:32,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-02 12:43:32,298 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:43:32,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:43:32,298 INFO L85 PathProgramCache]: Analyzing trace with hash 316911870, now seen corresponding path program 1 times [2023-12-02 12:43:32,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:43:32,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547557120] [2023-12-02 12:43:32,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:43:32,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:43:32,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:43:32,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:43:32,347 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:43:32,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547557120] [2023-12-02 12:43:32,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547557120] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:43:32,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:43:32,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 12:43:32,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529948834] [2023-12-02 12:43:32,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:43:32,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:43:32,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:43:32,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:43:32,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:43:32,349 INFO L87 Difference]: Start difference. First operand 82020 states and 118244 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:43:32,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:43:32,754 INFO L93 Difference]: Finished difference Result 159646 states and 230591 transitions. [2023-12-02 12:43:32,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:43:32,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2023-12-02 12:43:32,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:43:32,846 INFO L225 Difference]: With dead ends: 159646 [2023-12-02 12:43:32,846 INFO L226 Difference]: Without dead ends: 80622 [2023-12-02 12:43:32,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:43:32,885 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 169 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:43:32,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 454 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 12:43:32,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80622 states. [2023-12-02 12:43:33,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80622 to 80007. [2023-12-02 12:43:33,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80007 states, 80006 states have (on average 1.440154488413369) internal successors, (115221), 80006 states have internal predecessors, (115221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:43:34,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80007 states to 80007 states and 115221 transitions. [2023-12-02 12:43:34,036 INFO L78 Accepts]: Start accepts. Automaton has 80007 states and 115221 transitions. Word has length 87 [2023-12-02 12:43:34,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:43:34,036 INFO L495 AbstractCegarLoop]: Abstraction has 80007 states and 115221 transitions. [2023-12-02 12:43:34,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:43:34,037 INFO L276 IsEmpty]: Start isEmpty. Operand 80007 states and 115221 transitions. [2023-12-02 12:43:34,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-02 12:43:34,038 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:43:34,038 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:43:34,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-02 12:43:34,039 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:43:34,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:43:34,039 INFO L85 PathProgramCache]: Analyzing trace with hash -762023976, now seen corresponding path program 1 times [2023-12-02 12:43:34,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:43:34,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261942391] [2023-12-02 12:43:34,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:43:34,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:43:34,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:43:34,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:43:34,100 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:43:34,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261942391] [2023-12-02 12:43:34,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261942391] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:43:34,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:43:34,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 12:43:34,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201808920] [2023-12-02 12:43:34,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:43:34,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:43:34,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:43:34,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:43:34,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:43:34,103 INFO L87 Difference]: Start difference. First operand 80007 states and 115221 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:43:34,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:43:34,593 INFO L93 Difference]: Finished difference Result 143070 states and 206325 transitions. [2023-12-02 12:43:34,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:43:34,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2023-12-02 12:43:34,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:43:34,684 INFO L225 Difference]: With dead ends: 143070 [2023-12-02 12:43:34,684 INFO L226 Difference]: Without dead ends: 77993 [2023-12-02 12:43:34,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:43:34,723 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 170 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:43:34,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 452 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 12:43:34,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77993 states. [2023-12-02 12:43:35,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77993 to 77990. [2023-12-02 12:43:35,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77990 states, 77989 states have (on average 1.4385490261447127) internal successors, (112191), 77989 states have internal predecessors, (112191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:43:35,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77990 states to 77990 states and 112191 transitions. [2023-12-02 12:43:35,750 INFO L78 Accepts]: Start accepts. Automaton has 77990 states and 112191 transitions. Word has length 87 [2023-12-02 12:43:35,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:43:35,750 INFO L495 AbstractCegarLoop]: Abstraction has 77990 states and 112191 transitions. [2023-12-02 12:43:35,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:43:35,750 INFO L276 IsEmpty]: Start isEmpty. Operand 77990 states and 112191 transitions. [2023-12-02 12:43:35,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-02 12:43:35,752 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:43:35,752 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:43:35,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-02 12:43:35,752 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:43:35,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:43:35,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1541360885, now seen corresponding path program 1 times [2023-12-02 12:43:35,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:43:35,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975244371] [2023-12-02 12:43:35,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:43:35,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:43:35,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:43:35,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:43:35,797 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:43:35,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975244371] [2023-12-02 12:43:35,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975244371] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:43:35,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:43:35,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 12:43:35,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35821905] [2023-12-02 12:43:35,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:43:35,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:43:35,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:43:35,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:43:35,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:43:35,798 INFO L87 Difference]: Start difference. First operand 77990 states and 112191 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:43:36,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:43:36,498 INFO L93 Difference]: Finished difference Result 141631 states and 204266 transitions. [2023-12-02 12:43:36,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:43:36,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2023-12-02 12:43:36,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:43:36,595 INFO L225 Difference]: With dead ends: 141631 [2023-12-02 12:43:36,595 INFO L226 Difference]: Without dead ends: 75931 [2023-12-02 12:43:36,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:43:36,635 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 169 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 12:43:36,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 444 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 12:43:36,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75931 states. [2023-12-02 12:43:37,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75931 to 75928. [2023-12-02 12:43:37,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75928 states, 75927 states have (on average 1.4370513782975753) internal successors, (109111), 75927 states have internal predecessors, (109111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:43:37,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75928 states to 75928 states and 109111 transitions. [2023-12-02 12:43:37,647 INFO L78 Accepts]: Start accepts. Automaton has 75928 states and 109111 transitions. Word has length 87 [2023-12-02 12:43:37,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:43:37,648 INFO L495 AbstractCegarLoop]: Abstraction has 75928 states and 109111 transitions. [2023-12-02 12:43:37,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:43:37,648 INFO L276 IsEmpty]: Start isEmpty. Operand 75928 states and 109111 transitions. [2023-12-02 12:43:37,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 12:43:37,649 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:43:37,649 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:43:37,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-02 12:43:37,650 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:43:37,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:43:37,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1674283881, now seen corresponding path program 1 times [2023-12-02 12:43:37,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:43:37,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589659741] [2023-12-02 12:43:37,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:43:37,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:43:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:43:41,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:43:41,474 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:43:41,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589659741] [2023-12-02 12:43:41,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589659741] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:43:41,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:43:41,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2023-12-02 12:43:41,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329991504] [2023-12-02 12:43:41,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:43:41,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-02 12:43:41,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:43:41,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-02 12:43:41,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=811, Unknown=0, NotChecked=0, Total=930 [2023-12-02 12:43:41,476 INFO L87 Difference]: Start difference. First operand 75928 states and 109111 transitions. Second operand has 31 states, 31 states have (on average 2.838709677419355) internal successors, (88), 30 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:43:49,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:43:49,661 INFO L93 Difference]: Finished difference Result 122595 states and 175601 transitions. [2023-12-02 12:43:49,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-02 12:43:49,661 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.838709677419355) internal successors, (88), 30 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2023-12-02 12:43:49,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:43:49,806 INFO L225 Difference]: With dead ends: 122595 [2023-12-02 12:43:49,806 INFO L226 Difference]: Without dead ends: 122593 [2023-12-02 12:43:49,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 555 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=621, Invalid=2459, Unknown=0, NotChecked=0, Total=3080 [2023-12-02 12:43:49,833 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 1824 mSDsluCounter, 10078 mSDsCounter, 0 mSdLazyCounter, 5557 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1824 SdHoareTripleChecker+Valid, 10739 SdHoareTripleChecker+Invalid, 5569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 5557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-12-02 12:43:49,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1824 Valid, 10739 Invalid, 5569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 5557 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-12-02 12:43:49,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122593 states. [2023-12-02 12:43:50,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122593 to 75940. [2023-12-02 12:43:50,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75940 states, 75939 states have (on average 1.4370086516809544) internal successors, (109125), 75939 states have internal predecessors, (109125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:43:50,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75940 states to 75940 states and 109125 transitions. [2023-12-02 12:43:50,945 INFO L78 Accepts]: Start accepts. Automaton has 75940 states and 109125 transitions. Word has length 88 [2023-12-02 12:43:50,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:43:50,946 INFO L495 AbstractCegarLoop]: Abstraction has 75940 states and 109125 transitions. [2023-12-02 12:43:50,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.838709677419355) internal successors, (88), 30 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:43:50,946 INFO L276 IsEmpty]: Start isEmpty. Operand 75940 states and 109125 transitions. [2023-12-02 12:43:50,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 12:43:50,947 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:43:50,947 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:43:50,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-02 12:43:50,948 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:43:50,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:43:50,948 INFO L85 PathProgramCache]: Analyzing trace with hash -437867465, now seen corresponding path program 1 times [2023-12-02 12:43:50,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:43:50,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713879020] [2023-12-02 12:43:50,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:43:50,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:43:50,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:43:54,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:43:54,507 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:43:54,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713879020] [2023-12-02 12:43:54,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713879020] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:43:54,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:43:54,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2023-12-02 12:43:54,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464100033] [2023-12-02 12:43:54,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:43:54,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-02 12:43:54,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:43:54,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-02 12:43:54,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=708, Unknown=0, NotChecked=0, Total=812 [2023-12-02 12:43:54,509 INFO L87 Difference]: Start difference. First operand 75940 states and 109125 transitions. Second operand has 29 states, 29 states have (on average 3.0344827586206895) internal successors, (88), 28 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:43:59,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:43:59,662 INFO L93 Difference]: Finished difference Result 88354 states and 126906 transitions. [2023-12-02 12:43:59,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-02 12:43:59,663 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.0344827586206895) internal successors, (88), 28 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2023-12-02 12:43:59,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:43:59,753 INFO L225 Difference]: With dead ends: 88354 [2023-12-02 12:43:59,753 INFO L226 Difference]: Without dead ends: 83680 [2023-12-02 12:43:59,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=681, Invalid=2399, Unknown=0, NotChecked=0, Total=3080 [2023-12-02 12:43:59,773 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 1858 mSDsluCounter, 4305 mSDsCounter, 0 mSdLazyCounter, 2083 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1858 SdHoareTripleChecker+Valid, 4715 SdHoareTripleChecker+Invalid, 2092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-02 12:43:59,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1858 Valid, 4715 Invalid, 2092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 2083 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-02 12:43:59,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83680 states. [2023-12-02 12:44:00,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83680 to 75946. [2023-12-02 12:44:00,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75946 states, 75945 states have (on average 1.4369872934360393) internal successors, (109132), 75945 states have internal predecessors, (109132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:44:00,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75946 states to 75946 states and 109132 transitions. [2023-12-02 12:44:00,763 INFO L78 Accepts]: Start accepts. Automaton has 75946 states and 109132 transitions. Word has length 88 [2023-12-02 12:44:00,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:44:00,764 INFO L495 AbstractCegarLoop]: Abstraction has 75946 states and 109132 transitions. [2023-12-02 12:44:00,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.0344827586206895) internal successors, (88), 28 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:44:00,764 INFO L276 IsEmpty]: Start isEmpty. Operand 75946 states and 109132 transitions. [2023-12-02 12:44:00,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 12:44:00,765 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:44:00,765 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:44:00,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-02 12:44:00,765 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:44:00,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:44:00,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1906146217, now seen corresponding path program 1 times [2023-12-02 12:44:00,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:44:00,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665794409] [2023-12-02 12:44:00,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:44:00,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:44:00,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:44:02,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:44:02,955 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:44:02,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665794409] [2023-12-02 12:44:02,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665794409] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:44:02,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:44:02,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2023-12-02 12:44:02,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716259754] [2023-12-02 12:44:02,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:44:02,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-02 12:44:02,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:44:02,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-02 12:44:02,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=636, Unknown=0, NotChecked=0, Total=756 [2023-12-02 12:44:02,957 INFO L87 Difference]: Start difference. First operand 75946 states and 109132 transitions. Second operand has 28 states, 28 states have (on average 3.142857142857143) internal successors, (88), 27 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:44:05,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:44:05,907 INFO L93 Difference]: Finished difference Result 83745 states and 120196 transitions. [2023-12-02 12:44:05,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-02 12:44:05,908 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.142857142857143) internal successors, (88), 27 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2023-12-02 12:44:05,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:44:06,005 INFO L225 Difference]: With dead ends: 83745 [2023-12-02 12:44:06,005 INFO L226 Difference]: Without dead ends: 83743 [2023-12-02 12:44:06,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=511, Invalid=1939, Unknown=0, NotChecked=0, Total=2450 [2023-12-02 12:44:06,025 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 1636 mSDsluCounter, 1898 mSDsCounter, 0 mSdLazyCounter, 2472 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1636 SdHoareTripleChecker+Valid, 2163 SdHoareTripleChecker+Invalid, 2481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-02 12:44:06,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1636 Valid, 2163 Invalid, 2481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 2472 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-02 12:44:06,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83743 states. [2023-12-02 12:44:06,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83743 to 75952. [2023-12-02 12:44:06,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75952 states, 75951 states have (on average 1.4369659385656541) internal successors, (109139), 75951 states have internal predecessors, (109139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:44:06,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75952 states to 75952 states and 109139 transitions. [2023-12-02 12:44:06,872 INFO L78 Accepts]: Start accepts. Automaton has 75952 states and 109139 transitions. Word has length 88 [2023-12-02 12:44:06,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:44:06,873 INFO L495 AbstractCegarLoop]: Abstraction has 75952 states and 109139 transitions. [2023-12-02 12:44:06,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.142857142857143) internal successors, (88), 27 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:44:06,873 INFO L276 IsEmpty]: Start isEmpty. Operand 75952 states and 109139 transitions. [2023-12-02 12:44:06,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 12:44:06,874 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:44:06,874 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:44:06,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-02 12:44:06,875 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:44:06,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:44:06,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1330453623, now seen corresponding path program 1 times [2023-12-02 12:44:06,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:44:06,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417761276] [2023-12-02 12:44:06,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:44:06,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:44:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:44:09,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:44:09,442 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:44:09,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417761276] [2023-12-02 12:44:09,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417761276] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:44:09,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:44:09,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2023-12-02 12:44:09,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766568768] [2023-12-02 12:44:09,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:44:09,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-02 12:44:09,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:44:09,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-02 12:44:09,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=751, Unknown=0, NotChecked=0, Total=870 [2023-12-02 12:44:09,444 INFO L87 Difference]: Start difference. First operand 75952 states and 109139 transitions. Second operand has 30 states, 30 states have (on average 2.933333333333333) internal successors, (88), 29 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:44:13,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:44:13,625 INFO L93 Difference]: Finished difference Result 83714 states and 120159 transitions. [2023-12-02 12:44:13,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-02 12:44:13,626 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.933333333333333) internal successors, (88), 29 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2023-12-02 12:44:13,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:44:13,717 INFO L225 Difference]: With dead ends: 83714 [2023-12-02 12:44:13,717 INFO L226 Difference]: Without dead ends: 83712 [2023-12-02 12:44:13,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=574, Invalid=2182, Unknown=0, NotChecked=0, Total=2756 [2023-12-02 12:44:13,736 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 1435 mSDsluCounter, 2092 mSDsCounter, 0 mSdLazyCounter, 3395 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1435 SdHoareTripleChecker+Valid, 2344 SdHoareTripleChecker+Invalid, 3404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 3395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-02 12:44:13,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1435 Valid, 2344 Invalid, 3404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 3395 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-02 12:44:13,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83712 states. [2023-12-02 12:44:14,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83712 to 75952. [2023-12-02 12:44:14,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75952 states, 75951 states have (on average 1.4369659385656541) internal successors, (109139), 75951 states have internal predecessors, (109139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:44:14,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75952 states to 75952 states and 109139 transitions. [2023-12-02 12:44:14,537 INFO L78 Accepts]: Start accepts. Automaton has 75952 states and 109139 transitions. Word has length 88 [2023-12-02 12:44:14,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:44:14,537 INFO L495 AbstractCegarLoop]: Abstraction has 75952 states and 109139 transitions. [2023-12-02 12:44:14,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.933333333333333) internal successors, (88), 29 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:44:14,537 INFO L276 IsEmpty]: Start isEmpty. Operand 75952 states and 109139 transitions. [2023-12-02 12:44:14,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 12:44:14,539 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:44:14,539 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:44:14,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-02 12:44:14,539 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:44:14,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:44:14,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1165161449, now seen corresponding path program 1 times [2023-12-02 12:44:14,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:44:14,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863618121] [2023-12-02 12:44:14,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:44:14,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:44:14,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:44:15,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:44:15,931 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:44:15,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863618121] [2023-12-02 12:44:15,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863618121] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:44:15,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:44:15,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-12-02 12:44:15,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726488911] [2023-12-02 12:44:15,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:44:15,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-02 12:44:15,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:44:15,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-02 12:44:15,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2023-12-02 12:44:15,933 INFO L87 Difference]: Start difference. First operand 75952 states and 109139 transitions. Second operand has 22 states, 22 states have (on average 4.0) internal successors, (88), 22 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:44:17,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:44:17,277 INFO L93 Difference]: Finished difference Result 92613 states and 132979 transitions. [2023-12-02 12:44:17,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-02 12:44:17,278 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.0) internal successors, (88), 22 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2023-12-02 12:44:17,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:44:17,373 INFO L225 Difference]: With dead ends: 92613 [2023-12-02 12:44:17,373 INFO L226 Difference]: Without dead ends: 87939 [2023-12-02 12:44:17,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=332, Invalid=1000, Unknown=0, NotChecked=0, Total=1332 [2023-12-02 12:44:17,393 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 1245 mSDsluCounter, 3055 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1245 SdHoareTripleChecker+Valid, 3464 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 12:44:17,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1245 Valid, 3464 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 12:44:17,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87939 states. [2023-12-02 12:44:18,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87939 to 75958. [2023-12-02 12:44:18,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75958 states, 75957 states have (on average 1.4369445870689996) internal successors, (109146), 75957 states have internal predecessors, (109146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:44:18,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75958 states to 75958 states and 109146 transitions. [2023-12-02 12:44:18,320 INFO L78 Accepts]: Start accepts. Automaton has 75958 states and 109146 transitions. Word has length 88 [2023-12-02 12:44:18,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:44:18,320 INFO L495 AbstractCegarLoop]: Abstraction has 75958 states and 109146 transitions. [2023-12-02 12:44:18,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.0) internal successors, (88), 22 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:44:18,320 INFO L276 IsEmpty]: Start isEmpty. Operand 75958 states and 109146 transitions. [2023-12-02 12:44:18,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 12:44:18,321 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:44:18,322 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:44:18,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-12-02 12:44:18,322 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:44:18,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:44:18,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1661527095, now seen corresponding path program 1 times [2023-12-02 12:44:18,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:44:18,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294237752] [2023-12-02 12:44:18,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:44:18,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:44:18,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:44:19,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:44:19,962 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:44:19,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294237752] [2023-12-02 12:44:19,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294237752] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:44:19,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:44:19,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2023-12-02 12:44:19,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350681202] [2023-12-02 12:44:19,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:44:19,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-02 12:44:19,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:44:19,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-02 12:44:19,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2023-12-02 12:44:19,965 INFO L87 Difference]: Start difference. First operand 75958 states and 109146 transitions. Second operand has 25 states, 25 states have (on average 3.52) internal successors, (88), 24 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:44:22,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:44:22,408 INFO L93 Difference]: Finished difference Result 90591 states and 129945 transitions. [2023-12-02 12:44:22,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-02 12:44:22,409 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.52) internal successors, (88), 24 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2023-12-02 12:44:22,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:44:22,506 INFO L225 Difference]: With dead ends: 90591 [2023-12-02 12:44:22,506 INFO L226 Difference]: Without dead ends: 90589 [2023-12-02 12:44:22,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=366, Invalid=1356, Unknown=0, NotChecked=0, Total=1722 [2023-12-02 12:44:22,526 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 1505 mSDsluCounter, 2055 mSDsCounter, 0 mSdLazyCounter, 2569 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 2294 SdHoareTripleChecker+Invalid, 2577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 2569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-02 12:44:22,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1505 Valid, 2294 Invalid, 2577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 2569 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-02 12:44:22,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90589 states. [2023-12-02 12:44:23,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90589 to 75952. [2023-12-02 12:44:23,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75952 states, 75951 states have (on average 1.4369659385656541) internal successors, (109139), 75951 states have internal predecessors, (109139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:44:23,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75952 states to 75952 states and 109139 transitions. [2023-12-02 12:44:23,380 INFO L78 Accepts]: Start accepts. Automaton has 75952 states and 109139 transitions. Word has length 88 [2023-12-02 12:44:23,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:44:23,380 INFO L495 AbstractCegarLoop]: Abstraction has 75952 states and 109139 transitions. [2023-12-02 12:44:23,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.52) internal successors, (88), 24 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:44:23,380 INFO L276 IsEmpty]: Start isEmpty. Operand 75952 states and 109139 transitions. [2023-12-02 12:44:23,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 12:44:23,382 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:44:23,382 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:44:23,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-02 12:44:23,382 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:44:23,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:44:23,382 INFO L85 PathProgramCache]: Analyzing trace with hash 603159639, now seen corresponding path program 1 times [2023-12-02 12:44:23,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:44:23,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428553696] [2023-12-02 12:44:23,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:44:23,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:44:23,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:44:24,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:44:24,739 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:44:24,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428553696] [2023-12-02 12:44:24,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428553696] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:44:24,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:44:24,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-12-02 12:44:24,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118942960] [2023-12-02 12:44:24,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:44:24,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-02 12:44:24,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:44:24,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-02 12:44:24,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2023-12-02 12:44:24,741 INFO L87 Difference]: Start difference. First operand 75952 states and 109139 transitions. Second operand has 22 states, 22 states have (on average 4.0) internal successors, (88), 22 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:44:26,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:44:26,529 INFO L93 Difference]: Finished difference Result 90540 states and 129891 transitions. [2023-12-02 12:44:26,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-02 12:44:26,529 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.0) internal successors, (88), 22 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2023-12-02 12:44:26,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:44:26,635 INFO L225 Difference]: With dead ends: 90540 [2023-12-02 12:44:26,635 INFO L226 Difference]: Without dead ends: 90538 [2023-12-02 12:44:26,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=317, Invalid=1015, Unknown=0, NotChecked=0, Total=1332 [2023-12-02 12:44:26,655 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 1027 mSDsluCounter, 4446 mSDsCounter, 0 mSdLazyCounter, 1420 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1027 SdHoareTripleChecker+Valid, 4942 SdHoareTripleChecker+Invalid, 1432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:44:26,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1027 Valid, 4942 Invalid, 1432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1420 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 12:44:26,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90538 states. [2023-12-02 12:44:27,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90538 to 75949. [2023-12-02 12:44:27,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75949 states, 75948 states have (on average 1.436970032127245) internal successors, (109135), 75948 states have internal predecessors, (109135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:44:27,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75949 states to 75949 states and 109135 transitions. [2023-12-02 12:44:27,612 INFO L78 Accepts]: Start accepts. Automaton has 75949 states and 109135 transitions. Word has length 88 [2023-12-02 12:44:27,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:44:27,613 INFO L495 AbstractCegarLoop]: Abstraction has 75949 states and 109135 transitions. [2023-12-02 12:44:27,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.0) internal successors, (88), 22 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:44:27,613 INFO L276 IsEmpty]: Start isEmpty. Operand 75949 states and 109135 transitions. [2023-12-02 12:44:27,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 12:44:27,614 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:44:27,614 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:44:27,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-12-02 12:44:27,615 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:44:27,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:44:27,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1820068823, now seen corresponding path program 1 times [2023-12-02 12:44:27,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:44:27,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521613235] [2023-12-02 12:44:27,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:44:27,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:44:27,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:44:31,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:44:31,552 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:44:31,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521613235] [2023-12-02 12:44:31,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521613235] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:44:31,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:44:31,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2023-12-02 12:44:31,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416187052] [2023-12-02 12:44:31,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:44:31,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-02 12:44:31,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:44:31,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-02 12:44:31,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=997, Unknown=0, NotChecked=0, Total=1122 [2023-12-02 12:44:31,554 INFO L87 Difference]: Start difference. First operand 75949 states and 109135 transitions. Second operand has 34 states, 34 states have (on average 2.588235294117647) internal successors, (88), 33 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:44:40,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:44:40,447 INFO L93 Difference]: Finished difference Result 96675 states and 138995 transitions. [2023-12-02 12:44:40,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-02 12:44:40,448 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.588235294117647) internal successors, (88), 33 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2023-12-02 12:44:40,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:44:40,544 INFO L225 Difference]: With dead ends: 96675 [2023-12-02 12:44:40,544 INFO L226 Difference]: Without dead ends: 87777 [2023-12-02 12:44:40,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=952, Invalid=3338, Unknown=0, NotChecked=0, Total=4290 [2023-12-02 12:44:40,567 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 1767 mSDsluCounter, 5014 mSDsCounter, 0 mSdLazyCounter, 3131 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1767 SdHoareTripleChecker+Valid, 5430 SdHoareTripleChecker+Invalid, 3144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 3131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-02 12:44:40,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1767 Valid, 5430 Invalid, 3144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 3131 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-02 12:44:40,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87777 states. [2023-12-02 12:44:41,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87777 to 75955. [2023-12-02 12:44:41,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75955 states, 75954 states have (on average 1.436948679463886) internal successors, (109142), 75954 states have internal predecessors, (109142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:44:41,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75955 states to 75955 states and 109142 transitions. [2023-12-02 12:44:41,501 INFO L78 Accepts]: Start accepts. Automaton has 75955 states and 109142 transitions. Word has length 88 [2023-12-02 12:44:41,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:44:41,501 INFO L495 AbstractCegarLoop]: Abstraction has 75955 states and 109142 transitions. [2023-12-02 12:44:41,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.588235294117647) internal successors, (88), 33 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:44:41,502 INFO L276 IsEmpty]: Start isEmpty. Operand 75955 states and 109142 transitions. [2023-12-02 12:44:41,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 12:44:41,503 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:44:41,503 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:44:41,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-12-02 12:44:41,504 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:44:41,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:44:41,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1586615305, now seen corresponding path program 1 times [2023-12-02 12:44:41,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:44:41,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481867283] [2023-12-02 12:44:41,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:44:41,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:44:41,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:44:42,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:44:42,926 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:44:42,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481867283] [2023-12-02 12:44:42,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481867283] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:44:42,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:44:42,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-12-02 12:44:42,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398910266] [2023-12-02 12:44:42,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:44:42,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-02 12:44:42,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:44:42,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-02 12:44:42,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2023-12-02 12:44:42,929 INFO L87 Difference]: Start difference. First operand 75955 states and 109142 transitions. Second operand has 22 states, 22 states have (on average 4.0) internal successors, (88), 22 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:44:44,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:44:44,928 INFO L93 Difference]: Finished difference Result 121388 states and 174523 transitions. [2023-12-02 12:44:44,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-02 12:44:44,929 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.0) internal successors, (88), 22 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2023-12-02 12:44:44,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:44:45,084 INFO L225 Difference]: With dead ends: 121388 [2023-12-02 12:44:45,084 INFO L226 Difference]: Without dead ends: 112042 [2023-12-02 12:44:45,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=328, Invalid=1004, Unknown=0, NotChecked=0, Total=1332 [2023-12-02 12:44:45,116 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 1245 mSDsluCounter, 1831 mSDsCounter, 0 mSdLazyCounter, 984 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1245 SdHoareTripleChecker+Valid, 2255 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 12:44:45,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1245 Valid, 2255 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 984 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 12:44:45,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112042 states. [2023-12-02 12:44:45,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112042 to 75966. [2023-12-02 12:44:46,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75966 states, 75965 states have (on average 1.4369248996248272) internal successors, (109156), 75965 states have internal predecessors, (109156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:44:46,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75966 states to 75966 states and 109156 transitions. [2023-12-02 12:44:46,158 INFO L78 Accepts]: Start accepts. Automaton has 75966 states and 109156 transitions. Word has length 88 [2023-12-02 12:44:46,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:44:46,159 INFO L495 AbstractCegarLoop]: Abstraction has 75966 states and 109156 transitions. [2023-12-02 12:44:46,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.0) internal successors, (88), 22 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:44:46,159 INFO L276 IsEmpty]: Start isEmpty. Operand 75966 states and 109156 transitions. [2023-12-02 12:44:46,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 12:44:46,160 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:44:46,160 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:44:46,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-12-02 12:44:46,161 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:44:46,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:44:46,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1240073239, now seen corresponding path program 1 times [2023-12-02 12:44:46,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:44:46,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000871170] [2023-12-02 12:44:46,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:44:46,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:44:46,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:44:48,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:44:48,036 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:44:48,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000871170] [2023-12-02 12:44:48,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000871170] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:44:48,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:44:48,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2023-12-02 12:44:48,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821350516] [2023-12-02 12:44:48,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:44:48,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-02 12:44:48,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:44:48,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-02 12:44:48,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2023-12-02 12:44:48,038 INFO L87 Difference]: Start difference. First operand 75966 states and 109156 transitions. Second operand has 25 states, 25 states have (on average 3.52) internal successors, (88), 24 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:44:50,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:44:50,698 INFO L93 Difference]: Finished difference Result 88252 states and 126644 transitions. [2023-12-02 12:44:50,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-02 12:44:50,698 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.52) internal successors, (88), 24 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2023-12-02 12:44:50,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:44:50,800 INFO L225 Difference]: With dead ends: 88252 [2023-12-02 12:44:50,800 INFO L226 Difference]: Without dead ends: 88250 [2023-12-02 12:44:50,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=377, Invalid=1429, Unknown=0, NotChecked=0, Total=1806 [2023-12-02 12:44:50,820 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 1347 mSDsluCounter, 1664 mSDsCounter, 0 mSdLazyCounter, 2084 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1347 SdHoareTripleChecker+Valid, 1924 SdHoareTripleChecker+Invalid, 2094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-02 12:44:50,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1347 Valid, 1924 Invalid, 2094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 2084 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-02 12:44:50,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88250 states. [2023-12-02 12:44:51,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88250 to 75965. [2023-12-02 12:44:51,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75965 states, 75964 states have (on average 1.4369174872307935) internal successors, (109154), 75964 states have internal predecessors, (109154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:44:51,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75965 states to 75965 states and 109154 transitions. [2023-12-02 12:44:51,631 INFO L78 Accepts]: Start accepts. Automaton has 75965 states and 109154 transitions. Word has length 88 [2023-12-02 12:44:51,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:44:51,631 INFO L495 AbstractCegarLoop]: Abstraction has 75965 states and 109154 transitions. [2023-12-02 12:44:51,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.52) internal successors, (88), 24 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:44:51,631 INFO L276 IsEmpty]: Start isEmpty. Operand 75965 states and 109154 transitions. [2023-12-02 12:44:51,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 12:44:51,633 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:44:51,633 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:44:51,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-12-02 12:44:51,633 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:44:51,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:44:51,633 INFO L85 PathProgramCache]: Analyzing trace with hash -258923529, now seen corresponding path program 1 times [2023-12-02 12:44:51,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:44:51,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121389558] [2023-12-02 12:44:51,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:44:51,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:44:51,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:44:53,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:44:53,219 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:44:53,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121389558] [2023-12-02 12:44:53,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121389558] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:44:53,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:44:53,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-12-02 12:44:53,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407710233] [2023-12-02 12:44:53,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:44:53,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-02 12:44:53,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:44:53,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-02 12:44:53,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2023-12-02 12:44:53,221 INFO L87 Difference]: Start difference. First operand 75965 states and 109154 transitions. Second operand has 22 states, 22 states have (on average 4.0) internal successors, (88), 22 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:44:54,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:44:54,517 INFO L93 Difference]: Finished difference Result 92623 states and 132991 transitions. [2023-12-02 12:44:54,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-02 12:44:54,518 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.0) internal successors, (88), 22 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2023-12-02 12:44:54,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:44:54,611 INFO L225 Difference]: With dead ends: 92623 [2023-12-02 12:44:54,611 INFO L226 Difference]: Without dead ends: 87949 [2023-12-02 12:44:54,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=332, Invalid=1000, Unknown=0, NotChecked=0, Total=1332 [2023-12-02 12:44:54,631 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 1327 mSDsluCounter, 1302 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1327 SdHoareTripleChecker+Valid, 1711 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 12:44:54,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1327 Valid, 1711 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 12:44:54,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87949 states. [2023-12-02 12:44:55,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87949 to 75961. [2023-12-02 12:44:55,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75961 states, 75960 states have (on average 1.4369273301737757) internal successors, (109149), 75960 states have internal predecessors, (109149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:44:55,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75961 states to 75961 states and 109149 transitions. [2023-12-02 12:44:55,538 INFO L78 Accepts]: Start accepts. Automaton has 75961 states and 109149 transitions. Word has length 88 [2023-12-02 12:44:55,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:44:55,539 INFO L495 AbstractCegarLoop]: Abstraction has 75961 states and 109149 transitions. [2023-12-02 12:44:55,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.0) internal successors, (88), 22 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:44:55,539 INFO L276 IsEmpty]: Start isEmpty. Operand 75961 states and 109149 transitions. [2023-12-02 12:44:55,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 12:44:55,540 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:44:55,540 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:44:55,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-12-02 12:44:55,540 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:44:55,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:44:55,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1727202281, now seen corresponding path program 1 times [2023-12-02 12:44:55,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:44:55,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142696089] [2023-12-02 12:44:55,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:44:55,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:44:55,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:44:56,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:44:56,898 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:44:56,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142696089] [2023-12-02 12:44:56,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142696089] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:44:56,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:44:56,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2023-12-02 12:44:56,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082022658] [2023-12-02 12:44:56,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:44:56,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-02 12:44:56,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:44:56,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-02 12:44:56,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2023-12-02 12:44:56,988 INFO L87 Difference]: Start difference. First operand 75961 states and 109149 transitions. Second operand has 23 states, 23 states have (on average 3.8260869565217392) internal successors, (88), 23 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:44:59,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:44:59,007 INFO L93 Difference]: Finished difference Result 134467 states and 192876 transitions. [2023-12-02 12:44:59,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-02 12:44:59,008 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.8260869565217392) internal successors, (88), 23 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2023-12-02 12:44:59,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:44:59,171 INFO L225 Difference]: With dead ends: 134467 [2023-12-02 12:44:59,171 INFO L226 Difference]: Without dead ends: 134465 [2023-12-02 12:44:59,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=473, Invalid=1333, Unknown=0, NotChecked=0, Total=1806 [2023-12-02 12:44:59,200 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 1218 mSDsluCounter, 1972 mSDsCounter, 0 mSdLazyCounter, 996 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1218 SdHoareTripleChecker+Valid, 2416 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 12:44:59,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1218 Valid, 2416 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 996 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 12:44:59,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134465 states. [2023-12-02 12:45:00,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134465 to 75978. [2023-12-02 12:45:00,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75978 states, 75977 states have (on average 1.4368690524764074) internal successors, (109169), 75977 states have internal predecessors, (109169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:45:00,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75978 states to 75978 states and 109169 transitions. [2023-12-02 12:45:00,367 INFO L78 Accepts]: Start accepts. Automaton has 75978 states and 109169 transitions. Word has length 88 [2023-12-02 12:45:00,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:45:00,368 INFO L495 AbstractCegarLoop]: Abstraction has 75978 states and 109169 transitions. [2023-12-02 12:45:00,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.8260869565217392) internal successors, (88), 23 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:45:00,368 INFO L276 IsEmpty]: Start isEmpty. Operand 75978 states and 109169 transitions. [2023-12-02 12:45:00,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 12:45:00,370 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:45:00,370 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:45:00,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-12-02 12:45:00,370 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:45:00,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:45:00,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1509397559, now seen corresponding path program 1 times [2023-12-02 12:45:00,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:45:00,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960896502] [2023-12-02 12:45:00,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:45:00,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:45:00,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:45:03,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:45:03,947 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:45:03,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960896502] [2023-12-02 12:45:03,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960896502] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:45:03,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:45:03,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2023-12-02 12:45:03,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422895817] [2023-12-02 12:45:03,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:45:03,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-02 12:45:03,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:45:03,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-02 12:45:03,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=788, Unknown=0, NotChecked=0, Total=930 [2023-12-02 12:45:03,949 INFO L87 Difference]: Start difference. First operand 75978 states and 109169 transitions. Second operand has 31 states, 31 states have (on average 2.838709677419355) internal successors, (88), 30 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:45:08,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:45:08,923 INFO L93 Difference]: Finished difference Result 138149 states and 198519 transitions. [2023-12-02 12:45:08,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-02 12:45:08,923 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.838709677419355) internal successors, (88), 30 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2023-12-02 12:45:08,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:45:09,021 INFO L225 Difference]: With dead ends: 138149 [2023-12-02 12:45:09,021 INFO L226 Difference]: Without dead ends: 88197 [2023-12-02 12:45:09,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 640 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=855, Invalid=2805, Unknown=0, NotChecked=0, Total=3660 [2023-12-02 12:45:09,054 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 1595 mSDsluCounter, 4858 mSDsCounter, 0 mSdLazyCounter, 2131 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1595 SdHoareTripleChecker+Valid, 5362 SdHoareTripleChecker+Invalid, 2148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-02 12:45:09,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1595 Valid, 5362 Invalid, 2148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2131 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-02 12:45:09,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88197 states. [2023-12-02 12:45:09,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88197 to 75915. [2023-12-02 12:45:09,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75915 states, 75914 states have (on average 1.4370076665700662) internal successors, (109089), 75914 states have internal predecessors, (109089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:45:10,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75915 states to 75915 states and 109089 transitions. [2023-12-02 12:45:10,108 INFO L78 Accepts]: Start accepts. Automaton has 75915 states and 109089 transitions. Word has length 88 [2023-12-02 12:45:10,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:45:10,108 INFO L495 AbstractCegarLoop]: Abstraction has 75915 states and 109089 transitions. [2023-12-02 12:45:10,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.838709677419355) internal successors, (88), 30 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:45:10,109 INFO L276 IsEmpty]: Start isEmpty. Operand 75915 states and 109089 transitions. [2023-12-02 12:45:10,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 12:45:10,110 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:45:10,110 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:45:10,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-12-02 12:45:10,110 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:45:10,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:45:10,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1568660553, now seen corresponding path program 1 times [2023-12-02 12:45:10,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:45:10,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046170697] [2023-12-02 12:45:10,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:45:10,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:45:10,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:45:12,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:45:12,270 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:45:12,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046170697] [2023-12-02 12:45:12,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046170697] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:45:12,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:45:12,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2023-12-02 12:45:12,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19371584] [2023-12-02 12:45:12,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:45:12,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-02 12:45:12,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:45:12,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-02 12:45:12,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=650, Unknown=0, NotChecked=0, Total=756 [2023-12-02 12:45:12,272 INFO L87 Difference]: Start difference. First operand 75915 states and 109089 transitions. Second operand has 28 states, 28 states have (on average 3.142857142857143) internal successors, (88), 27 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:45:15,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:45:15,680 INFO L93 Difference]: Finished difference Result 102760 states and 147639 transitions. [2023-12-02 12:45:15,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-02 12:45:15,681 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.142857142857143) internal successors, (88), 27 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2023-12-02 12:45:15,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:45:15,779 INFO L225 Difference]: With dead ends: 102760 [2023-12-02 12:45:15,779 INFO L226 Difference]: Without dead ends: 93862 [2023-12-02 12:45:15,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=648, Invalid=2214, Unknown=0, NotChecked=0, Total=2862 [2023-12-02 12:45:15,798 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 1532 mSDsluCounter, 2077 mSDsCounter, 0 mSdLazyCounter, 2608 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1532 SdHoareTripleChecker+Valid, 2340 SdHoareTripleChecker+Invalid, 2622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-02 12:45:15,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1532 Valid, 2340 Invalid, 2622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2608 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-02 12:45:15,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93862 states. [2023-12-02 12:45:16,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93862 to 75915. [2023-12-02 12:45:16,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75915 states, 75914 states have (on average 1.4370076665700662) internal successors, (109089), 75914 states have internal predecessors, (109089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:45:16,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75915 states to 75915 states and 109089 transitions. [2023-12-02 12:45:16,854 INFO L78 Accepts]: Start accepts. Automaton has 75915 states and 109089 transitions. Word has length 88 [2023-12-02 12:45:16,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:45:16,854 INFO L495 AbstractCegarLoop]: Abstraction has 75915 states and 109089 transitions. [2023-12-02 12:45:16,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.142857142857143) internal successors, (88), 27 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:45:16,854 INFO L276 IsEmpty]: Start isEmpty. Operand 75915 states and 109089 transitions. [2023-12-02 12:45:16,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 12:45:16,855 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:45:16,856 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:45:16,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-12-02 12:45:16,856 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:45:16,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:45:16,857 INFO L85 PathProgramCache]: Analyzing trace with hash -680377385, now seen corresponding path program 1 times [2023-12-02 12:45:16,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:45:16,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50695746] [2023-12-02 12:45:16,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:45:16,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:45:16,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:45:18,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:45:18,307 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:45:18,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50695746] [2023-12-02 12:45:18,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50695746] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:45:18,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:45:18,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-12-02 12:45:18,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614183392] [2023-12-02 12:45:18,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:45:18,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-02 12:45:18,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:45:18,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-02 12:45:18,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2023-12-02 12:45:18,308 INFO L87 Difference]: Start difference. First operand 75915 states and 109089 transitions. Second operand has 22 states, 22 states have (on average 4.0) internal successors, (88), 22 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:45:19,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:45:19,846 INFO L93 Difference]: Finished difference Result 150642 states and 216068 transitions. [2023-12-02 12:45:19,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-02 12:45:19,846 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.0) internal successors, (88), 22 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2023-12-02 12:45:19,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:45:20,022 INFO L225 Difference]: With dead ends: 150642 [2023-12-02 12:45:20,022 INFO L226 Difference]: Without dead ends: 141296 [2023-12-02 12:45:20,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=305, Invalid=955, Unknown=0, NotChecked=0, Total=1260 [2023-12-02 12:45:20,054 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 1001 mSDsluCounter, 2768 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 3172 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 12:45:20,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1001 Valid, 3172 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 12:45:20,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141296 states. [2023-12-02 12:45:21,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141296 to 75899. [2023-12-02 12:45:21,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75899 states, 75898 states have (on average 1.4370734406703733) internal successors, (109071), 75898 states have internal predecessors, (109071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:45:21,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75899 states to 75899 states and 109071 transitions. [2023-12-02 12:45:21,214 INFO L78 Accepts]: Start accepts. Automaton has 75899 states and 109071 transitions. Word has length 88 [2023-12-02 12:45:21,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:45:21,215 INFO L495 AbstractCegarLoop]: Abstraction has 75899 states and 109071 transitions. [2023-12-02 12:45:21,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.0) internal successors, (88), 22 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:45:21,215 INFO L276 IsEmpty]: Start isEmpty. Operand 75899 states and 109071 transitions. [2023-12-02 12:45:21,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 12:45:21,216 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:45:21,216 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:45:21,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-12-02 12:45:21,216 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:45:21,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:45:21,217 INFO L85 PathProgramCache]: Analyzing trace with hash 2146311159, now seen corresponding path program 1 times [2023-12-02 12:45:21,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:45:21,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055869561] [2023-12-02 12:45:21,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:45:21,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:45:21,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:45:23,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:45:23,452 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:45:23,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055869561] [2023-12-02 12:45:23,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055869561] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:45:23,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:45:23,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2023-12-02 12:45:23,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761609608] [2023-12-02 12:45:23,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:45:23,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-02 12:45:23,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:45:23,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-02 12:45:23,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=604, Unknown=0, NotChecked=0, Total=702 [2023-12-02 12:45:23,454 INFO L87 Difference]: Start difference. First operand 75899 states and 109071 transitions. Second operand has 27 states, 27 states have (on average 3.259259259259259) internal successors, (88), 26 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:45:27,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:45:27,581 INFO L93 Difference]: Finished difference Result 100539 states and 144257 transitions. [2023-12-02 12:45:27,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-02 12:45:27,581 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.259259259259259) internal successors, (88), 26 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2023-12-02 12:45:27,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:45:27,695 INFO L225 Difference]: With dead ends: 100539 [2023-12-02 12:45:27,695 INFO L226 Difference]: Without dead ends: 100537 [2023-12-02 12:45:27,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=516, Invalid=1836, Unknown=0, NotChecked=0, Total=2352 [2023-12-02 12:45:27,712 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 1549 mSDsluCounter, 3331 mSDsCounter, 0 mSdLazyCounter, 4160 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 3625 SdHoareTripleChecker+Invalid, 4173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 4160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-02 12:45:27,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1549 Valid, 3625 Invalid, 4173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 4160 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-02 12:45:27,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100537 states. [2023-12-02 12:45:28,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100537 to 75888. [2023-12-02 12:45:28,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75888 states, 75887 states have (on average 1.4370972630358296) internal successors, (109057), 75887 states have internal predecessors, (109057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:45:28,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75888 states to 75888 states and 109057 transitions. [2023-12-02 12:45:28,775 INFO L78 Accepts]: Start accepts. Automaton has 75888 states and 109057 transitions. Word has length 88 [2023-12-02 12:45:28,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:45:28,775 INFO L495 AbstractCegarLoop]: Abstraction has 75888 states and 109057 transitions. [2023-12-02 12:45:28,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.259259259259259) internal successors, (88), 26 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:45:28,776 INFO L276 IsEmpty]: Start isEmpty. Operand 75888 states and 109057 transitions. [2023-12-02 12:45:28,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 12:45:28,777 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:45:28,777 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:45:28,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-12-02 12:45:28,778 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:45:28,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:45:28,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1560478825, now seen corresponding path program 1 times [2023-12-02 12:45:28,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:45:28,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7017663] [2023-12-02 12:45:28,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:45:28,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:45:28,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:45:30,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:45:30,373 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:45:30,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7017663] [2023-12-02 12:45:30,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7017663] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:45:30,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:45:30,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2023-12-02 12:45:30,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123463740] [2023-12-02 12:45:30,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:45:30,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-02 12:45:30,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:45:30,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-02 12:45:30,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2023-12-02 12:45:30,375 INFO L87 Difference]: Start difference. First operand 75888 states and 109057 transitions. Second operand has 23 states, 23 states have (on average 3.8260869565217392) internal successors, (88), 23 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:45:32,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:45:32,088 INFO L93 Difference]: Finished difference Result 142180 states and 204482 transitions. [2023-12-02 12:45:32,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-02 12:45:32,089 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.8260869565217392) internal successors, (88), 23 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2023-12-02 12:45:32,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:45:32,240 INFO L225 Difference]: With dead ends: 142180 [2023-12-02 12:45:32,241 INFO L226 Difference]: Without dead ends: 124386 [2023-12-02 12:45:32,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=351, Invalid=1055, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 12:45:32,272 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 1338 mSDsluCounter, 2904 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1338 SdHoareTripleChecker+Valid, 3319 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 12:45:32,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1338 Valid, 3319 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 834 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 12:45:32,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124386 states. [2023-12-02 12:45:33,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124386 to 75861. [2023-12-02 12:45:33,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75861 states, 75860 states have (on average 1.437226469812813) internal successors, (109028), 75860 states have internal predecessors, (109028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:45:33,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75861 states to 75861 states and 109028 transitions. [2023-12-02 12:45:33,549 INFO L78 Accepts]: Start accepts. Automaton has 75861 states and 109028 transitions. Word has length 88 [2023-12-02 12:45:33,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:45:33,549 INFO L495 AbstractCegarLoop]: Abstraction has 75861 states and 109028 transitions. [2023-12-02 12:45:33,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.8260869565217392) internal successors, (88), 23 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:45:33,549 INFO L276 IsEmpty]: Start isEmpty. Operand 75861 states and 109028 transitions. [2023-12-02 12:45:33,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 12:45:33,550 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:45:33,551 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:45:33,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-12-02 12:45:33,551 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:45:33,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:45:33,552 INFO L85 PathProgramCache]: Analyzing trace with hash -672195657, now seen corresponding path program 1 times [2023-12-02 12:45:33,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:45:33,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221720964] [2023-12-02 12:45:33,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:45:33,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:45:33,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:45:35,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:45:35,100 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:45:35,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221720964] [2023-12-02 12:45:35,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221720964] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:45:35,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:45:35,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-12-02 12:45:35,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404904958] [2023-12-02 12:45:35,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:45:35,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-02 12:45:35,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:45:35,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-02 12:45:35,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2023-12-02 12:45:35,102 INFO L87 Difference]: Start difference. First operand 75861 states and 109028 transitions. Second operand has 22 states, 22 states have (on average 4.0) internal successors, (88), 22 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:45:36,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:45:36,628 INFO L93 Difference]: Finished difference Result 112168 states and 160740 transitions. [2023-12-02 12:45:36,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-02 12:45:36,628 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.0) internal successors, (88), 22 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2023-12-02 12:45:36,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:45:36,753 INFO L225 Difference]: With dead ends: 112168 [2023-12-02 12:45:36,753 INFO L226 Difference]: Without dead ends: 107494 [2023-12-02 12:45:36,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2023-12-02 12:45:36,777 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 1160 mSDsluCounter, 2777 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1160 SdHoareTripleChecker+Valid, 3204 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 12:45:36,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1160 Valid, 3204 Invalid, 900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 12:45:36,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107494 states. [2023-12-02 12:45:37,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107494 to 75861. [2023-12-02 12:45:37,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75861 states, 75860 states have (on average 1.437226469812813) internal successors, (109028), 75860 states have internal predecessors, (109028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:45:37,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75861 states to 75861 states and 109028 transitions. [2023-12-02 12:45:37,840 INFO L78 Accepts]: Start accepts. Automaton has 75861 states and 109028 transitions. Word has length 88 [2023-12-02 12:45:37,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:45:37,841 INFO L495 AbstractCegarLoop]: Abstraction has 75861 states and 109028 transitions. [2023-12-02 12:45:37,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.0) internal successors, (88), 22 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:45:37,841 INFO L276 IsEmpty]: Start isEmpty. Operand 75861 states and 109028 transitions. [2023-12-02 12:45:37,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 12:45:37,842 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:45:37,842 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:45:37,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-12-02 12:45:37,842 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:45:37,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:45:37,843 INFO L85 PathProgramCache]: Analyzing trace with hash -2140474409, now seen corresponding path program 1 times [2023-12-02 12:45:37,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:45:37,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445540351] [2023-12-02 12:45:37,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:45:37,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:45:37,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:45:41,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:45:41,663 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:45:41,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445540351] [2023-12-02 12:45:41,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445540351] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:45:41,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:45:41,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2023-12-02 12:45:41,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406097285] [2023-12-02 12:45:41,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:45:41,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-02 12:45:41,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:45:41,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-02 12:45:41,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=767, Unknown=0, NotChecked=0, Total=870 [2023-12-02 12:45:41,665 INFO L87 Difference]: Start difference. First operand 75861 states and 109028 transitions. Second operand has 30 states, 30 states have (on average 2.933333333333333) internal successors, (88), 29 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:45:48,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:45:48,830 INFO L93 Difference]: Finished difference Result 102201 states and 146365 transitions. [2023-12-02 12:45:48,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-02 12:45:48,831 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.933333333333333) internal successors, (88), 29 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2023-12-02 12:45:48,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:45:48,950 INFO L225 Difference]: With dead ends: 102201 [2023-12-02 12:45:48,950 INFO L226 Difference]: Without dead ends: 102199 [2023-12-02 12:45:48,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 514 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=878, Invalid=2662, Unknown=0, NotChecked=0, Total=3540 [2023-12-02 12:45:48,972 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 2117 mSDsluCounter, 4576 mSDsCounter, 0 mSdLazyCounter, 2378 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2117 SdHoareTripleChecker+Valid, 5025 SdHoareTripleChecker+Invalid, 2401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-02 12:45:48,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2117 Valid, 5025 Invalid, 2401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2378 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-02 12:45:49,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102199 states. [2023-12-02 12:45:49,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102199 to 75864. [2023-12-02 12:45:49,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75864 states, 75863 states have (on average 1.4372223613619288) internal successors, (109032), 75863 states have internal predecessors, (109032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:45:50,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75864 states to 75864 states and 109032 transitions. [2023-12-02 12:45:50,064 INFO L78 Accepts]: Start accepts. Automaton has 75864 states and 109032 transitions. Word has length 88 [2023-12-02 12:45:50,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:45:50,064 INFO L495 AbstractCegarLoop]: Abstraction has 75864 states and 109032 transitions. [2023-12-02 12:45:50,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.933333333333333) internal successors, (88), 29 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:45:50,065 INFO L276 IsEmpty]: Start isEmpty. Operand 75864 states and 109032 transitions. [2023-12-02 12:45:50,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 12:45:50,066 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:45:50,066 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:45:50,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-12-02 12:45:50,067 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:45:50,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:45:50,067 INFO L85 PathProgramCache]: Analyzing trace with hash -2057006217, now seen corresponding path program 1 times [2023-12-02 12:45:50,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:45:50,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323261769] [2023-12-02 12:45:50,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:45:50,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:45:50,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:45:54,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:45:54,038 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:45:54,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323261769] [2023-12-02 12:45:54,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323261769] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:45:54,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:45:54,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2023-12-02 12:45:54,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329969248] [2023-12-02 12:45:54,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:45:54,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-02 12:45:54,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:45:54,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-02 12:45:54,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=866, Unknown=0, NotChecked=0, Total=992 [2023-12-02 12:45:54,040 INFO L87 Difference]: Start difference. First operand 75864 states and 109032 transitions. Second operand has 32 states, 32 states have (on average 2.75) internal successors, (88), 31 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:46:02,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:46:02,036 INFO L93 Difference]: Finished difference Result 110775 states and 159214 transitions. [2023-12-02 12:46:02,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-02 12:46:02,037 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.75) internal successors, (88), 31 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2023-12-02 12:46:02,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:46:02,168 INFO L225 Difference]: With dead ends: 110775 [2023-12-02 12:46:02,168 INFO L226 Difference]: Without dead ends: 110773 [2023-12-02 12:46:02,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=623, Invalid=2347, Unknown=0, NotChecked=0, Total=2970 [2023-12-02 12:46:02,192 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 1263 mSDsluCounter, 3602 mSDsCounter, 0 mSdLazyCounter, 5419 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1263 SdHoareTripleChecker+Valid, 3874 SdHoareTripleChecker+Invalid, 5430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 5419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-02 12:46:02,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1263 Valid, 3874 Invalid, 5430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 5419 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-12-02 12:46:02,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110773 states. [2023-12-02 12:46:03,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110773 to 75891. [2023-12-02 12:46:03,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75891 states, 75890 states have (on average 1.437132692054289) internal successors, (109064), 75890 states have internal predecessors, (109064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:46:03,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75891 states to 75891 states and 109064 transitions. [2023-12-02 12:46:03,215 INFO L78 Accepts]: Start accepts. Automaton has 75891 states and 109064 transitions. Word has length 88 [2023-12-02 12:46:03,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:46:03,216 INFO L495 AbstractCegarLoop]: Abstraction has 75891 states and 109064 transitions. [2023-12-02 12:46:03,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.75) internal successors, (88), 31 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:46:03,216 INFO L276 IsEmpty]: Start isEmpty. Operand 75891 states and 109064 transitions. [2023-12-02 12:46:03,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-02 12:46:03,217 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:46:03,217 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:46:03,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-12-02 12:46:03,217 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:46:03,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:46:03,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1040044391, now seen corresponding path program 1 times [2023-12-02 12:46:03,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:46:03,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130405447] [2023-12-02 12:46:03,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:46:03,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:46:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:46:03,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:46:03,262 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:46:03,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130405447] [2023-12-02 12:46:03,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130405447] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:46:03,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:46:03,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 12:46:03,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83584258] [2023-12-02 12:46:03,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:46:03,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:46:03,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:46:03,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:46:03,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:46:03,263 INFO L87 Difference]: Start difference. First operand 75891 states and 109064 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:46:03,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:46:03,654 INFO L93 Difference]: Finished difference Result 139653 states and 201005 transitions. [2023-12-02 12:46:03,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:46:03,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2023-12-02 12:46:03,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:46:03,738 INFO L225 Difference]: With dead ends: 139653 [2023-12-02 12:46:03,738 INFO L226 Difference]: Without dead ends: 73862 [2023-12-02 12:46:03,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:46:03,772 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 155 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:46:03,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 444 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 12:46:03,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73862 states. [2023-12-02 12:46:04,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73862 to 73860. [2023-12-02 12:46:04,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73860 states, 73859 states have (on average 1.4355190295021596) internal successors, (106026), 73859 states have internal predecessors, (106026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:46:04,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73860 states to 73860 states and 106026 transitions. [2023-12-02 12:46:04,759 INFO L78 Accepts]: Start accepts. Automaton has 73860 states and 106026 transitions. Word has length 89 [2023-12-02 12:46:04,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:46:04,759 INFO L495 AbstractCegarLoop]: Abstraction has 73860 states and 106026 transitions. [2023-12-02 12:46:04,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:46:04,759 INFO L276 IsEmpty]: Start isEmpty. Operand 73860 states and 106026 transitions. [2023-12-02 12:46:04,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-02 12:46:04,761 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:46:04,761 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:46:04,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-12-02 12:46:04,761 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:46:04,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:46:04,762 INFO L85 PathProgramCache]: Analyzing trace with hash 21691990, now seen corresponding path program 1 times [2023-12-02 12:46:04,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:46:04,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754393922] [2023-12-02 12:46:04,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:46:04,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:46:04,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:46:04,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:46:04,822 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:46:04,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754393922] [2023-12-02 12:46:04,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754393922] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:46:04,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:46:04,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 12:46:04,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114720777] [2023-12-02 12:46:04,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:46:04,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:46:04,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:46:04,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:46:04,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:46:04,824 INFO L87 Difference]: Start difference. First operand 73860 states and 106026 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:46:05,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:46:05,474 INFO L93 Difference]: Finished difference Result 133504 states and 192017 transitions. [2023-12-02 12:46:05,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:46:05,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2023-12-02 12:46:05,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:46:05,543 INFO L225 Difference]: With dead ends: 133504 [2023-12-02 12:46:05,544 INFO L226 Difference]: Without dead ends: 65125 [2023-12-02 12:46:05,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:46:05,561 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 162 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:46:05,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 428 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 12:46:05,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65125 states. [2023-12-02 12:46:06,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65125 to 65123. [2023-12-02 12:46:06,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65123 states, 65122 states have (on average 1.432280949602285) internal successors, (93273), 65122 states have internal predecessors, (93273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:46:06,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65123 states to 65123 states and 93273 transitions. [2023-12-02 12:46:06,487 INFO L78 Accepts]: Start accepts. Automaton has 65123 states and 93273 transitions. Word has length 89 [2023-12-02 12:46:06,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:46:06,487 INFO L495 AbstractCegarLoop]: Abstraction has 65123 states and 93273 transitions. [2023-12-02 12:46:06,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:46:06,487 INFO L276 IsEmpty]: Start isEmpty. Operand 65123 states and 93273 transitions. [2023-12-02 12:46:06,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-02 12:46:06,488 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:46:06,488 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:46:06,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-12-02 12:46:06,488 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:46:06,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:46:06,489 INFO L85 PathProgramCache]: Analyzing trace with hash 960885795, now seen corresponding path program 1 times [2023-12-02 12:46:06,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:46:06,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533145612] [2023-12-02 12:46:06,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:46:06,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:46:06,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:46:14,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:46:14,940 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:46:14,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533145612] [2023-12-02 12:46:14,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533145612] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:46:14,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:46:14,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2023-12-02 12:46:14,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362472129] [2023-12-02 12:46:14,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:46:14,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-02 12:46:14,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:46:14,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-02 12:46:14,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1265, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 12:46:14,941 INFO L87 Difference]: Start difference. First operand 65123 states and 93273 transitions. Second operand has 38 states, 38 states have (on average 2.3684210526315788) internal successors, (90), 37 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:46:31,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:46:31,814 INFO L93 Difference]: Finished difference Result 77685 states and 111098 transitions. [2023-12-02 12:46:31,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-02 12:46:31,815 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.3684210526315788) internal successors, (90), 37 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2023-12-02 12:46:31,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:46:31,899 INFO L225 Difference]: With dead ends: 77685 [2023-12-02 12:46:31,899 INFO L226 Difference]: Without dead ends: 77683 [2023-12-02 12:46:31,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 965 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=1247, Invalid=4605, Unknown=0, NotChecked=0, Total=5852 [2023-12-02 12:46:31,916 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 2478 mSDsluCounter, 5039 mSDsCounter, 0 mSdLazyCounter, 7762 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2478 SdHoareTripleChecker+Valid, 5432 SdHoareTripleChecker+Invalid, 7774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 7762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2023-12-02 12:46:31,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2478 Valid, 5432 Invalid, 7774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 7762 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2023-12-02 12:46:31,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77683 states. [2023-12-02 12:46:32,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77683 to 65129. [2023-12-02 12:46:32,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65129 states, 65128 states have (on average 1.432256479547967) internal successors, (93280), 65128 states have internal predecessors, (93280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:46:32,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65129 states to 65129 states and 93280 transitions. [2023-12-02 12:46:32,686 INFO L78 Accepts]: Start accepts. Automaton has 65129 states and 93280 transitions. Word has length 90 [2023-12-02 12:46:32,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:46:32,686 INFO L495 AbstractCegarLoop]: Abstraction has 65129 states and 93280 transitions. [2023-12-02 12:46:32,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.3684210526315788) internal successors, (90), 37 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:46:32,687 INFO L276 IsEmpty]: Start isEmpty. Operand 65129 states and 93280 transitions. [2023-12-02 12:46:32,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-02 12:46:32,688 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:46:32,688 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:46:32,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-12-02 12:46:32,688 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:46:32,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:46:32,689 INFO L85 PathProgramCache]: Analyzing trace with hash 2111036419, now seen corresponding path program 1 times [2023-12-02 12:46:32,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:46:32,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276567510] [2023-12-02 12:46:32,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:46:32,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:46:32,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:46:35,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:46:35,419 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:46:35,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276567510] [2023-12-02 12:46:35,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276567510] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:46:35,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:46:35,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2023-12-02 12:46:35,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927964196] [2023-12-02 12:46:35,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:46:35,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-02 12:46:35,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:46:35,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-02 12:46:35,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=644, Unknown=0, NotChecked=0, Total=756 [2023-12-02 12:46:35,420 INFO L87 Difference]: Start difference. First operand 65129 states and 93280 transitions. Second operand has 28 states, 28 states have (on average 3.2142857142857144) internal successors, (90), 27 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:46:38,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:46:38,598 INFO L93 Difference]: Finished difference Result 78963 states and 112867 transitions. [2023-12-02 12:46:38,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-02 12:46:38,599 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.2142857142857144) internal successors, (90), 27 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2023-12-02 12:46:38,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:46:38,672 INFO L225 Difference]: With dead ends: 78963 [2023-12-02 12:46:38,672 INFO L226 Difference]: Without dead ends: 78961 [2023-12-02 12:46:38,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=546, Invalid=2004, Unknown=0, NotChecked=0, Total=2550 [2023-12-02 12:46:38,686 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 1288 mSDsluCounter, 3245 mSDsCounter, 0 mSdLazyCounter, 1541 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1288 SdHoareTripleChecker+Valid, 3621 SdHoareTripleChecker+Invalid, 1556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-02 12:46:38,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1288 Valid, 3621 Invalid, 1556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1541 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-02 12:46:38,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78961 states. [2023-12-02 12:46:39,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78961 to 65129. [2023-12-02 12:46:39,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65129 states, 65128 states have (on average 1.432256479547967) internal successors, (93280), 65128 states have internal predecessors, (93280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:46:39,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65129 states to 65129 states and 93280 transitions. [2023-12-02 12:46:39,322 INFO L78 Accepts]: Start accepts. Automaton has 65129 states and 93280 transitions. Word has length 90 [2023-12-02 12:46:39,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:46:39,322 INFO L495 AbstractCegarLoop]: Abstraction has 65129 states and 93280 transitions. [2023-12-02 12:46:39,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.2142857142857144) internal successors, (90), 27 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:46:39,322 INFO L276 IsEmpty]: Start isEmpty. Operand 65129 states and 93280 transitions. [2023-12-02 12:46:39,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-02 12:46:39,323 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:46:39,323 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:46:39,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-12-02 12:46:39,324 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:46:39,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:46:39,325 INFO L85 PathProgramCache]: Analyzing trace with hash -947514461, now seen corresponding path program 1 times [2023-12-02 12:46:39,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:46:39,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241574361] [2023-12-02 12:46:39,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:46:39,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:46:39,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:46:46,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:46:46,159 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:46:46,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241574361] [2023-12-02 12:46:46,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241574361] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:46:46,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:46:46,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2023-12-02 12:46:46,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555566160] [2023-12-02 12:46:46,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:46:46,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-02 12:46:46,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:46:46,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-02 12:46:46,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1250, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 12:46:46,161 INFO L87 Difference]: Start difference. First operand 65129 states and 93280 transitions. Second operand has 38 states, 38 states have (on average 2.3684210526315788) internal successors, (90), 37 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:46:56,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:46:56,083 INFO L93 Difference]: Finished difference Result 82389 states and 117909 transitions. [2023-12-02 12:46:56,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-02 12:46:56,084 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.3684210526315788) internal successors, (90), 37 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2023-12-02 12:46:56,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:46:56,157 INFO L225 Difference]: With dead ends: 82389 [2023-12-02 12:46:56,157 INFO L226 Difference]: Without dead ends: 78035 [2023-12-02 12:46:56,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=978, Invalid=3444, Unknown=0, NotChecked=0, Total=4422 [2023-12-02 12:46:56,174 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 1693 mSDsluCounter, 2959 mSDsCounter, 0 mSdLazyCounter, 4394 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1693 SdHoareTripleChecker+Valid, 3369 SdHoareTripleChecker+Invalid, 4401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 4394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-12-02 12:46:56,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1693 Valid, 3369 Invalid, 4401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 4394 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-12-02 12:46:56,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78035 states. [2023-12-02 12:46:56,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78035 to 65161. [2023-12-02 12:46:56,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65161 states, 65160 states have (on average 1.4321055862492327) internal successors, (93316), 65160 states have internal predecessors, (93316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:46:56,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65161 states to 65161 states and 93316 transitions. [2023-12-02 12:46:56,824 INFO L78 Accepts]: Start accepts. Automaton has 65161 states and 93316 transitions. Word has length 90 [2023-12-02 12:46:56,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:46:56,824 INFO L495 AbstractCegarLoop]: Abstraction has 65161 states and 93316 transitions. [2023-12-02 12:46:56,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.3684210526315788) internal successors, (90), 37 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:46:56,824 INFO L276 IsEmpty]: Start isEmpty. Operand 65161 states and 93316 transitions. [2023-12-02 12:46:56,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-02 12:46:56,825 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:46:56,825 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:46:56,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-12-02 12:46:56,825 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:46:56,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:46:56,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1879174083, now seen corresponding path program 1 times [2023-12-02 12:46:56,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:46:56,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393988399] [2023-12-02 12:46:56,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:46:56,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:46:56,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:47:00,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:47:00,082 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:47:00,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393988399] [2023-12-02 12:47:00,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393988399] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:47:00,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:47:00,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2023-12-02 12:47:00,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590172259] [2023-12-02 12:47:00,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:47:00,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-02 12:47:00,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:47:00,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-02 12:47:00,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=820, Unknown=0, NotChecked=0, Total=930 [2023-12-02 12:47:00,084 INFO L87 Difference]: Start difference. First operand 65161 states and 93316 transitions. Second operand has 31 states, 31 states have (on average 2.903225806451613) internal successors, (90), 30 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:47:07,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:47:07,065 INFO L93 Difference]: Finished difference Result 77847 states and 111194 transitions. [2023-12-02 12:47:07,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-02 12:47:07,065 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.903225806451613) internal successors, (90), 30 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2023-12-02 12:47:07,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:47:07,141 INFO L225 Difference]: With dead ends: 77847 [2023-12-02 12:47:07,141 INFO L226 Difference]: Without dead ends: 77845 [2023-12-02 12:47:07,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=860, Invalid=2680, Unknown=0, NotChecked=0, Total=3540 [2023-12-02 12:47:07,156 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 1616 mSDsluCounter, 4998 mSDsCounter, 0 mSdLazyCounter, 3063 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1616 SdHoareTripleChecker+Valid, 5436 SdHoareTripleChecker+Invalid, 3080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-02 12:47:07,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1616 Valid, 5436 Invalid, 3080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3063 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-02 12:47:07,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77845 states. [2023-12-02 12:47:07,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77845 to 65161. [2023-12-02 12:47:07,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65161 states, 65160 states have (on average 1.4321055862492327) internal successors, (93316), 65160 states have internal predecessors, (93316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:47:07,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65161 states to 65161 states and 93316 transitions. [2023-12-02 12:47:07,915 INFO L78 Accepts]: Start accepts. Automaton has 65161 states and 93316 transitions. Word has length 90 [2023-12-02 12:47:07,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:47:07,915 INFO L495 AbstractCegarLoop]: Abstraction has 65161 states and 93316 transitions. [2023-12-02 12:47:07,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.903225806451613) internal successors, (90), 30 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:47:07,915 INFO L276 IsEmpty]: Start isEmpty. Operand 65161 states and 93316 transitions. [2023-12-02 12:47:07,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-02 12:47:07,917 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:47:07,917 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:47:07,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-12-02 12:47:07,917 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:47:07,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:47:07,917 INFO L85 PathProgramCache]: Analyzing trace with hash 820806627, now seen corresponding path program 1 times [2023-12-02 12:47:07,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:47:07,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522179978] [2023-12-02 12:47:07,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:47:07,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:47:07,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:47:11,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:47:11,138 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:47:11,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522179978] [2023-12-02 12:47:11,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522179978] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:47:11,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:47:11,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2023-12-02 12:47:11,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358848903] [2023-12-02 12:47:11,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:47:11,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-02 12:47:11,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:47:11,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-02 12:47:11,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=681, Unknown=0, NotChecked=0, Total=812 [2023-12-02 12:47:11,139 INFO L87 Difference]: Start difference. First operand 65161 states and 93316 transitions. Second operand has 29 states, 29 states have (on average 3.103448275862069) internal successors, (90), 28 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:47:15,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:47:15,447 INFO L93 Difference]: Finished difference Result 76767 states and 109777 transitions. [2023-12-02 12:47:15,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-02 12:47:15,447 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.103448275862069) internal successors, (90), 28 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2023-12-02 12:47:15,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:47:15,518 INFO L225 Difference]: With dead ends: 76767 [2023-12-02 12:47:15,518 INFO L226 Difference]: Without dead ends: 76765 [2023-12-02 12:47:15,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=556, Invalid=1994, Unknown=0, NotChecked=0, Total=2550 [2023-12-02 12:47:15,533 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 1191 mSDsluCounter, 1462 mSDsCounter, 0 mSdLazyCounter, 2205 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1191 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 2217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-02 12:47:15,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1191 Valid, 1702 Invalid, 2217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 2205 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-02 12:47:15,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76765 states. [2023-12-02 12:47:16,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76765 to 65161. [2023-12-02 12:47:16,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65161 states, 65160 states have (on average 1.4321055862492327) internal successors, (93316), 65160 states have internal predecessors, (93316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:47:16,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65161 states to 65161 states and 93316 transitions. [2023-12-02 12:47:16,208 INFO L78 Accepts]: Start accepts. Automaton has 65161 states and 93316 transitions. Word has length 90 [2023-12-02 12:47:16,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:47:16,209 INFO L495 AbstractCegarLoop]: Abstraction has 65161 states and 93316 transitions. [2023-12-02 12:47:16,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.103448275862069) internal successors, (90), 28 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:47:16,209 INFO L276 IsEmpty]: Start isEmpty. Operand 65161 states and 93316 transitions. [2023-12-02 12:47:16,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-02 12:47:16,210 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:47:16,210 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:47:16,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-12-02 12:47:16,210 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:47:16,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:47:16,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1127316451, now seen corresponding path program 1 times [2023-12-02 12:47:16,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:47:16,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968997090] [2023-12-02 12:47:16,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:47:16,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:47:16,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:47:21,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:47:21,374 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:47:21,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968997090] [2023-12-02 12:47:21,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968997090] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:47:21,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:47:21,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2023-12-02 12:47:21,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955713546] [2023-12-02 12:47:21,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:47:21,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-02 12:47:21,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:47:21,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-02 12:47:21,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1175, Unknown=0, NotChecked=0, Total=1332 [2023-12-02 12:47:21,376 INFO L87 Difference]: Start difference. First operand 65161 states and 93316 transitions. Second operand has 37 states, 37 states have (on average 2.4324324324324325) internal successors, (90), 36 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:47:31,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:47:31,075 INFO L93 Difference]: Finished difference Result 72466 states and 103655 transitions. [2023-12-02 12:47:31,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-02 12:47:31,076 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.4324324324324325) internal successors, (90), 36 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2023-12-02 12:47:31,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:47:31,143 INFO L225 Difference]: With dead ends: 72466 [2023-12-02 12:47:31,143 INFO L226 Difference]: Without dead ends: 72464 [2023-12-02 12:47:31,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=1210, Invalid=4046, Unknown=0, NotChecked=0, Total=5256 [2023-12-02 12:47:31,159 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 1674 mSDsluCounter, 5462 mSDsCounter, 0 mSdLazyCounter, 4157 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1674 SdHoareTripleChecker+Valid, 5953 SdHoareTripleChecker+Invalid, 4170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 4157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-02 12:47:31,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1674 Valid, 5953 Invalid, 4170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 4157 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-02 12:47:31,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72464 states. [2023-12-02 12:47:31,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72464 to 65155. [2023-12-02 12:47:31,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65155 states, 65154 states have (on average 1.4321300303895386) internal successors, (93309), 65154 states have internal predecessors, (93309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:47:31,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65155 states to 65155 states and 93309 transitions. [2023-12-02 12:47:31,771 INFO L78 Accepts]: Start accepts. Automaton has 65155 states and 93309 transitions. Word has length 90 [2023-12-02 12:47:31,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:47:31,771 INFO L495 AbstractCegarLoop]: Abstraction has 65155 states and 93309 transitions. [2023-12-02 12:47:31,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.4324324324324325) internal successors, (90), 36 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:47:31,771 INFO L276 IsEmpty]: Start isEmpty. Operand 65155 states and 93309 transitions. [2023-12-02 12:47:31,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-02 12:47:31,772 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:47:31,772 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:47:31,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2023-12-02 12:47:31,772 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:47:31,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:47:31,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1931234429, now seen corresponding path program 1 times [2023-12-02 12:47:31,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:47:31,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541254445] [2023-12-02 12:47:31,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:47:31,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:47:31,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:47:35,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:47:35,505 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:47:35,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541254445] [2023-12-02 12:47:35,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541254445] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:47:35,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:47:35,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2023-12-02 12:47:35,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124473659] [2023-12-02 12:47:35,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:47:35,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-02 12:47:35,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:47:35,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-02 12:47:35,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=921, Unknown=0, NotChecked=0, Total=1056 [2023-12-02 12:47:35,506 INFO L87 Difference]: Start difference. First operand 65155 states and 93309 transitions. Second operand has 33 states, 33 states have (on average 2.727272727272727) internal successors, (90), 32 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:47:41,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:47:41,772 INFO L93 Difference]: Finished difference Result 82411 states and 117934 transitions. [2023-12-02 12:47:41,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-02 12:47:41,772 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.727272727272727) internal successors, (90), 32 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2023-12-02 12:47:41,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:47:41,845 INFO L225 Difference]: With dead ends: 82411 [2023-12-02 12:47:41,845 INFO L226 Difference]: Without dead ends: 78057 [2023-12-02 12:47:41,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=726, Invalid=2814, Unknown=0, NotChecked=0, Total=3540 [2023-12-02 12:47:41,863 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 1316 mSDsluCounter, 2481 mSDsCounter, 0 mSdLazyCounter, 3706 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1316 SdHoareTripleChecker+Valid, 2716 SdHoareTripleChecker+Invalid, 3714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 3706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:47:41,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1316 Valid, 2716 Invalid, 3714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 3706 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-02 12:47:41,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78057 states. [2023-12-02 12:47:42,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78057 to 65161. [2023-12-02 12:47:42,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65161 states, 65160 states have (on average 1.4321055862492327) internal successors, (93316), 65160 states have internal predecessors, (93316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:47:42,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65161 states to 65161 states and 93316 transitions. [2023-12-02 12:47:42,502 INFO L78 Accepts]: Start accepts. Automaton has 65161 states and 93316 transitions. Word has length 90 [2023-12-02 12:47:42,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:47:42,503 INFO L495 AbstractCegarLoop]: Abstraction has 65161 states and 93316 transitions. [2023-12-02 12:47:42,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.727272727272727) internal successors, (90), 32 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:47:42,503 INFO L276 IsEmpty]: Start isEmpty. Operand 65161 states and 93316 transitions. [2023-12-02 12:47:42,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-02 12:47:42,504 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:47:42,504 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:47:42,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2023-12-02 12:47:42,504 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:47:42,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:47:42,505 INFO L85 PathProgramCache]: Analyzing trace with hash 895454115, now seen corresponding path program 1 times [2023-12-02 12:47:42,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:47:42,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766273469] [2023-12-02 12:47:42,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:47:42,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:47:42,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:47:45,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:47:45,300 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:47:45,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766273469] [2023-12-02 12:47:45,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766273469] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:47:45,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:47:45,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2023-12-02 12:47:45,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498986853] [2023-12-02 12:47:45,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:47:45,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-02 12:47:45,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:47:45,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-02 12:47:45,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=739, Unknown=0, NotChecked=0, Total=870 [2023-12-02 12:47:45,301 INFO L87 Difference]: Start difference. First operand 65161 states and 93316 transitions. Second operand has 30 states, 30 states have (on average 3.0) internal successors, (90), 29 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:47:49,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:47:49,591 INFO L93 Difference]: Finished difference Result 76820 states and 109833 transitions. [2023-12-02 12:47:49,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-02 12:47:49,592 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.0) internal successors, (90), 29 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2023-12-02 12:47:49,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:47:49,670 INFO L225 Difference]: With dead ends: 76820 [2023-12-02 12:47:49,670 INFO L226 Difference]: Without dead ends: 76818 [2023-12-02 12:47:49,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=781, Invalid=2411, Unknown=0, NotChecked=0, Total=3192 [2023-12-02 12:47:49,686 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 1493 mSDsluCounter, 4119 mSDsCounter, 0 mSdLazyCounter, 1940 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 4521 SdHoareTripleChecker+Invalid, 1959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-02 12:47:49,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1493 Valid, 4521 Invalid, 1959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1940 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-02 12:47:49,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76818 states. [2023-12-02 12:47:50,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76818 to 65155. [2023-12-02 12:47:50,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65155 states, 65154 states have (on average 1.4321300303895386) internal successors, (93309), 65154 states have internal predecessors, (93309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:47:50,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65155 states to 65155 states and 93309 transitions. [2023-12-02 12:47:50,310 INFO L78 Accepts]: Start accepts. Automaton has 65155 states and 93309 transitions. Word has length 90 [2023-12-02 12:47:50,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:47:50,310 INFO L495 AbstractCegarLoop]: Abstraction has 65155 states and 93309 transitions. [2023-12-02 12:47:50,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.0) internal successors, (90), 29 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:47:50,310 INFO L276 IsEmpty]: Start isEmpty. Operand 65155 states and 93309 transitions. [2023-12-02 12:47:50,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-02 12:47:50,311 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:47:50,311 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:47:50,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2023-12-02 12:47:50,312 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:47:50,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:47:50,312 INFO L85 PathProgramCache]: Analyzing trace with hash -162913341, now seen corresponding path program 1 times [2023-12-02 12:47:50,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:47:50,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349206094] [2023-12-02 12:47:50,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:47:50,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:47:50,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:47:53,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:47:53,430 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:47:53,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349206094] [2023-12-02 12:47:53,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349206094] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:47:53,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:47:53,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2023-12-02 12:47:53,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367960765] [2023-12-02 12:47:53,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:47:53,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-02 12:47:53,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:47:53,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-02 12:47:53,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=764, Unknown=0, NotChecked=0, Total=870 [2023-12-02 12:47:53,432 INFO L87 Difference]: Start difference. First operand 65155 states and 93309 transitions. Second operand has 30 states, 30 states have (on average 3.0) internal successors, (90), 29 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:47:58,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:47:58,806 INFO L93 Difference]: Finished difference Result 72425 states and 103610 transitions. [2023-12-02 12:47:58,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-02 12:47:58,807 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.0) internal successors, (90), 29 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2023-12-02 12:47:58,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:47:58,874 INFO L225 Difference]: With dead ends: 72425 [2023-12-02 12:47:58,874 INFO L226 Difference]: Without dead ends: 72423 [2023-12-02 12:47:58,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=561, Invalid=2195, Unknown=0, NotChecked=0, Total=2756 [2023-12-02 12:47:58,889 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 1645 mSDsluCounter, 2740 mSDsCounter, 0 mSdLazyCounter, 4277 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1645 SdHoareTripleChecker+Valid, 3000 SdHoareTripleChecker+Invalid, 4287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 4277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-02 12:47:58,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1645 Valid, 3000 Invalid, 4287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 4277 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-02 12:47:58,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72423 states. [2023-12-02 12:47:59,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72423 to 65145. [2023-12-02 12:47:59,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65145 states, 65144 states have (on average 1.4321656637602849) internal successors, (93297), 65144 states have internal predecessors, (93297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:47:59,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65145 states to 65145 states and 93297 transitions. [2023-12-02 12:47:59,502 INFO L78 Accepts]: Start accepts. Automaton has 65145 states and 93297 transitions. Word has length 90 [2023-12-02 12:47:59,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:47:59,502 INFO L495 AbstractCegarLoop]: Abstraction has 65145 states and 93297 transitions. [2023-12-02 12:47:59,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.0) internal successors, (90), 29 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:47:59,503 INFO L276 IsEmpty]: Start isEmpty. Operand 65145 states and 93297 transitions. [2023-12-02 12:47:59,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-02 12:47:59,504 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:47:59,504 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:47:59,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2023-12-02 12:47:59,504 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:47:59,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:47:59,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1636438883, now seen corresponding path program 1 times [2023-12-02 12:47:59,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:47:59,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516184910] [2023-12-02 12:47:59,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:47:59,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:47:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:48:03,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:48:03,773 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:48:03,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516184910] [2023-12-02 12:48:03,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516184910] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:48:03,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:48:03,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2023-12-02 12:48:03,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017230529] [2023-12-02 12:48:03,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:48:03,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-02 12:48:03,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:48:03,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-02 12:48:03,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1007, Unknown=0, NotChecked=0, Total=1122 [2023-12-02 12:48:03,774 INFO L87 Difference]: Start difference. First operand 65145 states and 93297 transitions. Second operand has 34 states, 34 states have (on average 2.6470588235294117) internal successors, (90), 33 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:48:13,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:48:13,567 INFO L93 Difference]: Finished difference Result 81044 states and 115988 transitions. [2023-12-02 12:48:13,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-02 12:48:13,567 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.6470588235294117) internal successors, (90), 33 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2023-12-02 12:48:13,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:48:13,639 INFO L225 Difference]: With dead ends: 81044 [2023-12-02 12:48:13,640 INFO L226 Difference]: Without dead ends: 76626 [2023-12-02 12:48:13,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=863, Invalid=2919, Unknown=0, NotChecked=0, Total=3782 [2023-12-02 12:48:13,657 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 1662 mSDsluCounter, 4355 mSDsCounter, 0 mSdLazyCounter, 5722 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1662 SdHoareTripleChecker+Valid, 4763 SdHoareTripleChecker+Invalid, 5732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 5722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-12-02 12:48:13,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1662 Valid, 4763 Invalid, 5732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 5722 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-12-02 12:48:13,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76626 states. [2023-12-02 12:48:14,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76626 to 65145. [2023-12-02 12:48:14,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65145 states, 65144 states have (on average 1.4321656637602849) internal successors, (93297), 65144 states have internal predecessors, (93297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:48:14,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65145 states to 65145 states and 93297 transitions. [2023-12-02 12:48:14,291 INFO L78 Accepts]: Start accepts. Automaton has 65145 states and 93297 transitions. Word has length 90 [2023-12-02 12:48:14,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:48:14,292 INFO L495 AbstractCegarLoop]: Abstraction has 65145 states and 93297 transitions. [2023-12-02 12:48:14,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.6470588235294117) internal successors, (90), 33 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:48:14,292 INFO L276 IsEmpty]: Start isEmpty. Operand 65145 states and 93297 transitions. [2023-12-02 12:48:14,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-02 12:48:14,293 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:48:14,293 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:48:14,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2023-12-02 12:48:14,293 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:48:14,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:48:14,293 INFO L85 PathProgramCache]: Analyzing trace with hash 168160131, now seen corresponding path program 1 times [2023-12-02 12:48:14,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:48:14,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579766130] [2023-12-02 12:48:14,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:48:14,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:48:14,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:48:17,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:48:17,298 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:48:17,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579766130] [2023-12-02 12:48:17,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579766130] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:48:17,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:48:17,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2023-12-02 12:48:17,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109782087] [2023-12-02 12:48:17,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:48:17,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-02 12:48:17,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:48:17,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-02 12:48:17,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=745, Unknown=0, NotChecked=0, Total=870 [2023-12-02 12:48:17,299 INFO L87 Difference]: Start difference. First operand 65145 states and 93297 transitions. Second operand has 30 states, 30 states have (on average 3.0) internal successors, (90), 29 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:48:22,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:48:22,043 INFO L93 Difference]: Finished difference Result 76749 states and 109754 transitions. [2023-12-02 12:48:22,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-02 12:48:22,043 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.0) internal successors, (90), 29 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2023-12-02 12:48:22,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:48:22,115 INFO L225 Difference]: With dead ends: 76749 [2023-12-02 12:48:22,115 INFO L226 Difference]: Without dead ends: 76747 [2023-12-02 12:48:22,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=565, Invalid=2087, Unknown=0, NotChecked=0, Total=2652 [2023-12-02 12:48:22,131 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 1348 mSDsluCounter, 2169 mSDsCounter, 0 mSdLazyCounter, 3215 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1348 SdHoareTripleChecker+Valid, 2441 SdHoareTripleChecker+Invalid, 3226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 3215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-02 12:48:22,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1348 Valid, 2441 Invalid, 3226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 3215 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-02 12:48:22,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76747 states. [2023-12-02 12:48:22,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76747 to 65141. [2023-12-02 12:48:22,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65141 states, 65140 states have (on average 1.4321768498618361) internal successors, (93292), 65140 states have internal predecessors, (93292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:48:22,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65141 states to 65141 states and 93292 transitions. [2023-12-02 12:48:22,763 INFO L78 Accepts]: Start accepts. Automaton has 65141 states and 93292 transitions. Word has length 90 [2023-12-02 12:48:22,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:48:22,763 INFO L495 AbstractCegarLoop]: Abstraction has 65141 states and 93292 transitions. [2023-12-02 12:48:22,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.0) internal successors, (90), 29 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:48:22,763 INFO L276 IsEmpty]: Start isEmpty. Operand 65141 states and 93292 transitions. [2023-12-02 12:48:22,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-02 12:48:22,764 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:48:22,764 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:48:22,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2023-12-02 12:48:22,764 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:48:22,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:48:22,765 INFO L85 PathProgramCache]: Analyzing trace with hash -890207325, now seen corresponding path program 1 times [2023-12-02 12:48:22,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:48:22,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142023001] [2023-12-02 12:48:22,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:48:22,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:48:22,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:48:28,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:48:28,416 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:48:28,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142023001] [2023-12-02 12:48:28,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142023001] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:48:28,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:48:28,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2023-12-02 12:48:28,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334060740] [2023-12-02 12:48:28,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:48:28,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-02 12:48:28,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:48:28,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-02 12:48:28,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1128, Unknown=0, NotChecked=0, Total=1260 [2023-12-02 12:48:28,418 INFO L87 Difference]: Start difference. First operand 65141 states and 93292 transitions. Second operand has 36 states, 36 states have (on average 2.5) internal successors, (90), 35 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:48:36,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:48:36,072 INFO L93 Difference]: Finished difference Result 72369 states and 103547 transitions. [2023-12-02 12:48:36,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-02 12:48:36,073 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.5) internal successors, (90), 35 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2023-12-02 12:48:36,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:48:36,140 INFO L225 Difference]: With dead ends: 72369 [2023-12-02 12:48:36,140 INFO L226 Difference]: Without dead ends: 72367 [2023-12-02 12:48:36,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=808, Invalid=3098, Unknown=0, NotChecked=0, Total=3906 [2023-12-02 12:48:36,155 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 1858 mSDsluCounter, 4088 mSDsCounter, 0 mSdLazyCounter, 2912 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1858 SdHoareTripleChecker+Valid, 4481 SdHoareTripleChecker+Invalid, 2921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:48:36,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1858 Valid, 4481 Invalid, 2921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 2912 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-02 12:48:36,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72367 states. [2023-12-02 12:48:36,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72367 to 65141. [2023-12-02 12:48:36,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65141 states, 65140 states have (on average 1.4321768498618361) internal successors, (93292), 65140 states have internal predecessors, (93292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:48:36,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65141 states to 65141 states and 93292 transitions. [2023-12-02 12:48:36,770 INFO L78 Accepts]: Start accepts. Automaton has 65141 states and 93292 transitions. Word has length 90 [2023-12-02 12:48:36,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:48:36,770 INFO L495 AbstractCegarLoop]: Abstraction has 65141 states and 93292 transitions. [2023-12-02 12:48:36,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.5) internal successors, (90), 35 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:48:36,770 INFO L276 IsEmpty]: Start isEmpty. Operand 65141 states and 93292 transitions. [2023-12-02 12:48:36,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-02 12:48:36,771 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:48:36,771 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:48:36,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2023-12-02 12:48:36,772 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:48:36,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:48:36,772 INFO L85 PathProgramCache]: Analyzing trace with hash 326701859, now seen corresponding path program 1 times [2023-12-02 12:48:36,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:48:36,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33234716] [2023-12-02 12:48:36,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:48:36,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:48:36,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:48:44,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:48:44,468 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:48:44,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33234716] [2023-12-02 12:48:44,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33234716] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:48:44,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:48:44,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2023-12-02 12:48:44,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474943538] [2023-12-02 12:48:44,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:48:44,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-02 12:48:44,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:48:44,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-02 12:48:44,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1194, Unknown=0, NotChecked=0, Total=1332 [2023-12-02 12:48:44,469 INFO L87 Difference]: Start difference. First operand 65141 states and 93292 transitions. Second operand has 37 states, 37 states have (on average 2.4324324324324325) internal successors, (90), 36 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:48:59,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:48:59,751 INFO L93 Difference]: Finished difference Result 84720 states and 121463 transitions. [2023-12-02 12:48:59,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-02 12:48:59,752 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.4324324324324325) internal successors, (90), 36 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2023-12-02 12:48:59,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:48:59,830 INFO L225 Difference]: With dead ends: 84720 [2023-12-02 12:48:59,830 INFO L226 Difference]: Without dead ends: 76206 [2023-12-02 12:48:59,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=1080, Invalid=3476, Unknown=0, NotChecked=0, Total=4556 [2023-12-02 12:48:59,849 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 1641 mSDsluCounter, 3968 mSDsCounter, 0 mSdLazyCounter, 4975 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1641 SdHoareTripleChecker+Valid, 4403 SdHoareTripleChecker+Invalid, 4987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 4975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-12-02 12:48:59,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1641 Valid, 4403 Invalid, 4987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 4975 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-12-02 12:48:59,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76206 states. [2023-12-02 12:49:00,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76206 to 65130. [2023-12-02 12:49:00,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65130 states, 65129 states have (on average 1.432249842620031) internal successors, (93281), 65129 states have internal predecessors, (93281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:49:00,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65130 states to 65130 states and 93281 transitions. [2023-12-02 12:49:00,481 INFO L78 Accepts]: Start accepts. Automaton has 65130 states and 93281 transitions. Word has length 90 [2023-12-02 12:49:00,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:49:00,481 INFO L495 AbstractCegarLoop]: Abstraction has 65130 states and 93281 transitions. [2023-12-02 12:49:00,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.4324324324324325) internal successors, (90), 36 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:49:00,481 INFO L276 IsEmpty]: Start isEmpty. Operand 65130 states and 93281 transitions. [2023-12-02 12:49:00,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-02 12:49:00,482 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:49:00,482 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:49:00,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2023-12-02 12:49:00,483 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:49:00,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:49:00,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1214985027, now seen corresponding path program 1 times [2023-12-02 12:49:00,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:49:00,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928530234] [2023-12-02 12:49:00,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:49:00,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:49:00,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:49:03,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:49:03,387 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:49:03,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928530234] [2023-12-02 12:49:03,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928530234] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:49:03,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:49:03,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2023-12-02 12:49:03,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281781400] [2023-12-02 12:49:03,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:49:03,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-02 12:49:03,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:49:03,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-02 12:49:03,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=762, Unknown=0, NotChecked=0, Total=870 [2023-12-02 12:49:03,389 INFO L87 Difference]: Start difference. First operand 65130 states and 93281 transitions. Second operand has 30 states, 30 states have (on average 3.0) internal successors, (90), 29 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:49:09,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:49:09,204 INFO L93 Difference]: Finished difference Result 108013 states and 154708 transitions. [2023-12-02 12:49:09,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-02 12:49:09,205 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.0) internal successors, (90), 29 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2023-12-02 12:49:09,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:49:09,309 INFO L225 Difference]: With dead ends: 108013 [2023-12-02 12:49:09,309 INFO L226 Difference]: Without dead ends: 99179 [2023-12-02 12:49:09,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=716, Invalid=2590, Unknown=0, NotChecked=0, Total=3306 [2023-12-02 12:49:09,332 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 1404 mSDsluCounter, 4927 mSDsCounter, 0 mSdLazyCounter, 3250 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1404 SdHoareTripleChecker+Valid, 5335 SdHoareTripleChecker+Invalid, 3264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-02 12:49:09,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1404 Valid, 5335 Invalid, 3264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 3250 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-02 12:49:09,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99179 states. [2023-12-02 12:49:09,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99179 to 57437. [2023-12-02 12:49:09,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57437 states, 57436 states have (on average 1.4310711052301692) internal successors, (82195), 57436 states have internal predecessors, (82195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:49:10,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57437 states to 57437 states and 82195 transitions. [2023-12-02 12:49:10,011 INFO L78 Accepts]: Start accepts. Automaton has 57437 states and 82195 transitions. Word has length 90 [2023-12-02 12:49:10,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:49:10,011 INFO L495 AbstractCegarLoop]: Abstraction has 57437 states and 82195 transitions. [2023-12-02 12:49:10,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.0) internal successors, (90), 29 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:49:10,012 INFO L276 IsEmpty]: Start isEmpty. Operand 57437 states and 82195 transitions. [2023-12-02 12:49:10,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-02 12:49:10,013 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:49:10,013 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:49:10,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2023-12-02 12:49:10,013 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:49:10,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:49:10,013 INFO L85 PathProgramCache]: Analyzing trace with hash -253293725, now seen corresponding path program 1 times [2023-12-02 12:49:10,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:49:10,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798964844] [2023-12-02 12:49:10,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:49:10,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:49:10,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:49:15,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:49:15,871 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:49:15,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798964844] [2023-12-02 12:49:15,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798964844] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:49:15,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:49:15,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2023-12-02 12:49:15,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25139985] [2023-12-02 12:49:15,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:49:15,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-02 12:49:15,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:49:15,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-02 12:49:15,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1186, Unknown=0, NotChecked=0, Total=1332 [2023-12-02 12:49:15,873 INFO L87 Difference]: Start difference. First operand 57437 states and 82195 transitions. Second operand has 37 states, 37 states have (on average 2.4324324324324325) internal successors, (90), 36 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:49:28,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:49:28,637 INFO L93 Difference]: Finished difference Result 64718 states and 92506 transitions. [2023-12-02 12:49:28,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-02 12:49:28,638 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.4324324324324325) internal successors, (90), 36 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2023-12-02 12:49:28,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:49:28,700 INFO L225 Difference]: With dead ends: 64718 [2023-12-02 12:49:28,701 INFO L226 Difference]: Without dead ends: 64716 [2023-12-02 12:49:28,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=1352, Invalid=3904, Unknown=0, NotChecked=0, Total=5256 [2023-12-02 12:49:28,715 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 1761 mSDsluCounter, 4486 mSDsCounter, 0 mSdLazyCounter, 4280 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1761 SdHoareTripleChecker+Valid, 4907 SdHoareTripleChecker+Invalid, 4294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 4280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-12-02 12:49:28,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1761 Valid, 4907 Invalid, 4294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 4280 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-12-02 12:49:28,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64716 states. [2023-12-02 12:49:29,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64716 to 57433. [2023-12-02 12:49:29,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57433 states, 57432 states have (on average 1.4310837163950412) internal successors, (82190), 57432 states have internal predecessors, (82190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:49:29,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57433 states to 57433 states and 82190 transitions. [2023-12-02 12:49:29,263 INFO L78 Accepts]: Start accepts. Automaton has 57433 states and 82190 transitions. Word has length 90 [2023-12-02 12:49:29,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:49:29,263 INFO L495 AbstractCegarLoop]: Abstraction has 57433 states and 82190 transitions. [2023-12-02 12:49:29,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.4324324324324325) internal successors, (90), 36 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:49:29,263 INFO L276 IsEmpty]: Start isEmpty. Operand 57433 states and 82190 transitions. [2023-12-02 12:49:29,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-02 12:49:29,264 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:49:29,265 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:49:29,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2023-12-02 12:49:29,265 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:49:29,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:49:29,265 INFO L85 PathProgramCache]: Analyzing trace with hash 816394383, now seen corresponding path program 1 times [2023-12-02 12:49:29,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:49:29,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116638823] [2023-12-02 12:49:29,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:49:29,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:49:29,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:49:40,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:49:40,084 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:49:40,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116638823] [2023-12-02 12:49:40,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116638823] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:49:40,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:49:40,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2023-12-02 12:49:40,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025622365] [2023-12-02 12:49:40,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:49:40,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-02 12:49:40,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:49:40,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-02 12:49:40,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1478, Unknown=0, NotChecked=0, Total=1640 [2023-12-02 12:49:40,086 INFO L87 Difference]: Start difference. First operand 57433 states and 82190 transitions. Second operand has 41 states, 41 states have (on average 2.2439024390243905) internal successors, (92), 40 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:49:58,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:49:58,852 INFO L93 Difference]: Finished difference Result 64785 states and 92583 transitions. [2023-12-02 12:49:58,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-02 12:49:58,853 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.2439024390243905) internal successors, (92), 40 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2023-12-02 12:49:58,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:49:58,913 INFO L225 Difference]: With dead ends: 64785 [2023-12-02 12:49:58,914 INFO L226 Difference]: Without dead ends: 64783 [2023-12-02 12:49:58,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 989 ImplicationChecksByTransitivity, 16.5s TimeCoverageRelationStatistics Valid=1484, Invalid=4996, Unknown=0, NotChecked=0, Total=6480 [2023-12-02 12:49:58,927 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 1805 mSDsluCounter, 3583 mSDsCounter, 0 mSdLazyCounter, 5343 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1805 SdHoareTripleChecker+Valid, 3992 SdHoareTripleChecker+Invalid, 5354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 5343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-12-02 12:49:58,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1805 Valid, 3992 Invalid, 5354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 5343 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-12-02 12:49:58,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64783 states. [2023-12-02 12:49:59,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64783 to 61816. [2023-12-02 12:49:59,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61816 states, 61815 states have (on average 1.4300736067297581) internal successors, (88400), 61815 states have internal predecessors, (88400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:49:59,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61816 states to 61816 states and 88400 transitions. [2023-12-02 12:49:59,570 INFO L78 Accepts]: Start accepts. Automaton has 61816 states and 88400 transitions. Word has length 92 [2023-12-02 12:49:59,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:49:59,571 INFO L495 AbstractCegarLoop]: Abstraction has 61816 states and 88400 transitions. [2023-12-02 12:49:59,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.2439024390243905) internal successors, (92), 40 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:49:59,571 INFO L276 IsEmpty]: Start isEmpty. Operand 61816 states and 88400 transitions. [2023-12-02 12:49:59,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-02 12:49:59,572 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:49:59,572 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:49:59,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2023-12-02 12:49:59,572 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:49:59,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:49:59,573 INFO L85 PathProgramCache]: Analyzing trace with hash 354310255, now seen corresponding path program 1 times [2023-12-02 12:49:59,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:49:59,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809904175] [2023-12-02 12:49:59,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:49:59,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:49:59,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:50:09,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:50:09,510 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:50:09,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809904175] [2023-12-02 12:50:09,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809904175] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:50:09,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:50:09,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2023-12-02 12:50:09,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125735843] [2023-12-02 12:50:09,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:50:09,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-12-02 12:50:09,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:50:09,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-12-02 12:50:09,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1559, Unknown=0, NotChecked=0, Total=1722 [2023-12-02 12:50:09,512 INFO L87 Difference]: Start difference. First operand 61816 states and 88400 transitions. Second operand has 42 states, 42 states have (on average 2.1904761904761907) internal successors, (92), 41 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:50:32,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:50:32,536 INFO L93 Difference]: Finished difference Result 71735 states and 102443 transitions. [2023-12-02 12:50:32,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-02 12:50:32,536 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.1904761904761907) internal successors, (92), 41 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2023-12-02 12:50:32,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:50:32,604 INFO L225 Difference]: With dead ends: 71735 [2023-12-02 12:50:32,604 INFO L226 Difference]: Without dead ends: 71733 [2023-12-02 12:50:32,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1113 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=1604, Invalid=5536, Unknown=0, NotChecked=0, Total=7140 [2023-12-02 12:50:32,619 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 2085 mSDsluCounter, 6450 mSDsCounter, 0 mSdLazyCounter, 10402 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2085 SdHoareTripleChecker+Valid, 6947 SdHoareTripleChecker+Invalid, 10412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 10402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:50:32,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2085 Valid, 6947 Invalid, 10412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 10402 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2023-12-02 12:50:32,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71733 states. [2023-12-02 12:50:33,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71733 to 61816. [2023-12-02 12:50:33,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61816 states, 61815 states have (on average 1.4300736067297581) internal successors, (88400), 61815 states have internal predecessors, (88400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:50:33,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61816 states to 61816 states and 88400 transitions. [2023-12-02 12:50:33,337 INFO L78 Accepts]: Start accepts. Automaton has 61816 states and 88400 transitions. Word has length 92 [2023-12-02 12:50:33,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:50:33,338 INFO L495 AbstractCegarLoop]: Abstraction has 61816 states and 88400 transitions. [2023-12-02 12:50:33,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.1904761904761907) internal successors, (92), 41 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:50:33,338 INFO L276 IsEmpty]: Start isEmpty. Operand 61816 states and 88400 transitions. [2023-12-02 12:50:33,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-02 12:50:33,339 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:50:33,339 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:50:33,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2023-12-02 12:50:33,340 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:50:33,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:50:33,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1504460879, now seen corresponding path program 1 times [2023-12-02 12:50:33,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:50:33,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744553107] [2023-12-02 12:50:33,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:50:33,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:50:33,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:50:45,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:50:45,612 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:50:45,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744553107] [2023-12-02 12:50:45,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744553107] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:50:45,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:50:45,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2023-12-02 12:50:45,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588737376] [2023-12-02 12:50:45,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:50:45,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-02 12:50:45,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:50:45,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-02 12:50:45,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1635, Unknown=0, NotChecked=0, Total=1806 [2023-12-02 12:50:45,614 INFO L87 Difference]: Start difference. First operand 61816 states and 88400 transitions. Second operand has 43 states, 43 states have (on average 2.13953488372093) internal successors, (92), 42 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:51:05,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:51:05,683 INFO L93 Difference]: Finished difference Result 73472 states and 104915 transitions. [2023-12-02 12:51:05,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-02 12:51:05,684 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.13953488372093) internal successors, (92), 42 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2023-12-02 12:51:05,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:51:05,752 INFO L225 Difference]: With dead ends: 73472 [2023-12-02 12:51:05,753 INFO L226 Difference]: Without dead ends: 73470 [2023-12-02 12:51:05,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 777 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=1107, Invalid=4005, Unknown=0, NotChecked=0, Total=5112 [2023-12-02 12:51:05,768 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 1584 mSDsluCounter, 3798 mSDsCounter, 0 mSdLazyCounter, 5339 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1584 SdHoareTripleChecker+Valid, 4205 SdHoareTripleChecker+Invalid, 5344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 5339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2023-12-02 12:51:05,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1584 Valid, 4205 Invalid, 5344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 5339 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2023-12-02 12:51:05,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73470 states. [2023-12-02 12:51:06,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73470 to 61810. [2023-12-02 12:51:06,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61810 states, 61809 states have (on average 1.4300991764953324) internal successors, (88393), 61809 states have internal predecessors, (88393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:51:06,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61810 states to 61810 states and 88393 transitions. [2023-12-02 12:51:06,405 INFO L78 Accepts]: Start accepts. Automaton has 61810 states and 88393 transitions. Word has length 92 [2023-12-02 12:51:06,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:51:06,406 INFO L495 AbstractCegarLoop]: Abstraction has 61810 states and 88393 transitions. [2023-12-02 12:51:06,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.13953488372093) internal successors, (92), 42 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:51:06,406 INFO L276 IsEmpty]: Start isEmpty. Operand 61810 states and 88393 transitions. [2023-12-02 12:51:06,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-02 12:51:06,407 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:51:06,407 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:51:06,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2023-12-02 12:51:06,407 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:51:06,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:51:06,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1554090001, now seen corresponding path program 1 times [2023-12-02 12:51:06,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:51:06,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629133784] [2023-12-02 12:51:06,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:51:06,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:51:06,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:51:14,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:51:14,433 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:51:14,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629133784] [2023-12-02 12:51:14,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629133784] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:51:14,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:51:14,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2023-12-02 12:51:14,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346544457] [2023-12-02 12:51:14,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:51:14,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-02 12:51:14,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:51:14,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-02 12:51:14,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1400, Unknown=0, NotChecked=0, Total=1560 [2023-12-02 12:51:14,435 INFO L87 Difference]: Start difference. First operand 61810 states and 88393 transitions. Second operand has 40 states, 40 states have (on average 2.3) internal successors, (92), 39 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:51:30,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:51:30,281 INFO L93 Difference]: Finished difference Result 80541 states and 115099 transitions. [2023-12-02 12:51:30,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-02 12:51:30,282 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.3) internal successors, (92), 39 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2023-12-02 12:51:30,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:51:30,349 INFO L225 Difference]: With dead ends: 80541 [2023-12-02 12:51:30,350 INFO L226 Difference]: Without dead ends: 71707 [2023-12-02 12:51:30,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 766 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=1217, Invalid=4039, Unknown=0, NotChecked=0, Total=5256 [2023-12-02 12:51:30,367 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 1465 mSDsluCounter, 3628 mSDsCounter, 0 mSdLazyCounter, 5292 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1465 SdHoareTripleChecker+Valid, 4043 SdHoareTripleChecker+Invalid, 5303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 5292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-12-02 12:51:30,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1465 Valid, 4043 Invalid, 5303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 5292 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-12-02 12:51:30,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71707 states. [2023-12-02 12:51:30,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71707 to 61793. [2023-12-02 12:51:30,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61793 states, 61792 states have (on average 1.4302013205592956) internal successors, (88375), 61792 states have internal predecessors, (88375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:51:30,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61793 states to 61793 states and 88375 transitions. [2023-12-02 12:51:30,964 INFO L78 Accepts]: Start accepts. Automaton has 61793 states and 88375 transitions. Word has length 92 [2023-12-02 12:51:30,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:51:30,964 INFO L495 AbstractCegarLoop]: Abstraction has 61793 states and 88375 transitions. [2023-12-02 12:51:30,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.3) internal successors, (92), 39 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:51:30,964 INFO L276 IsEmpty]: Start isEmpty. Operand 61793 states and 88375 transitions. [2023-12-02 12:51:30,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-02 12:51:30,966 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:51:30,966 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:51:30,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2023-12-02 12:51:30,966 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:51:30,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:51:30,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1272598543, now seen corresponding path program 1 times [2023-12-02 12:51:30,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:51:30,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242274140] [2023-12-02 12:51:30,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:51:30,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:51:31,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:51:39,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:51:39,951 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:51:39,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242274140] [2023-12-02 12:51:39,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242274140] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:51:39,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:51:39,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2023-12-02 12:51:39,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389200332] [2023-12-02 12:51:39,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:51:39,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-12-02 12:51:39,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:51:39,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-12-02 12:51:39,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1569, Unknown=0, NotChecked=0, Total=1722 [2023-12-02 12:51:39,953 INFO L87 Difference]: Start difference. First operand 61793 states and 88375 transitions. Second operand has 42 states, 42 states have (on average 2.1904761904761907) internal successors, (92), 41 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:52:01,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:52:01,976 INFO L93 Difference]: Finished difference Result 96559 states and 137763 transitions. [2023-12-02 12:52:01,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-12-02 12:52:01,977 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.1904761904761907) internal successors, (92), 41 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2023-12-02 12:52:01,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:52:02,067 INFO L225 Difference]: With dead ends: 96559 [2023-12-02 12:52:02,067 INFO L226 Difference]: Without dead ends: 96557 [2023-12-02 12:52:02,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1085 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=1690, Invalid=5620, Unknown=0, NotChecked=0, Total=7310 [2023-12-02 12:52:02,087 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 1948 mSDsluCounter, 7824 mSDsCounter, 0 mSdLazyCounter, 6923 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1948 SdHoareTripleChecker+Valid, 8316 SdHoareTripleChecker+Invalid, 6940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 6923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-12-02 12:52:02,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1948 Valid, 8316 Invalid, 6940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 6923 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2023-12-02 12:52:02,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96557 states. [2023-12-02 12:52:02,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96557 to 61789. [2023-12-02 12:52:02,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61789 states, 61788 states have (on average 1.4302129863403896) internal successors, (88370), 61788 states have internal predecessors, (88370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:52:02,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61789 states to 61789 states and 88370 transitions. [2023-12-02 12:52:02,874 INFO L78 Accepts]: Start accepts. Automaton has 61789 states and 88370 transitions. Word has length 92 [2023-12-02 12:52:02,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:52:02,874 INFO L495 AbstractCegarLoop]: Abstraction has 61789 states and 88370 transitions. [2023-12-02 12:52:02,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.1904761904761907) internal successors, (92), 41 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:52:02,874 INFO L276 IsEmpty]: Start isEmpty. Operand 61789 states and 88370 transitions. [2023-12-02 12:52:02,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-02 12:52:02,876 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:52:02,876 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:52:02,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2023-12-02 12:52:02,876 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:52:02,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:52:02,881 INFO L85 PathProgramCache]: Analyzing trace with hash 214231087, now seen corresponding path program 1 times [2023-12-02 12:52:02,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:52:02,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031132296] [2023-12-02 12:52:02,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:52:02,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:52:02,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:52:10,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:52:10,876 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:52:10,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031132296] [2023-12-02 12:52:10,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031132296] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:52:10,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:52:10,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2023-12-02 12:52:10,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601974918] [2023-12-02 12:52:10,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:52:10,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-02 12:52:10,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:52:10,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-02 12:52:10,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1392, Unknown=0, NotChecked=0, Total=1560 [2023-12-02 12:52:10,877 INFO L87 Difference]: Start difference. First operand 61789 states and 88370 transitions. Second operand has 40 states, 40 states have (on average 2.3) internal successors, (92), 39 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:52:24,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:52:24,070 INFO L93 Difference]: Finished difference Result 69090 states and 98704 transitions. [2023-12-02 12:52:24,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-02 12:52:24,071 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.3) internal successors, (92), 39 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2023-12-02 12:52:24,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:52:24,136 INFO L225 Difference]: With dead ends: 69090 [2023-12-02 12:52:24,136 INFO L226 Difference]: Without dead ends: 69088 [2023-12-02 12:52:24,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 915 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=995, Invalid=3835, Unknown=0, NotChecked=0, Total=4830 [2023-12-02 12:52:24,151 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 1489 mSDsluCounter, 3085 mSDsCounter, 0 mSdLazyCounter, 5475 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 3340 SdHoareTripleChecker+Invalid, 5486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 5475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-12-02 12:52:24,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1489 Valid, 3340 Invalid, 5486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 5475 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-12-02 12:52:24,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69088 states. [2023-12-02 12:52:24,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69088 to 61785. [2023-12-02 12:52:24,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61785 states, 61784 states have (on average 1.4302246536320082) internal successors, (88365), 61784 states have internal predecessors, (88365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:52:24,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61785 states to 61785 states and 88365 transitions. [2023-12-02 12:52:24,808 INFO L78 Accepts]: Start accepts. Automaton has 61785 states and 88365 transitions. Word has length 92 [2023-12-02 12:52:24,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:52:24,809 INFO L495 AbstractCegarLoop]: Abstraction has 61785 states and 88365 transitions. [2023-12-02 12:52:24,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.3) internal successors, (92), 39 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:52:24,809 INFO L276 IsEmpty]: Start isEmpty. Operand 61785 states and 88365 transitions. [2023-12-02 12:52:24,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-02 12:52:24,810 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:52:24,810 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:52:24,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2023-12-02 12:52:24,811 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:52:24,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:52:24,815 INFO L85 PathProgramCache]: Analyzing trace with hash 2012852699, now seen corresponding path program 1 times [2023-12-02 12:52:24,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:52:24,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961056508] [2023-12-02 12:52:24,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:52:24,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:52:24,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:52:42,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:52:42,616 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:52:42,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961056508] [2023-12-02 12:52:42,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961056508] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:52:42,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:52:42,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2023-12-02 12:52:42,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338901620] [2023-12-02 12:52:42,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:52:42,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-12-02 12:52:42,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:52:42,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-12-02 12:52:42,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=2265, Unknown=0, NotChecked=0, Total=2450 [2023-12-02 12:52:42,618 INFO L87 Difference]: Start difference. First operand 61785 states and 88365 transitions. Second operand has 50 states, 50 states have (on average 1.88) internal successors, (94), 49 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:53:12,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:53:12,696 INFO L93 Difference]: Finished difference Result 69060 states and 98677 transitions. [2023-12-02 12:53:12,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-02 12:53:12,697 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.88) internal successors, (94), 49 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2023-12-02 12:53:12,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:53:12,767 INFO L225 Difference]: With dead ends: 69060 [2023-12-02 12:53:12,767 INFO L226 Difference]: Without dead ends: 69058 [2023-12-02 12:53:12,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1379 ImplicationChecksByTransitivity, 27.0s TimeCoverageRelationStatistics Valid=1765, Invalid=6977, Unknown=0, NotChecked=0, Total=8742 [2023-12-02 12:53:12,782 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 1947 mSDsluCounter, 3691 mSDsCounter, 0 mSdLazyCounter, 7645 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1947 SdHoareTripleChecker+Valid, 3931 SdHoareTripleChecker+Invalid, 7647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2023-12-02 12:53:12,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1947 Valid, 3931 Invalid, 7647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7645 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2023-12-02 12:53:12,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69058 states. [2023-12-02 12:53:13,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69058 to 61760. [2023-12-02 12:53:13,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61760 states, 61759 states have (on average 1.4303664243268188) internal successors, (88338), 61759 states have internal predecessors, (88338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:53:13,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61760 states to 61760 states and 88338 transitions. [2023-12-02 12:53:13,369 INFO L78 Accepts]: Start accepts. Automaton has 61760 states and 88338 transitions. Word has length 94 [2023-12-02 12:53:13,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:53:13,370 INFO L495 AbstractCegarLoop]: Abstraction has 61760 states and 88338 transitions. [2023-12-02 12:53:13,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.88) internal successors, (94), 49 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:53:13,370 INFO L276 IsEmpty]: Start isEmpty. Operand 61760 states and 88338 transitions. [2023-12-02 12:53:13,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-02 12:53:13,373 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:53:13,373 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:53:13,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2023-12-02 12:53:13,373 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:53:13,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:53:13,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1269935583, now seen corresponding path program 1 times [2023-12-02 12:53:13,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:53:13,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232986238] [2023-12-02 12:53:13,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:53:13,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:53:13,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:53:13,461 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:53:13,461 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:53:13,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232986238] [2023-12-02 12:53:13,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232986238] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:53:13,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:53:13,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 12:53:13,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351806521] [2023-12-02 12:53:13,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:53:13,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:53:13,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:53:13,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:53:13,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:53:13,462 INFO L87 Difference]: Start difference. First operand 61760 states and 88338 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:53:13,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:53:13,682 INFO L93 Difference]: Finished difference Result 93977 states and 135380 transitions. [2023-12-02 12:53:13,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:53:13,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2023-12-02 12:53:13,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:53:13,758 INFO L225 Difference]: With dead ends: 93977 [2023-12-02 12:53:13,758 INFO L226 Difference]: Without dead ends: 73303 [2023-12-02 12:53:13,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:53:13,779 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 118 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:53:13,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 507 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 12:53:13,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73303 states. [2023-12-02 12:53:14,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73303 to 70997. [2023-12-02 12:53:14,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70997 states, 70996 states have (on average 1.4308552594512367) internal successors, (101585), 70996 states have internal predecessors, (101585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:53:14,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70997 states to 70997 states and 101585 transitions. [2023-12-02 12:53:14,431 INFO L78 Accepts]: Start accepts. Automaton has 70997 states and 101585 transitions. Word has length 99 [2023-12-02 12:53:14,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:53:14,431 INFO L495 AbstractCegarLoop]: Abstraction has 70997 states and 101585 transitions. [2023-12-02 12:53:14,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:53:14,431 INFO L276 IsEmpty]: Start isEmpty. Operand 70997 states and 101585 transitions. [2023-12-02 12:53:14,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-02 12:53:14,434 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:53:14,434 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:53:14,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2023-12-02 12:53:14,435 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:53:14,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:53:14,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1109567257, now seen corresponding path program 1 times [2023-12-02 12:53:14,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:53:14,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779754145] [2023-12-02 12:53:14,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:53:14,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:53:14,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:53:14,526 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:53:14,526 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:53:14,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779754145] [2023-12-02 12:53:14,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779754145] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:53:14,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:53:14,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 12:53:14,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661815977] [2023-12-02 12:53:14,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:53:14,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:53:14,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:53:14,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:53:14,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:53:14,528 INFO L87 Difference]: Start difference. First operand 70997 states and 101585 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:53:14,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:53:14,805 INFO L93 Difference]: Finished difference Result 116997 states and 168539 transitions. [2023-12-02 12:53:14,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:53:14,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2023-12-02 12:53:14,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:53:15,044 INFO L225 Difference]: With dead ends: 116997 [2023-12-02 12:53:15,044 INFO L226 Difference]: Without dead ends: 87203 [2023-12-02 12:53:15,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:53:15,054 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 113 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:53:15,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 488 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 12:53:15,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87203 states. [2023-12-02 12:53:15,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87203 to 83973. [2023-12-02 12:53:15,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83973 states, 83972 states have (on average 1.4307745438955843) internal successors, (120145), 83972 states have internal predecessors, (120145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:53:15,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83973 states to 83973 states and 120145 transitions. [2023-12-02 12:53:15,801 INFO L78 Accepts]: Start accepts. Automaton has 83973 states and 120145 transitions. Word has length 102 [2023-12-02 12:53:15,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:53:15,801 INFO L495 AbstractCegarLoop]: Abstraction has 83973 states and 120145 transitions. [2023-12-02 12:53:15,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:53:15,801 INFO L276 IsEmpty]: Start isEmpty. Operand 83973 states and 120145 transitions. [2023-12-02 12:53:15,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-02 12:53:15,805 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:53:15,805 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:53:15,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2023-12-02 12:53:15,806 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:53:15,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:53:15,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1063677364, now seen corresponding path program 1 times [2023-12-02 12:53:15,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:53:15,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469593389] [2023-12-02 12:53:15,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:53:15,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:53:15,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:53:15,894 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:53:15,894 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:53:15,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469593389] [2023-12-02 12:53:15,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469593389] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:53:15,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:53:15,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 12:53:15,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444320329] [2023-12-02 12:53:15,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:53:15,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:53:15,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:53:15,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:53:15,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:53:15,896 INFO L87 Difference]: Start difference. First operand 83973 states and 120145 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:53:16,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:53:16,239 INFO L93 Difference]: Finished difference Result 150013 states and 215871 transitions. [2023-12-02 12:53:16,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:53:16,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2023-12-02 12:53:16,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:53:16,356 INFO L225 Difference]: With dead ends: 150013 [2023-12-02 12:53:16,356 INFO L226 Difference]: Without dead ends: 107499 [2023-12-02 12:53:16,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:53:16,389 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 108 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:53:16,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 469 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 12:53:16,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107499 states. [2023-12-02 12:53:17,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107499 to 102769. [2023-12-02 12:53:17,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102769 states, 102768 states have (on average 1.4289370231978826) internal successors, (146849), 102768 states have internal predecessors, (146849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:53:17,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102769 states to 102769 states and 146849 transitions. [2023-12-02 12:53:17,467 INFO L78 Accepts]: Start accepts. Automaton has 102769 states and 146849 transitions. Word has length 105 [2023-12-02 12:53:17,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:53:17,468 INFO L495 AbstractCegarLoop]: Abstraction has 102769 states and 146849 transitions. [2023-12-02 12:53:17,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:53:17,468 INFO L276 IsEmpty]: Start isEmpty. Operand 102769 states and 146849 transitions. [2023-12-02 12:53:17,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-02 12:53:17,471 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:53:17,472 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:53:17,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2023-12-02 12:53:17,472 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:53:17,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:53:17,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1827443982, now seen corresponding path program 1 times [2023-12-02 12:53:17,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:53:17,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809289677] [2023-12-02 12:53:17,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:53:17,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:53:17,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:53:17,556 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:53:17,557 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:53:17,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809289677] [2023-12-02 12:53:17,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809289677] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:53:17,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:53:17,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 12:53:17,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144575136] [2023-12-02 12:53:17,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:53:17,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:53:17,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:53:17,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:53:17,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:53:17,558 INFO L87 Difference]: Start difference. First operand 102769 states and 146849 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:53:18,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:53:18,027 INFO L93 Difference]: Finished difference Result 197913 states and 284113 transitions. [2023-12-02 12:53:18,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:53:18,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2023-12-02 12:53:18,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:53:18,178 INFO L225 Difference]: With dead ends: 197913 [2023-12-02 12:53:18,178 INFO L226 Difference]: Without dead ends: 137119 [2023-12-02 12:53:18,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:53:18,223 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 103 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:53:18,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 450 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 12:53:18,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137119 states. [2023-12-02 12:53:20,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137119 to 130149. [2023-12-02 12:53:20,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130149 states, 130148 states have (on average 1.4250161354765345) internal successors, (185463), 130148 states have internal predecessors, (185463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:53:20,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130149 states to 130149 states and 185463 transitions. [2023-12-02 12:53:20,337 INFO L78 Accepts]: Start accepts. Automaton has 130149 states and 185463 transitions. Word has length 108 [2023-12-02 12:53:20,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:53:20,337 INFO L495 AbstractCegarLoop]: Abstraction has 130149 states and 185463 transitions. [2023-12-02 12:53:20,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:53:20,337 INFO L276 IsEmpty]: Start isEmpty. Operand 130149 states and 185463 transitions. [2023-12-02 12:53:20,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-02 12:53:20,340 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:53:20,340 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:53:20,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2023-12-02 12:53:20,340 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:53:20,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:53:20,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1898687623, now seen corresponding path program 1 times [2023-12-02 12:53:20,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:53:20,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26262661] [2023-12-02 12:53:20,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:53:20,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:53:20,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:53:20,937 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:53:20,937 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:53:20,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26262661] [2023-12-02 12:53:20,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26262661] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:53:20,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:53:20,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 12:53:20,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370790452] [2023-12-02 12:53:20,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:53:20,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:53:20,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:53:20,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:53:20,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:53:20,939 INFO L87 Difference]: Start difference. First operand 130149 states and 185463 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:53:21,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:53:21,540 INFO L93 Difference]: Finished difference Result 289987 states and 414250 transitions. [2023-12-02 12:53:21,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:53:21,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2023-12-02 12:53:21,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:53:21,746 INFO L225 Difference]: With dead ends: 289987 [2023-12-02 12:53:21,746 INFO L226 Difference]: Without dead ends: 186701 [2023-12-02 12:53:21,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:53:21,810 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 98 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:53:21,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 431 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 12:53:21,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186701 states. [2023-12-02 12:53:23,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186701 to 175943. [2023-12-02 12:53:23,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175943 states, 175942 states have (on average 1.418501551647702) internal successors, (249574), 175942 states have internal predecessors, (249574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:53:24,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175943 states to 175943 states and 249574 transitions. [2023-12-02 12:53:24,031 INFO L78 Accepts]: Start accepts. Automaton has 175943 states and 249574 transitions. Word has length 111 [2023-12-02 12:53:24,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:53:24,031 INFO L495 AbstractCegarLoop]: Abstraction has 175943 states and 249574 transitions. [2023-12-02 12:53:24,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:53:24,031 INFO L276 IsEmpty]: Start isEmpty. Operand 175943 states and 249574 transitions. [2023-12-02 12:53:24,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-02 12:53:24,035 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:53:24,035 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:53:24,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2023-12-02 12:53:24,035 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:53:24,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:53:24,035 INFO L85 PathProgramCache]: Analyzing trace with hash -2010340920, now seen corresponding path program 1 times [2023-12-02 12:53:24,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:53:24,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865707762] [2023-12-02 12:53:24,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:53:24,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:53:24,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:53:24,121 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:53:24,121 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:53:24,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865707762] [2023-12-02 12:53:24,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865707762] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:53:24,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:53:24,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 12:53:24,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322661201] [2023-12-02 12:53:24,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:53:24,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:53:24,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:53:24,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:53:24,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:53:24,123 INFO L87 Difference]: Start difference. First operand 175943 states and 249574 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:53:25,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:53:25,316 INFO L93 Difference]: Finished difference Result 423750 states and 601888 transitions. [2023-12-02 12:53:25,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:53:25,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2023-12-02 12:53:25,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:53:25,614 INFO L225 Difference]: With dead ends: 423750 [2023-12-02 12:53:25,614 INFO L226 Difference]: Without dead ends: 260942 [2023-12-02 12:53:25,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:53:25,692 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 94 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:53:25,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 431 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 12:53:25,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260942 states. [2023-12-02 12:53:28,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260942 to 247250. [2023-12-02 12:53:28,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247250 states, 247249 states have (on average 1.4116295718081773) internal successors, (349024), 247249 states have internal predecessors, (349024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:53:28,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247250 states to 247250 states and 349024 transitions. [2023-12-02 12:53:28,930 INFO L78 Accepts]: Start accepts. Automaton has 247250 states and 349024 transitions. Word has length 114 [2023-12-02 12:53:28,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:53:28,931 INFO L495 AbstractCegarLoop]: Abstraction has 247250 states and 349024 transitions. [2023-12-02 12:53:28,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:53:28,931 INFO L276 IsEmpty]: Start isEmpty. Operand 247250 states and 349024 transitions. [2023-12-02 12:53:28,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-02 12:53:28,939 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:53:28,939 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:53:28,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2023-12-02 12:53:28,939 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:53:28,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:53:28,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1126740668, now seen corresponding path program 1 times [2023-12-02 12:53:28,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:53:28,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097677099] [2023-12-02 12:53:28,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:53:28,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:53:28,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:53:28,994 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:53:28,994 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:53:28,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097677099] [2023-12-02 12:53:28,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097677099] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:53:28,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:53:28,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 12:53:28,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620105859] [2023-12-02 12:53:28,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:53:28,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:53:28,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:53:28,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:53:28,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:53:28,995 INFO L87 Difference]: Start difference. First operand 247250 states and 349024 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:53:30,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:53:30,224 INFO L93 Difference]: Finished difference Result 436135 states and 614669 transitions. [2023-12-02 12:53:30,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:53:30,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2023-12-02 12:53:30,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:53:30,925 INFO L225 Difference]: With dead ends: 436135 [2023-12-02 12:53:30,925 INFO L226 Difference]: Without dead ends: 335155 [2023-12-02 12:53:30,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:53:30,994 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 96 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:53:30,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 455 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 12:53:31,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335155 states. [2023-12-02 12:53:34,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335155 to 335093. [2023-12-02 12:53:34,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335093 states, 335092 states have (on average 1.4041815382044334) internal successors, (470530), 335092 states have internal predecessors, (470530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:53:35,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335093 states to 335093 states and 470530 transitions. [2023-12-02 12:53:35,285 INFO L78 Accepts]: Start accepts. Automaton has 335093 states and 470530 transitions. Word has length 121 [2023-12-02 12:53:35,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:53:35,285 INFO L495 AbstractCegarLoop]: Abstraction has 335093 states and 470530 transitions. [2023-12-02 12:53:35,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:53:35,286 INFO L276 IsEmpty]: Start isEmpty. Operand 335093 states and 470530 transitions. [2023-12-02 12:53:35,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-02 12:53:35,293 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:53:35,293 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:53:35,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2023-12-02 12:53:35,293 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:53:35,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:53:35,294 INFO L85 PathProgramCache]: Analyzing trace with hash -2016639268, now seen corresponding path program 1 times [2023-12-02 12:53:35,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:53:35,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777495379] [2023-12-02 12:53:35,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:53:35,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:53:35,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:53:35,351 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:53:35,351 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:53:35,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777495379] [2023-12-02 12:53:35,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777495379] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:53:35,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:53:35,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 12:53:35,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561142650] [2023-12-02 12:53:35,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:53:35,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:53:35,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:53:35,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:53:35,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:53:35,352 INFO L87 Difference]: Start difference. First operand 335093 states and 470530 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:53:37,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:53:37,716 INFO L93 Difference]: Finished difference Result 757698 states and 1061006 transitions. [2023-12-02 12:53:37,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:53:37,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2023-12-02 12:53:37,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:53:38,398 INFO L225 Difference]: With dead ends: 757698 [2023-12-02 12:53:38,398 INFO L226 Difference]: Without dead ends: 521864 [2023-12-02 12:53:38,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:53:38,517 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 104 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:53:38,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 543 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 12:53:38,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521864 states. [2023-12-02 12:53:44,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521864 to 521862. [2023-12-02 12:53:44,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521862 states, 521861 states have (on average 1.3933384560256468) internal successors, (727129), 521861 states have internal predecessors, (727129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:53:45,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521862 states to 521862 states and 727129 transitions. [2023-12-02 12:53:45,811 INFO L78 Accepts]: Start accepts. Automaton has 521862 states and 727129 transitions. Word has length 121 [2023-12-02 12:53:45,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:53:45,811 INFO L495 AbstractCegarLoop]: Abstraction has 521862 states and 727129 transitions. [2023-12-02 12:53:45,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:53:45,812 INFO L276 IsEmpty]: Start isEmpty. Operand 521862 states and 727129 transitions. [2023-12-02 12:53:45,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-02 12:53:45,822 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:53:45,822 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:53:45,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2023-12-02 12:53:45,823 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:53:45,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:53:45,823 INFO L85 PathProgramCache]: Analyzing trace with hash -504002829, now seen corresponding path program 1 times [2023-12-02 12:53:45,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:53:45,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096107111] [2023-12-02 12:53:45,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:53:45,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:53:45,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:53:45,894 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 12:53:45,895 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:53:45,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096107111] [2023-12-02 12:53:45,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096107111] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:53:45,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:53:45,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 12:53:45,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813488704] [2023-12-02 12:53:45,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:53:45,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:53:45,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:53:45,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:53:45,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:53:45,896 INFO L87 Difference]: Start difference. First operand 521862 states and 727129 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:53:48,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:53:48,875 INFO L93 Difference]: Finished difference Result 967032 states and 1348504 transitions. [2023-12-02 12:53:48,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:53:48,875 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 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 123 [2023-12-02 12:53:48,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:53:49,439 INFO L225 Difference]: With dead ends: 967032 [2023-12-02 12:53:49,439 INFO L226 Difference]: Without dead ends: 447664 [2023-12-02 12:53:49,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:53:49,564 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 105 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:53:49,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 516 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 12:53:49,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447664 states.