./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_cd222aec-e967-4ff8-b0ae-a084064b2037/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd222aec-e967-4ff8-b0ae-a084064b2037/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd222aec-e967-4ff8-b0ae-a084064b2037/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd222aec-e967-4ff8-b0ae-a084064b2037/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd222aec-e967-4ff8-b0ae-a084064b2037/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd222aec-e967-4ff8-b0ae-a084064b2037/bin/utaipan-g80aRyZoba --witnessprinter.witness.filename witness.graphml --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 0ffe39e5069596e29b504492c7e6b50a86ab43c69c1a6acd2a45f3ed316ecfd7 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 01:38:23,805 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:38:23,808 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:38:23,848 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:38:23,849 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:38:23,853 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:38:23,856 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:38:23,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:38:23,862 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:38:23,867 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:38:23,869 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:38:23,872 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:38:23,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:38:23,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:38:23,876 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:38:23,880 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:38:23,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:38:23,883 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:38:23,885 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:38:23,891 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:38:23,893 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:38:23,895 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:38:23,897 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:38:23,897 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:38:23,907 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:38:23,908 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:38:23,908 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:38:23,910 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:38:23,911 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:38:23,912 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:38:23,912 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:38:23,913 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:38:23,915 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:38:23,917 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:38:23,919 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:38:23,919 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:38:23,920 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:38:23,920 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:38:23,921 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:38:23,922 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:38:23,923 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:38:23,924 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd222aec-e967-4ff8-b0ae-a084064b2037/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 01:38:23,967 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:38:23,967 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:38:23,968 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:38:23,968 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:38:23,969 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:38:23,969 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:38:23,970 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:38:23,970 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:38:23,970 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:38:23,970 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:38:23,971 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:38:23,972 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:38:23,972 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:38:23,972 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:38:23,972 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:38:23,973 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:38:23,973 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:38:23,973 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:38:23,974 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:38:23,974 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 01:38:23,974 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:38:23,975 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 01:38:23,975 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:38:23,975 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:38:23,975 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:38:23,976 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:38:23,976 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 01:38:23,976 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:38:23,977 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:38:23,977 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:38:23,977 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:38:23,978 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:38:23,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:38:23,978 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:38:23,978 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:38:23,979 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:38:23,979 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:38:23,979 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:38:23,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:38:23,980 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:38:23,980 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:38:23,980 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd222aec-e967-4ff8-b0ae-a084064b2037/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd222aec-e967-4ff8-b0ae-a084064b2037/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ffe39e5069596e29b504492c7e6b50a86ab43c69c1a6acd2a45f3ed316ecfd7 [2022-11-22 01:38:24,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:38:24,347 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:38:24,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:38:24,351 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:38:24,351 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:38:24,353 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd222aec-e967-4ff8-b0ae-a084064b2037/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2022-11-22 01:38:27,453 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:38:27,699 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:38:27,700 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd222aec-e967-4ff8-b0ae-a084064b2037/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2022-11-22 01:38:27,715 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd222aec-e967-4ff8-b0ae-a084064b2037/bin/utaipan-g80aRyZoba/data/1a90a536f/87c03a4224ec4843b0903a991fed60aa/FLAG4fccf9afa [2022-11-22 01:38:27,734 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd222aec-e967-4ff8-b0ae-a084064b2037/bin/utaipan-g80aRyZoba/data/1a90a536f/87c03a4224ec4843b0903a991fed60aa [2022-11-22 01:38:27,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:38:27,739 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:38:27,743 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:38:27,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:38:27,748 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:38:27,749 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:38:27" (1/1) ... [2022-11-22 01:38:27,750 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37da559d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:38:27, skipping insertion in model container [2022-11-22 01:38:27,751 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:38:27" (1/1) ... [2022-11-22 01:38:27,759 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:38:27,823 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:38:28,180 WARN L237 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_cd222aec-e967-4ff8-b0ae-a084064b2037/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[15966,15979] [2022-11-22 01:38:28,296 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:38:28,316 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:38:28,495 WARN L237 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_cd222aec-e967-4ff8-b0ae-a084064b2037/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[15966,15979] [2022-11-22 01:38:28,658 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:38:28,675 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:38:28,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:38:28 WrapperNode [2022-11-22 01:38:28,676 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:38:28,677 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:38:28,677 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:38:28,677 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:38:28,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:38:28" (1/1) ... [2022-11-22 01:38:28,712 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:38:28" (1/1) ... [2022-11-22 01:38:28,807 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1294 [2022-11-22 01:38:28,807 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:38:28,808 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:38:28,808 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:38:28,809 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:38:28,818 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:38:28" (1/1) ... [2022-11-22 01:38:28,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:38:28" (1/1) ... [2022-11-22 01:38:28,824 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:38:28" (1/1) ... [2022-11-22 01:38:28,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:38:28" (1/1) ... [2022-11-22 01:38:28,867 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:38:28" (1/1) ... [2022-11-22 01:38:28,881 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:38:28" (1/1) ... [2022-11-22 01:38:28,884 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:38:28" (1/1) ... [2022-11-22 01:38:28,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:38:28" (1/1) ... [2022-11-22 01:38:28,909 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:38:28,910 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:38:28,910 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:38:28,910 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:38:28,926 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:38:28" (1/1) ... [2022-11-22 01:38:28,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:38:28,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd222aec-e967-4ff8-b0ae-a084064b2037/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:38:28,963 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd222aec-e967-4ff8-b0ae-a084064b2037/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:38:28,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd222aec-e967-4ff8-b0ae-a084064b2037/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:38:29,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:38:29,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:38:29,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:38:29,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:38:29,215 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:38:29,217 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:38:30,245 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:38:30,632 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:38:30,633 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-22 01:38:30,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:38:30 BoogieIcfgContainer [2022-11-22 01:38:30,637 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:38:30,639 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:38:30,640 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:38:30,643 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:38:30,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:38:27" (1/3) ... [2022-11-22 01:38:30,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3658cf6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:38:30, skipping insertion in model container [2022-11-22 01:38:30,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:38:28" (2/3) ... [2022-11-22 01:38:30,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3658cf6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:38:30, skipping insertion in model container [2022-11-22 01:38:30,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:38:30" (3/3) ... [2022-11-22 01:38:30,650 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2022-11-22 01:38:30,671 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:38:30,671 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 01:38:30,752 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:38:30,760 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=LoopsAndPotentialCycles, 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;@3c84e82d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:38:30,761 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 01:38:30,767 INFO L276 IsEmpty]: Start isEmpty. Operand has 249 states, 247 states have (on average 1.777327935222672) internal successors, (439), 248 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:38:30,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-22 01:38:30,786 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:38:30,787 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:38:30,788 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:38:30,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:38:30,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1108360375, now seen corresponding path program 1 times [2022-11-22 01:38:30,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:38:30,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663471034] [2022-11-22 01:38:30,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:38:30,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:38:31,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:38:32,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:38:32,588 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:38:32,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663471034] [2022-11-22 01:38:32,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663471034] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:38:32,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:38:32,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:38:32,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330682739] [2022-11-22 01:38:32,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:38:32,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:38:32,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:38:32,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:38:32,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:38:32,643 INFO L87 Difference]: Start difference. First operand has 249 states, 247 states have (on average 1.777327935222672) internal successors, (439), 248 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:38:32,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:38:32,968 INFO L93 Difference]: Finished difference Result 616 states and 1076 transitions. [2022-11-22 01:38:32,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:38:32,971 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-11-22 01:38:32,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:38:32,983 INFO L225 Difference]: With dead ends: 616 [2022-11-22 01:38:32,983 INFO L226 Difference]: Without dead ends: 438 [2022-11-22 01:38:32,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:38:32,991 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 1101 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1101 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:38:32,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1101 Valid, 796 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:38:33,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2022-11-22 01:38:33,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 436. [2022-11-22 01:38:33,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 435 states have (on average 1.3908045977011494) internal successors, (605), 435 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:38:33,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 605 transitions. [2022-11-22 01:38:33,123 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 605 transitions. Word has length 116 [2022-11-22 01:38:33,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:38:33,124 INFO L495 AbstractCegarLoop]: Abstraction has 436 states and 605 transitions. [2022-11-22 01:38:33,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:38:33,124 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 605 transitions. [2022-11-22 01:38:33,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-22 01:38:33,133 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:38:33,134 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:38:33,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:38:33,135 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:38:33,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:38:33,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1634265249, now seen corresponding path program 1 times [2022-11-22 01:38:33,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:38:33,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734478381] [2022-11-22 01:38:33,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:38:33,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:38:33,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:38:33,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:38:33,277 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:38:33,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734478381] [2022-11-22 01:38:33,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734478381] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:38:33,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:38:33,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:38:33,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448887637] [2022-11-22 01:38:33,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:38:33,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:38:33,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:38:33,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:38:33,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:38:33,282 INFO L87 Difference]: Start difference. First operand 436 states and 605 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:38:33,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:38:33,458 INFO L93 Difference]: Finished difference Result 921 states and 1296 transitions. [2022-11-22 01:38:33,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:38:33,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2022-11-22 01:38:33,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:38:33,462 INFO L225 Difference]: With dead ends: 921 [2022-11-22 01:38:33,462 INFO L226 Difference]: Without dead ends: 586 [2022-11-22 01:38:33,465 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 [2022-11-22 01:38:33,466 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 200 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:38:33,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 626 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:38:33,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2022-11-22 01:38:33,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 548. [2022-11-22 01:38:33,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 547 states have (on average 1.43327239488117) internal successors, (784), 547 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:38:33,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 784 transitions. [2022-11-22 01:38:33,549 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 784 transitions. Word has length 118 [2022-11-22 01:38:33,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:38:33,550 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 784 transitions. [2022-11-22 01:38:33,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:38:33,550 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 784 transitions. [2022-11-22 01:38:33,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-22 01:38:33,552 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:38:33,552 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:38:33,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:38:33,552 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:38:33,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:38:33,553 INFO L85 PathProgramCache]: Analyzing trace with hash 974330824, now seen corresponding path program 1 times [2022-11-22 01:38:33,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:38:33,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746177040] [2022-11-22 01:38:33,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:38:33,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:38:33,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:38:33,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:38:33,658 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:38:33,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746177040] [2022-11-22 01:38:33,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746177040] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:38:33,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:38:33,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:38:33,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000681185] [2022-11-22 01:38:33,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:38:33,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:38:33,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:38:33,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:38:33,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:38:33,661 INFO L87 Difference]: Start difference. First operand 548 states and 784 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:38:33,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:38:33,864 INFO L93 Difference]: Finished difference Result 1339 states and 1966 transitions. [2022-11-22 01:38:33,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:38:33,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2022-11-22 01:38:33,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:38:33,868 INFO L225 Difference]: With dead ends: 1339 [2022-11-22 01:38:33,869 INFO L226 Difference]: Without dead ends: 838 [2022-11-22 01:38:33,870 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 [2022-11-22 01:38:33,871 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 247 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:38:33,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 670 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:38:33,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2022-11-22 01:38:33,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 750. [2022-11-22 01:38:33,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 749 states have (on average 1.479305740987984) internal successors, (1108), 749 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:38:33,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 1108 transitions. [2022-11-22 01:38:33,977 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 1108 transitions. Word has length 118 [2022-11-22 01:38:33,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:38:33,978 INFO L495 AbstractCegarLoop]: Abstraction has 750 states and 1108 transitions. [2022-11-22 01:38:33,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:38:33,978 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 1108 transitions. [2022-11-22 01:38:33,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-22 01:38:33,980 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:38:33,980 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:38:33,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 01:38:33,981 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:38:33,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:38:33,981 INFO L85 PathProgramCache]: Analyzing trace with hash 2009090797, now seen corresponding path program 1 times [2022-11-22 01:38:33,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:38:33,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670817057] [2022-11-22 01:38:33,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:38:33,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:38:34,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:38:34,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:38:34,248 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:38:34,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670817057] [2022-11-22 01:38:34,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670817057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:38:34,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:38:34,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:38:34,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17108219] [2022-11-22 01:38:34,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:38:34,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:38:34,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:38:34,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:38:34,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:38:34,251 INFO L87 Difference]: Start difference. First operand 750 states and 1108 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 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) [2022-11-22 01:38:34,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:38:34,534 INFO L93 Difference]: Finished difference Result 1403 states and 2088 transitions. [2022-11-22 01:38:34,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:38:34,535 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 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 [2022-11-22 01:38:34,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:38:34,538 INFO L225 Difference]: With dead ends: 1403 [2022-11-22 01:38:34,538 INFO L226 Difference]: Without dead ends: 750 [2022-11-22 01:38:34,539 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 [2022-11-22 01:38:34,541 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 912 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:38:34,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [912 Valid, 262 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:38:34,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2022-11-22 01:38:34,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 750. [2022-11-22 01:38:34,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 749 states have (on average 1.4632843791722296) internal successors, (1096), 749 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:38:34,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 1096 transitions. [2022-11-22 01:38:34,675 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 1096 transitions. Word has length 121 [2022-11-22 01:38:34,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:38:34,676 INFO L495 AbstractCegarLoop]: Abstraction has 750 states and 1096 transitions. [2022-11-22 01:38:34,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 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) [2022-11-22 01:38:34,676 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 1096 transitions. [2022-11-22 01:38:34,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-22 01:38:34,681 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:38:34,681 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:38:34,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 01:38:34,682 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:38:34,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:38:34,683 INFO L85 PathProgramCache]: Analyzing trace with hash 370744200, now seen corresponding path program 1 times [2022-11-22 01:38:34,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:38:34,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117115214] [2022-11-22 01:38:34,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:38:34,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:38:34,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:38:35,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:38:35,643 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:38:35,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117115214] [2022-11-22 01:38:35,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117115214] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:38:35,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:38:35,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:38:35,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744678350] [2022-11-22 01:38:35,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:38:35,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:38:35,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:38:35,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:38:35,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:38:35,648 INFO L87 Difference]: Start difference. First operand 750 states and 1096 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 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) [2022-11-22 01:38:36,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:38:36,116 INFO L93 Difference]: Finished difference Result 2054 states and 3022 transitions. [2022-11-22 01:38:36,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:38:36,117 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 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 [2022-11-22 01:38:36,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:38:36,122 INFO L225 Difference]: With dead ends: 2054 [2022-11-22 01:38:36,122 INFO L226 Difference]: Without dead ends: 1387 [2022-11-22 01:38:36,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:38:36,127 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 1378 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1378 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:38:36,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1378 Valid, 582 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:38:36,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1387 states. [2022-11-22 01:38:36,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1387 to 1385. [2022-11-22 01:38:36,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1385 states, 1384 states have (on average 1.4602601156069364) internal successors, (2021), 1384 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:38:36,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1385 states to 1385 states and 2021 transitions. [2022-11-22 01:38:36,407 INFO L78 Accepts]: Start accepts. Automaton has 1385 states and 2021 transitions. Word has length 121 [2022-11-22 01:38:36,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:38:36,409 INFO L495 AbstractCegarLoop]: Abstraction has 1385 states and 2021 transitions. [2022-11-22 01:38:36,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 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) [2022-11-22 01:38:36,409 INFO L276 IsEmpty]: Start isEmpty. Operand 1385 states and 2021 transitions. [2022-11-22 01:38:36,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-22 01:38:36,416 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:38:36,416 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:38:36,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 01:38:36,417 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:38:36,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:38:36,418 INFO L85 PathProgramCache]: Analyzing trace with hash 358492424, now seen corresponding path program 1 times [2022-11-22 01:38:36,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:38:36,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054687824] [2022-11-22 01:38:36,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:38:36,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:38:36,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:38:36,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:38:36,508 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:38:36,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054687824] [2022-11-22 01:38:36,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054687824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:38:36,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:38:36,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:38:36,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259479970] [2022-11-22 01:38:36,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:38:36,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:38:36,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:38:36,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:38:36,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:38:36,512 INFO L87 Difference]: Start difference. First operand 1385 states and 2021 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:38:37,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:38:37,203 INFO L93 Difference]: Finished difference Result 3529 states and 5247 transitions. [2022-11-22 01:38:37,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:38:37,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 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 [2022-11-22 01:38:37,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:38:37,212 INFO L225 Difference]: With dead ends: 3529 [2022-11-22 01:38:37,212 INFO L226 Difference]: Without dead ends: 2233 [2022-11-22 01:38:37,214 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 [2022-11-22 01:38:37,215 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 214 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:38:37,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 631 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:38:37,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2233 states. [2022-11-22 01:38:37,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2233 to 2111. [2022-11-22 01:38:37,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2111 states, 2110 states have (on average 1.500947867298578) internal successors, (3167), 2110 states have internal predecessors, (3167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:38:37,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2111 states to 2111 states and 3167 transitions. [2022-11-22 01:38:37,711 INFO L78 Accepts]: Start accepts. Automaton has 2111 states and 3167 transitions. Word has length 123 [2022-11-22 01:38:37,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:38:37,713 INFO L495 AbstractCegarLoop]: Abstraction has 2111 states and 3167 transitions. [2022-11-22 01:38:37,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:38:37,713 INFO L276 IsEmpty]: Start isEmpty. Operand 2111 states and 3167 transitions. [2022-11-22 01:38:37,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-22 01:38:37,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:38:37,716 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:38:37,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 01:38:37,716 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:38:37,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:38:37,717 INFO L85 PathProgramCache]: Analyzing trace with hash 280777176, now seen corresponding path program 1 times [2022-11-22 01:38:37,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:38:37,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504641461] [2022-11-22 01:38:37,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:38:37,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:38:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:38:37,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:38:37,971 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:38:37,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504641461] [2022-11-22 01:38:37,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504641461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:38:37,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:38:37,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:38:37,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705446058] [2022-11-22 01:38:37,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:38:37,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:38:37,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:38:37,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:38:37,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:38:37,974 INFO L87 Difference]: Start difference. First operand 2111 states and 3167 transitions. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:38:38,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:38:38,671 INFO L93 Difference]: Finished difference Result 4141 states and 6232 transitions. [2022-11-22 01:38:38,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:38:38,671 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2022-11-22 01:38:38,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:38:38,679 INFO L225 Difference]: With dead ends: 4141 [2022-11-22 01:38:38,679 INFO L226 Difference]: Without dead ends: 2111 [2022-11-22 01:38:38,684 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 [2022-11-22 01:38:38,687 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 895 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:38:38,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [895 Valid, 258 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:38:38,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2111 states. [2022-11-22 01:38:39,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2111 to 2111. [2022-11-22 01:38:39,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2111 states, 2110 states have (on average 1.4838862559241706) internal successors, (3131), 2110 states have internal predecessors, (3131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:38:39,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2111 states to 2111 states and 3131 transitions. [2022-11-22 01:38:39,218 INFO L78 Accepts]: Start accepts. Automaton has 2111 states and 3131 transitions. Word has length 126 [2022-11-22 01:38:39,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:38:39,218 INFO L495 AbstractCegarLoop]: Abstraction has 2111 states and 3131 transitions. [2022-11-22 01:38:39,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:38:39,219 INFO L276 IsEmpty]: Start isEmpty. Operand 2111 states and 3131 transitions. [2022-11-22 01:38:39,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-22 01:38:39,221 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:38:39,222 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:38:39,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 01:38:39,222 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:38:39,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:38:39,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1879035821, now seen corresponding path program 1 times [2022-11-22 01:38:39,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:38:39,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559532532] [2022-11-22 01:38:39,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:38:39,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:38:39,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:38:40,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:38:40,084 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:38:40,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559532532] [2022-11-22 01:38:40,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559532532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:38:40,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:38:40,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:38:40,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079334360] [2022-11-22 01:38:40,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:38:40,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:38:40,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:38:40,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:38:40,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:38:40,088 INFO L87 Difference]: Start difference. First operand 2111 states and 3131 transitions. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:38:41,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:38:41,084 INFO L93 Difference]: Finished difference Result 5615 states and 8367 transitions. [2022-11-22 01:38:41,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:38:41,085 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2022-11-22 01:38:41,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:38:41,100 INFO L225 Difference]: With dead ends: 5615 [2022-11-22 01:38:41,100 INFO L226 Difference]: Without dead ends: 3643 [2022-11-22 01:38:41,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:38:41,105 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 586 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:38:41,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [586 Valid, 751 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:38:41,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3643 states. [2022-11-22 01:38:41,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3643 to 3641. [2022-11-22 01:38:42,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3641 states, 3640 states have (on average 1.4733516483516484) internal successors, (5363), 3640 states have internal predecessors, (5363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:38:42,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3641 states to 3641 states and 5363 transitions. [2022-11-22 01:38:42,011 INFO L78 Accepts]: Start accepts. Automaton has 3641 states and 5363 transitions. Word has length 126 [2022-11-22 01:38:42,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:38:42,012 INFO L495 AbstractCegarLoop]: Abstraction has 3641 states and 5363 transitions. [2022-11-22 01:38:42,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:38:42,012 INFO L276 IsEmpty]: Start isEmpty. Operand 3641 states and 5363 transitions. [2022-11-22 01:38:42,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-22 01:38:42,015 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:38:42,016 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:38:42,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 01:38:42,016 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:38:42,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:38:42,017 INFO L85 PathProgramCache]: Analyzing trace with hash 376216476, now seen corresponding path program 1 times [2022-11-22 01:38:42,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:38:42,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341338070] [2022-11-22 01:38:42,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:38:42,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:38:42,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:38:43,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:38:43,012 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:38:43,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341338070] [2022-11-22 01:38:43,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341338070] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:38:43,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:38:43,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:38:43,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164070564] [2022-11-22 01:38:43,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:38:43,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:38:43,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:38:43,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:38:43,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:38:43,016 INFO L87 Difference]: Start difference. First operand 3641 states and 5363 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:38:44,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:38:44,467 INFO L93 Difference]: Finished difference Result 7063 states and 10407 transitions. [2022-11-22 01:38:44,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:38:44,468 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2022-11-22 01:38:44,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:38:44,485 INFO L225 Difference]: With dead ends: 7063 [2022-11-22 01:38:44,485 INFO L226 Difference]: Without dead ends: 5334 [2022-11-22 01:38:44,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:38:44,491 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 1361 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1361 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:38:44,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1361 Valid, 567 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:38:44,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5334 states. [2022-11-22 01:38:45,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5334 to 5332. [2022-11-22 01:38:45,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5332 states, 5331 states have (on average 1.4582629900581505) internal successors, (7774), 5331 states have internal predecessors, (7774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:38:45,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5332 states to 5332 states and 7774 transitions. [2022-11-22 01:38:45,645 INFO L78 Accepts]: Start accepts. Automaton has 5332 states and 7774 transitions. Word has length 131 [2022-11-22 01:38:45,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:38:45,646 INFO L495 AbstractCegarLoop]: Abstraction has 5332 states and 7774 transitions. [2022-11-22 01:38:45,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:38:45,646 INFO L276 IsEmpty]: Start isEmpty. Operand 5332 states and 7774 transitions. [2022-11-22 01:38:45,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-22 01:38:45,650 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:38:45,650 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:38:45,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 01:38:45,651 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:38:45,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:38:45,652 INFO L85 PathProgramCache]: Analyzing trace with hash 2032930890, now seen corresponding path program 1 times [2022-11-22 01:38:45,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:38:45,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578175427] [2022-11-22 01:38:45,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:38:45,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:38:45,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:38:52,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:38:52,536 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:38:52,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578175427] [2022-11-22 01:38:52,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578175427] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:38:52,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:38:52,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-22 01:38:52,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643204836] [2022-11-22 01:38:52,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:38:52,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-22 01:38:52,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:38:52,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-22 01:38:52,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2022-11-22 01:38:52,539 INFO L87 Difference]: Start difference. First operand 5332 states and 7774 transitions. Second operand has 27 states, 27 states have (on average 4.851851851851852) internal successors, (131), 26 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:04,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:39:04,438 INFO L93 Difference]: Finished difference Result 7733 states and 11129 transitions. [2022-11-22 01:39:04,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-22 01:39:04,439 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.851851851851852) internal successors, (131), 26 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2022-11-22 01:39:04,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:39:04,463 INFO L225 Difference]: With dead ends: 7733 [2022-11-22 01:39:04,463 INFO L226 Difference]: Without dead ends: 6063 [2022-11-22 01:39:04,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=411, Invalid=1481, Unknown=0, NotChecked=0, Total=1892 [2022-11-22 01:39:04,469 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 1964 mSDsluCounter, 4281 mSDsCounter, 0 mSdLazyCounter, 2082 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1964 SdHoareTripleChecker+Valid, 4602 SdHoareTripleChecker+Invalid, 2085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:39:04,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1964 Valid, 4602 Invalid, 2085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2082 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-22 01:39:04,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6063 states. [2022-11-22 01:39:05,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6063 to 5425. [2022-11-22 01:39:05,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5425 states, 5424 states have (on average 1.4540929203539823) internal successors, (7887), 5424 states have internal predecessors, (7887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:05,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5425 states to 5425 states and 7887 transitions. [2022-11-22 01:39:05,745 INFO L78 Accepts]: Start accepts. Automaton has 5425 states and 7887 transitions. Word has length 131 [2022-11-22 01:39:05,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:39:05,746 INFO L495 AbstractCegarLoop]: Abstraction has 5425 states and 7887 transitions. [2022-11-22 01:39:05,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.851851851851852) internal successors, (131), 26 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:05,746 INFO L276 IsEmpty]: Start isEmpty. Operand 5425 states and 7887 transitions. [2022-11-22 01:39:05,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-22 01:39:05,750 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:39:05,750 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:39:05,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 01:39:05,750 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:39:05,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:39:05,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1365594929, now seen corresponding path program 1 times [2022-11-22 01:39:05,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:39:05,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47897343] [2022-11-22 01:39:05,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:39:05,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:39:05,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:39:05,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:39:05,867 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:39:05,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47897343] [2022-11-22 01:39:05,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47897343] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:39:05,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:39:05,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:39:05,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409883757] [2022-11-22 01:39:05,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:39:05,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:39:05,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:39:05,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:39:05,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:39:05,869 INFO L87 Difference]: Start difference. First operand 5425 states and 7887 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:07,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:39:07,254 INFO L93 Difference]: Finished difference Result 10417 states and 15282 transitions. [2022-11-22 01:39:07,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:39:07,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2022-11-22 01:39:07,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:39:07,282 INFO L225 Difference]: With dead ends: 10417 [2022-11-22 01:39:07,282 INFO L226 Difference]: Without dead ends: 7838 [2022-11-22 01:39:07,287 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 [2022-11-22 01:39:07,288 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 207 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:39:07,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 725 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:39:07,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7838 states. [2022-11-22 01:39:08,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7838 to 7836. [2022-11-22 01:39:08,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7836 states, 7835 states have (on average 1.4430121250797703) internal successors, (11306), 7835 states have internal predecessors, (11306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:08,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7836 states to 7836 states and 11306 transitions. [2022-11-22 01:39:08,826 INFO L78 Accepts]: Start accepts. Automaton has 7836 states and 11306 transitions. Word has length 131 [2022-11-22 01:39:08,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:39:08,827 INFO L495 AbstractCegarLoop]: Abstraction has 7836 states and 11306 transitions. [2022-11-22 01:39:08,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:08,827 INFO L276 IsEmpty]: Start isEmpty. Operand 7836 states and 11306 transitions. [2022-11-22 01:39:08,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-22 01:39:08,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:39:08,833 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:39:08,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-22 01:39:08,833 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:39:08,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:39:08,834 INFO L85 PathProgramCache]: Analyzing trace with hash 155096622, now seen corresponding path program 1 times [2022-11-22 01:39:08,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:39:08,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447692439] [2022-11-22 01:39:08,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:39:08,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:39:08,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:39:09,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:39:09,680 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:39:09,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447692439] [2022-11-22 01:39:09,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447692439] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:39:09,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:39:09,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:39:09,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477855982] [2022-11-22 01:39:09,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:39:09,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:39:09,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:39:09,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:39:09,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:39:09,683 INFO L87 Difference]: Start difference. First operand 7836 states and 11306 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:11,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:39:11,395 INFO L93 Difference]: Finished difference Result 10420 states and 15152 transitions. [2022-11-22 01:39:11,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:39:11,395 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2022-11-22 01:39:11,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:39:11,414 INFO L225 Difference]: With dead ends: 10420 [2022-11-22 01:39:11,415 INFO L226 Difference]: Without dead ends: 7273 [2022-11-22 01:39:11,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:39:11,421 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 851 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:39:11,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 776 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:39:11,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7273 states. [2022-11-22 01:39:12,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7273 to 7271. [2022-11-22 01:39:12,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7271 states, 7270 states have (on average 1.4444291609353508) internal successors, (10501), 7270 states have internal predecessors, (10501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:12,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7271 states to 7271 states and 10501 transitions. [2022-11-22 01:39:12,873 INFO L78 Accepts]: Start accepts. Automaton has 7271 states and 10501 transitions. Word has length 131 [2022-11-22 01:39:12,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:39:12,873 INFO L495 AbstractCegarLoop]: Abstraction has 7271 states and 10501 transitions. [2022-11-22 01:39:12,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:12,874 INFO L276 IsEmpty]: Start isEmpty. Operand 7271 states and 10501 transitions. [2022-11-22 01:39:12,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-22 01:39:12,879 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:39:12,879 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:39:12,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-22 01:39:12,879 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:39:12,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:39:12,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1698102289, now seen corresponding path program 1 times [2022-11-22 01:39:12,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:39:12,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932280173] [2022-11-22 01:39:12,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:39:12,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:39:12,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:39:13,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:39:13,027 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:39:13,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932280173] [2022-11-22 01:39:13,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932280173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:39:13,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:39:13,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:39:13,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400449747] [2022-11-22 01:39:13,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:39:13,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:39:13,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:39:13,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:39:13,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:39:13,030 INFO L87 Difference]: Start difference. First operand 7271 states and 10501 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:14,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:39:14,784 INFO L93 Difference]: Finished difference Result 14439 states and 20883 transitions. [2022-11-22 01:39:14,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:39:14,785 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2022-11-22 01:39:14,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:39:14,803 INFO L225 Difference]: With dead ends: 14439 [2022-11-22 01:39:14,803 INFO L226 Difference]: Without dead ends: 7271 [2022-11-22 01:39:14,811 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 [2022-11-22 01:39:14,812 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 884 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:39:14,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 256 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:39:14,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7271 states. [2022-11-22 01:39:16,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7271 to 7271. [2022-11-22 01:39:16,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7271 states, 7270 states have (on average 1.427372764786795) internal successors, (10377), 7270 states have internal predecessors, (10377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:16,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7271 states to 7271 states and 10377 transitions. [2022-11-22 01:39:16,470 INFO L78 Accepts]: Start accepts. Automaton has 7271 states and 10377 transitions. Word has length 131 [2022-11-22 01:39:16,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:39:16,471 INFO L495 AbstractCegarLoop]: Abstraction has 7271 states and 10377 transitions. [2022-11-22 01:39:16,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:16,471 INFO L276 IsEmpty]: Start isEmpty. Operand 7271 states and 10377 transitions. [2022-11-22 01:39:16,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-22 01:39:16,476 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:39:16,476 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:39:16,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-22 01:39:16,476 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:39:16,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:39:16,477 INFO L85 PathProgramCache]: Analyzing trace with hash 985329552, now seen corresponding path program 1 times [2022-11-22 01:39:16,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:39:16,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168657361] [2022-11-22 01:39:16,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:39:16,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:39:16,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:39:17,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:39:17,143 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:39:17,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168657361] [2022-11-22 01:39:17,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168657361] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:39:17,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:39:17,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:39:17,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922005859] [2022-11-22 01:39:17,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:39:17,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:39:17,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:39:17,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:39:17,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:39:17,145 INFO L87 Difference]: Start difference. First operand 7271 states and 10377 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:19,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:39:19,204 INFO L93 Difference]: Finished difference Result 12240 states and 17725 transitions. [2022-11-22 01:39:19,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:39:19,204 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2022-11-22 01:39:19,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:39:19,223 INFO L225 Difference]: With dead ends: 12240 [2022-11-22 01:39:19,223 INFO L226 Difference]: Without dead ends: 7665 [2022-11-22 01:39:19,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:39:19,230 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 942 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:39:19,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [942 Valid, 679 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:39:19,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7665 states. [2022-11-22 01:39:21,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7665 to 6468. [2022-11-22 01:39:21,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6468 states, 6467 states have (on average 1.4284830678830989) internal successors, (9238), 6467 states have internal predecessors, (9238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:21,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6468 states to 6468 states and 9238 transitions. [2022-11-22 01:39:21,102 INFO L78 Accepts]: Start accepts. Automaton has 6468 states and 9238 transitions. Word has length 131 [2022-11-22 01:39:21,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:39:21,103 INFO L495 AbstractCegarLoop]: Abstraction has 6468 states and 9238 transitions. [2022-11-22 01:39:21,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:21,104 INFO L276 IsEmpty]: Start isEmpty. Operand 6468 states and 9238 transitions. [2022-11-22 01:39:21,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-22 01:39:21,108 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:39:21,108 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:39:21,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-22 01:39:21,109 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:39:21,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:39:21,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1535946816, now seen corresponding path program 1 times [2022-11-22 01:39:21,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:39:21,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266387832] [2022-11-22 01:39:21,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:39:21,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:39:21,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:39:27,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:39:27,313 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:39:27,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266387832] [2022-11-22 01:39:27,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266387832] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:39:27,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:39:27,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-22 01:39:27,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144500585] [2022-11-22 01:39:27,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:39:27,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-22 01:39:27,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:39:27,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-22 01:39:27,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-11-22 01:39:27,316 INFO L87 Difference]: Start difference. First operand 6468 states and 9238 transitions. Second operand has 27 states, 27 states have (on average 4.851851851851852) internal successors, (131), 26 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:39,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:39:39,064 INFO L93 Difference]: Finished difference Result 10669 states and 15146 transitions. [2022-11-22 01:39:39,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-22 01:39:39,065 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.851851851851852) internal successors, (131), 26 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2022-11-22 01:39:39,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:39:39,080 INFO L225 Difference]: With dead ends: 10669 [2022-11-22 01:39:39,080 INFO L226 Difference]: Without dead ends: 7354 [2022-11-22 01:39:39,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=408, Invalid=1484, Unknown=0, NotChecked=0, Total=1892 [2022-11-22 01:39:39,085 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 1004 mSDsluCounter, 6074 mSDsCounter, 0 mSdLazyCounter, 2649 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1004 SdHoareTripleChecker+Valid, 6488 SdHoareTripleChecker+Invalid, 2652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-22 01:39:39,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1004 Valid, 6488 Invalid, 2652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2649 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-22 01:39:39,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7354 states. [2022-11-22 01:39:40,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7354 to 6590. [2022-11-22 01:39:40,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6590 states, 6589 states have (on average 1.4232812262862347) internal successors, (9378), 6589 states have internal predecessors, (9378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:40,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6590 states to 6590 states and 9378 transitions. [2022-11-22 01:39:40,948 INFO L78 Accepts]: Start accepts. Automaton has 6590 states and 9378 transitions. Word has length 131 [2022-11-22 01:39:40,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:39:40,948 INFO L495 AbstractCegarLoop]: Abstraction has 6590 states and 9378 transitions. [2022-11-22 01:39:40,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.851851851851852) internal successors, (131), 26 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:40,948 INFO L276 IsEmpty]: Start isEmpty. Operand 6590 states and 9378 transitions. [2022-11-22 01:39:40,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-22 01:39:40,952 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:39:40,952 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:39:40,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-22 01:39:40,952 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:39:40,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:39:40,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1928959065, now seen corresponding path program 1 times [2022-11-22 01:39:40,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:39:40,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42463195] [2022-11-22 01:39:40,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:39:40,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:39:40,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:39:41,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:39:41,033 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:39:41,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42463195] [2022-11-22 01:39:41,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42463195] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:39:41,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:39:41,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:39:41,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675195516] [2022-11-22 01:39:41,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:39:41,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:39:41,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:39:41,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:39:41,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:39:41,036 INFO L87 Difference]: Start difference. First operand 6590 states and 9378 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:42,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:39:42,621 INFO L93 Difference]: Finished difference Result 10479 states and 14933 transitions. [2022-11-22 01:39:42,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:39:42,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-11-22 01:39:42,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:39:42,633 INFO L225 Difference]: With dead ends: 10479 [2022-11-22 01:39:42,633 INFO L226 Difference]: Without dead ends: 6614 [2022-11-22 01:39:42,640 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 [2022-11-22 01:39:42,640 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 244 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:39:42,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 271 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:39:42,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6614 states. [2022-11-22 01:39:44,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6614 to 6542. [2022-11-22 01:39:44,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6542 states, 6541 states have (on average 1.4188961932426234) internal successors, (9281), 6541 states have internal predecessors, (9281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:44,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6542 states to 6542 states and 9281 transitions. [2022-11-22 01:39:44,231 INFO L78 Accepts]: Start accepts. Automaton has 6542 states and 9281 transitions. Word has length 132 [2022-11-22 01:39:44,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:39:44,231 INFO L495 AbstractCegarLoop]: Abstraction has 6542 states and 9281 transitions. [2022-11-22 01:39:44,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:44,232 INFO L276 IsEmpty]: Start isEmpty. Operand 6542 states and 9281 transitions. [2022-11-22 01:39:44,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-22 01:39:44,235 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:39:44,236 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:39:44,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-22 01:39:44,236 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:39:44,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:39:44,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1644653967, now seen corresponding path program 1 times [2022-11-22 01:39:44,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:39:44,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32283300] [2022-11-22 01:39:44,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:39:44,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:39:44,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:39:44,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:39:44,314 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:39:44,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32283300] [2022-11-22 01:39:44,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32283300] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:39:44,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:39:44,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:39:44,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363933070] [2022-11-22 01:39:44,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:39:44,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:39:44,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:39:44,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:39:44,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:39:44,316 INFO L87 Difference]: Start difference. First operand 6542 states and 9281 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:46,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:39:46,549 INFO L93 Difference]: Finished difference Result 11532 states and 16325 transitions. [2022-11-22 01:39:46,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:39:46,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-11-22 01:39:46,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:39:46,560 INFO L225 Difference]: With dead ends: 11532 [2022-11-22 01:39:46,561 INFO L226 Difference]: Without dead ends: 7151 [2022-11-22 01:39:46,572 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 [2022-11-22 01:39:46,573 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 246 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:39:46,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 340 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:39:46,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7151 states. [2022-11-22 01:39:48,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7151 to 6494. [2022-11-22 01:39:48,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6494 states, 6493 states have (on average 1.4144463268134915) internal successors, (9184), 6493 states have internal predecessors, (9184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:48,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6494 states to 6494 states and 9184 transitions. [2022-11-22 01:39:48,163 INFO L78 Accepts]: Start accepts. Automaton has 6494 states and 9184 transitions. Word has length 132 [2022-11-22 01:39:48,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:39:48,163 INFO L495 AbstractCegarLoop]: Abstraction has 6494 states and 9184 transitions. [2022-11-22 01:39:48,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:48,164 INFO L276 IsEmpty]: Start isEmpty. Operand 6494 states and 9184 transitions. [2022-11-22 01:39:48,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-22 01:39:48,167 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:39:48,168 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:39:48,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-22 01:39:48,168 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:39:48,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:39:48,169 INFO L85 PathProgramCache]: Analyzing trace with hash 980274033, now seen corresponding path program 1 times [2022-11-22 01:39:48,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:39:48,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462788125] [2022-11-22 01:39:48,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:39:48,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:39:48,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:39:48,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:39:48,244 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:39:48,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462788125] [2022-11-22 01:39:48,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462788125] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:39:48,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:39:48,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:39:48,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744562085] [2022-11-22 01:39:48,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:39:48,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:39:48,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:39:48,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:39:48,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:39:48,246 INFO L87 Difference]: Start difference. First operand 6494 states and 9184 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:49,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:39:49,885 INFO L93 Difference]: Finished difference Result 11338 states and 15955 transitions. [2022-11-22 01:39:49,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:39:49,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-11-22 01:39:49,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:39:49,896 INFO L225 Difference]: With dead ends: 11338 [2022-11-22 01:39:49,896 INFO L226 Difference]: Without dead ends: 7365 [2022-11-22 01:39:49,901 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 [2022-11-22 01:39:49,901 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 249 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:39:49,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 381 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:39:49,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7365 states. [2022-11-22 01:39:51,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7365 to 6434. [2022-11-22 01:39:51,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6434 states, 6433 states have (on average 1.4106948546556817) internal successors, (9075), 6433 states have internal predecessors, (9075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:51,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6434 states to 6434 states and 9075 transitions. [2022-11-22 01:39:51,297 INFO L78 Accepts]: Start accepts. Automaton has 6434 states and 9075 transitions. Word has length 132 [2022-11-22 01:39:51,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:39:51,297 INFO L495 AbstractCegarLoop]: Abstraction has 6434 states and 9075 transitions. [2022-11-22 01:39:51,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:51,298 INFO L276 IsEmpty]: Start isEmpty. Operand 6434 states and 9075 transitions. [2022-11-22 01:39:51,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-22 01:39:51,302 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:39:51,303 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:39:51,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-22 01:39:51,303 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:39:51,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:39:51,304 INFO L85 PathProgramCache]: Analyzing trace with hash 522978550, now seen corresponding path program 1 times [2022-11-22 01:39:51,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:39:51,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241037230] [2022-11-22 01:39:51,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:39:51,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:39:51,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:39:51,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:39:51,389 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:39:51,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241037230] [2022-11-22 01:39:51,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241037230] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:39:51,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:39:51,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:39:51,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655534212] [2022-11-22 01:39:51,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:39:51,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:39:51,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:39:51,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:39:51,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:39:51,391 INFO L87 Difference]: Start difference. First operand 6434 states and 9075 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:53,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:39:53,368 INFO L93 Difference]: Finished difference Result 14181 states and 19887 transitions. [2022-11-22 01:39:53,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:39:53,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-11-22 01:39:53,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:39:53,376 INFO L225 Difference]: With dead ends: 14181 [2022-11-22 01:39:53,376 INFO L226 Difference]: Without dead ends: 8017 [2022-11-22 01:39:53,381 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 [2022-11-22 01:39:53,381 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 243 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:39:53,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 357 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:39:53,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8017 states. [2022-11-22 01:39:55,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8017 to 6357. [2022-11-22 01:39:55,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6357 states, 6356 states have (on average 1.4046570169918187) internal successors, (8928), 6356 states have internal predecessors, (8928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:55,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6357 states to 6357 states and 8928 transitions. [2022-11-22 01:39:55,105 INFO L78 Accepts]: Start accepts. Automaton has 6357 states and 8928 transitions. Word has length 132 [2022-11-22 01:39:55,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:39:55,106 INFO L495 AbstractCegarLoop]: Abstraction has 6357 states and 8928 transitions. [2022-11-22 01:39:55,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:55,106 INFO L276 IsEmpty]: Start isEmpty. Operand 6357 states and 8928 transitions. [2022-11-22 01:39:55,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-22 01:39:55,109 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:39:55,109 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:39:55,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-22 01:39:55,110 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:39:55,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:39:55,110 INFO L85 PathProgramCache]: Analyzing trace with hash 713413560, now seen corresponding path program 1 times [2022-11-22 01:39:55,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:39:55,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474667850] [2022-11-22 01:39:55,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:39:55,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:39:55,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:39:55,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:39:55,184 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:39:55,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474667850] [2022-11-22 01:39:55,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474667850] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:39:55,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:39:55,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:39:55,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436709610] [2022-11-22 01:39:55,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:39:55,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:39:55,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:39:55,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:39:55,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:39:55,186 INFO L87 Difference]: Start difference. First operand 6357 states and 8928 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:56,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:39:56,785 INFO L93 Difference]: Finished difference Result 11619 states and 16332 transitions. [2022-11-22 01:39:56,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:39:56,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-11-22 01:39:56,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:39:56,793 INFO L225 Difference]: With dead ends: 11619 [2022-11-22 01:39:56,793 INFO L226 Difference]: Without dead ends: 6911 [2022-11-22 01:39:56,795 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 [2022-11-22 01:39:56,796 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 229 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:39:56,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 301 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:39:56,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6911 states. [2022-11-22 01:39:58,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6911 to 6292. [2022-11-22 01:39:58,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6292 states, 6291 states have (on average 1.3996185026227945) internal successors, (8805), 6291 states have internal predecessors, (8805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:58,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6292 states to 6292 states and 8805 transitions. [2022-11-22 01:39:58,343 INFO L78 Accepts]: Start accepts. Automaton has 6292 states and 8805 transitions. Word has length 132 [2022-11-22 01:39:58,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:39:58,344 INFO L495 AbstractCegarLoop]: Abstraction has 6292 states and 8805 transitions. [2022-11-22 01:39:58,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:58,344 INFO L276 IsEmpty]: Start isEmpty. Operand 6292 states and 8805 transitions. [2022-11-22 01:39:58,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-22 01:39:58,347 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:39:58,348 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:39:58,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-22 01:39:58,348 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:39:58,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:39:58,349 INFO L85 PathProgramCache]: Analyzing trace with hash 228857818, now seen corresponding path program 1 times [2022-11-22 01:39:58,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:39:58,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966387936] [2022-11-22 01:39:58,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:39:58,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:39:58,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:39:58,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:39:58,424 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:39:58,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966387936] [2022-11-22 01:39:58,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966387936] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:39:58,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:39:58,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:39:58,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489329551] [2022-11-22 01:39:58,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:39:58,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:39:58,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:39:58,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:39:58,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:39:58,426 INFO L87 Difference]: Start difference. First operand 6292 states and 8805 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:59,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:39:59,895 INFO L93 Difference]: Finished difference Result 10960 states and 15382 transitions. [2022-11-22 01:39:59,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:39:59,895 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-11-22 01:39:59,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:39:59,905 INFO L225 Difference]: With dead ends: 10960 [2022-11-22 01:39:59,905 INFO L226 Difference]: Without dead ends: 6353 [2022-11-22 01:39:59,909 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 [2022-11-22 01:39:59,910 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 214 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:39:59,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 267 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:39:59,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6353 states. [2022-11-22 01:40:01,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6353 to 6188. [2022-11-22 01:40:01,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6188 states, 6187 states have (on average 1.3959915952804267) internal successors, (8637), 6187 states have internal predecessors, (8637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:40:01,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6188 states to 6188 states and 8637 transitions. [2022-11-22 01:40:01,123 INFO L78 Accepts]: Start accepts. Automaton has 6188 states and 8637 transitions. Word has length 132 [2022-11-22 01:40:01,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:40:01,123 INFO L495 AbstractCegarLoop]: Abstraction has 6188 states and 8637 transitions. [2022-11-22 01:40:01,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:40:01,123 INFO L276 IsEmpty]: Start isEmpty. Operand 6188 states and 8637 transitions. [2022-11-22 01:40:01,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-22 01:40:01,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:40:01,126 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:40:01,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-22 01:40:01,126 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:40:01,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:40:01,127 INFO L85 PathProgramCache]: Analyzing trace with hash 190276819, now seen corresponding path program 1 times [2022-11-22 01:40:01,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:40:01,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532826910] [2022-11-22 01:40:01,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:40:01,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:40:01,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:40:09,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:40:09,074 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:40:09,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532826910] [2022-11-22 01:40:09,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532826910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:40:09,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:40:09,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-11-22 01:40:09,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402905294] [2022-11-22 01:40:09,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:40:09,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-22 01:40:09,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:40:09,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-22 01:40:09,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1432, Unknown=0, NotChecked=0, Total=1560 [2022-11-22 01:40:09,077 INFO L87 Difference]: Start difference. First operand 6188 states and 8637 transitions. Second operand has 40 states, 40 states have (on average 3.35) internal successors, (134), 39 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:40:24,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:40:24,673 INFO L93 Difference]: Finished difference Result 15903 states and 22937 transitions. [2022-11-22 01:40:24,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-22 01:40:24,676 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.35) internal successors, (134), 39 states have internal predecessors, (134), 0 states have call successors, (0), 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 134 [2022-11-22 01:40:24,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:40:24,691 INFO L225 Difference]: With dead ends: 15903 [2022-11-22 01:40:24,692 INFO L226 Difference]: Without dead ends: 11096 [2022-11-22 01:40:24,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1092 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=770, Invalid=4632, Unknown=0, NotChecked=0, Total=5402 [2022-11-22 01:40:24,699 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 2032 mSDsluCounter, 4253 mSDsCounter, 0 mSdLazyCounter, 3978 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2032 SdHoareTripleChecker+Valid, 4533 SdHoareTripleChecker+Invalid, 4007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 3978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-22 01:40:24,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2032 Valid, 4533 Invalid, 4007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 3978 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-22 01:40:24,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11096 states. [2022-11-22 01:40:27,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11096 to 10858. [2022-11-22 01:40:27,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10858 states, 10857 states have (on average 1.4251634889932763) internal successors, (15473), 10857 states have internal predecessors, (15473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:40:27,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10858 states to 10858 states and 15473 transitions. [2022-11-22 01:40:27,671 INFO L78 Accepts]: Start accepts. Automaton has 10858 states and 15473 transitions. Word has length 134 [2022-11-22 01:40:27,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:40:27,672 INFO L495 AbstractCegarLoop]: Abstraction has 10858 states and 15473 transitions. [2022-11-22 01:40:27,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.35) internal successors, (134), 39 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:40:27,672 INFO L276 IsEmpty]: Start isEmpty. Operand 10858 states and 15473 transitions. [2022-11-22 01:40:27,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-22 01:40:27,675 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:40:27,675 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:40:27,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-22 01:40:27,676 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:40:27,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:40:27,676 INFO L85 PathProgramCache]: Analyzing trace with hash -664181913, now seen corresponding path program 1 times [2022-11-22 01:40:27,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:40:27,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587818120] [2022-11-22 01:40:27,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:40:27,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:40:27,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:40:35,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:40:35,524 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:40:35,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587818120] [2022-11-22 01:40:35,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587818120] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:40:35,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:40:35,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-11-22 01:40:35,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836379576] [2022-11-22 01:40:35,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:40:35,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-22 01:40:35,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:40:35,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-22 01:40:35,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1204, Unknown=0, NotChecked=0, Total=1332 [2022-11-22 01:40:35,526 INFO L87 Difference]: Start difference. First operand 10858 states and 15473 transitions. Second operand has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 36 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:40:56,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:40:56,620 INFO L93 Difference]: Finished difference Result 20026 states and 28588 transitions. [2022-11-22 01:40:56,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-22 01:40:56,620 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 36 states have internal predecessors, (134), 0 states have call successors, (0), 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 134 [2022-11-22 01:40:56,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:40:56,640 INFO L225 Difference]: With dead ends: 20026 [2022-11-22 01:40:56,640 INFO L226 Difference]: Without dead ends: 16970 [2022-11-22 01:40:56,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1349 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=819, Invalid=4881, Unknown=0, NotChecked=0, Total=5700 [2022-11-22 01:40:56,645 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 2587 mSDsluCounter, 5394 mSDsCounter, 0 mSdLazyCounter, 4563 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2587 SdHoareTripleChecker+Valid, 5711 SdHoareTripleChecker+Invalid, 4649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 4563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:40:56,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2587 Valid, 5711 Invalid, 4649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 4563 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-11-22 01:40:56,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16970 states. [2022-11-22 01:41:00,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16970 to 12612. [2022-11-22 01:41:00,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12612 states, 12611 states have (on average 1.4266909840615336) internal successors, (17992), 12611 states have internal predecessors, (17992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:41:00,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12612 states to 12612 states and 17992 transitions. [2022-11-22 01:41:00,545 INFO L78 Accepts]: Start accepts. Automaton has 12612 states and 17992 transitions. Word has length 134 [2022-11-22 01:41:00,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:41:00,545 INFO L495 AbstractCegarLoop]: Abstraction has 12612 states and 17992 transitions. [2022-11-22 01:41:00,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 36 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:41:00,546 INFO L276 IsEmpty]: Start isEmpty. Operand 12612 states and 17992 transitions. [2022-11-22 01:41:00,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-22 01:41:00,549 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:41:00,549 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:41:00,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-22 01:41:00,550 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:41:00,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:41:00,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1187251943, now seen corresponding path program 1 times [2022-11-22 01:41:00,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:41:00,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259853957] [2022-11-22 01:41:00,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:41:00,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:41:00,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:41:08,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:41:08,986 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:41:08,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259853957] [2022-11-22 01:41:08,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259853957] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:41:08,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:41:08,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-11-22 01:41:08,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529025346] [2022-11-22 01:41:08,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:41:08,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-22 01:41:08,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:41:08,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-22 01:41:08,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1475, Unknown=0, NotChecked=0, Total=1640 [2022-11-22 01:41:08,989 INFO L87 Difference]: Start difference. First operand 12612 states and 17992 transitions. Second operand has 41 states, 41 states have (on average 3.268292682926829) internal successors, (134), 40 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:41:27,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:41:27,420 INFO L93 Difference]: Finished difference Result 22620 states and 32443 transitions. [2022-11-22 01:41:27,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-22 01:41:27,420 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.268292682926829) internal successors, (134), 40 states have internal predecessors, (134), 0 states have call successors, (0), 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 134 [2022-11-22 01:41:27,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:41:27,445 INFO L225 Difference]: With dead ends: 22620 [2022-11-22 01:41:27,445 INFO L226 Difference]: Without dead ends: 18739 [2022-11-22 01:41:27,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1220 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=929, Invalid=4621, Unknown=0, NotChecked=0, Total=5550 [2022-11-22 01:41:27,451 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 2095 mSDsluCounter, 5033 mSDsCounter, 0 mSdLazyCounter, 4311 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2095 SdHoareTripleChecker+Valid, 5338 SdHoareTripleChecker+Invalid, 4398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 4311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-22 01:41:27,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2095 Valid, 5338 Invalid, 4398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 4311 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-11-22 01:41:27,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18739 states. [2022-11-22 01:41:30,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18739 to 12593. [2022-11-22 01:41:30,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12593 states, 12592 states have (on average 1.4264612452350698) internal successors, (17962), 12592 states have internal predecessors, (17962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:41:30,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12593 states to 12593 states and 17962 transitions. [2022-11-22 01:41:30,730 INFO L78 Accepts]: Start accepts. Automaton has 12593 states and 17962 transitions. Word has length 134 [2022-11-22 01:41:30,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:41:30,730 INFO L495 AbstractCegarLoop]: Abstraction has 12593 states and 17962 transitions. [2022-11-22 01:41:30,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.268292682926829) internal successors, (134), 40 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:41:30,731 INFO L276 IsEmpty]: Start isEmpty. Operand 12593 states and 17962 transitions. [2022-11-22 01:41:30,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-22 01:41:30,733 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:41:30,734 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:41:30,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-22 01:41:30,734 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:41:30,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:41:30,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1080483705, now seen corresponding path program 1 times [2022-11-22 01:41:30,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:41:30,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152054083] [2022-11-22 01:41:30,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:41:30,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:41:30,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:41:40,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:41:40,328 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:41:40,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152054083] [2022-11-22 01:41:40,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152054083] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:41:40,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:41:40,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-11-22 01:41:40,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767166286] [2022-11-22 01:41:40,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:41:40,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-22 01:41:40,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:41:40,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-22 01:41:40,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1505, Unknown=0, NotChecked=0, Total=1640 [2022-11-22 01:41:40,331 INFO L87 Difference]: Start difference. First operand 12593 states and 17962 transitions. Second operand has 41 states, 41 states have (on average 3.268292682926829) internal successors, (134), 40 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:44:03,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:44:03,490 INFO L93 Difference]: Finished difference Result 73753 states and 107215 transitions. [2022-11-22 01:44:03,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2022-11-22 01:44:03,491 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.268292682926829) internal successors, (134), 40 states have internal predecessors, (134), 0 states have call successors, (0), 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 134 [2022-11-22 01:44:03,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:44:03,613 INFO L225 Difference]: With dead ends: 73753 [2022-11-22 01:44:03,613 INFO L226 Difference]: Without dead ends: 67760 [2022-11-22 01:44:03,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12639 ImplicationChecksByTransitivity, 92.6s TimeCoverageRelationStatistics Valid=6780, Invalid=31440, Unknown=0, NotChecked=0, Total=38220 [2022-11-22 01:44:03,645 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 7141 mSDsluCounter, 14184 mSDsCounter, 0 mSdLazyCounter, 15083 mSolverCounterSat, 339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7141 SdHoareTripleChecker+Valid, 14682 SdHoareTripleChecker+Invalid, 15422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 15083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.8s IncrementalHoareTripleChecker+Time [2022-11-22 01:44:03,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7141 Valid, 14682 Invalid, 15422 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [339 Valid, 15083 Invalid, 0 Unknown, 0 Unchecked, 24.8s Time] [2022-11-22 01:44:03,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67760 states. [2022-11-22 01:44:17,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67760 to 31130. [2022-11-22 01:44:17,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31130 states, 31129 states have (on average 1.4521828520029554) internal successors, (45205), 31129 states have internal predecessors, (45205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:44:17,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31130 states to 31130 states and 45205 transitions. [2022-11-22 01:44:17,183 INFO L78 Accepts]: Start accepts. Automaton has 31130 states and 45205 transitions. Word has length 134 [2022-11-22 01:44:17,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:44:17,183 INFO L495 AbstractCegarLoop]: Abstraction has 31130 states and 45205 transitions. [2022-11-22 01:44:17,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.268292682926829) internal successors, (134), 40 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:44:17,184 INFO L276 IsEmpty]: Start isEmpty. Operand 31130 states and 45205 transitions. [2022-11-22 01:44:17,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-22 01:44:17,185 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:44:17,185 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:44:17,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-22 01:44:17,186 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:44:17,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:44:17,186 INFO L85 PathProgramCache]: Analyzing trace with hash -689081663, now seen corresponding path program 1 times [2022-11-22 01:44:17,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:44:17,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142131387] [2022-11-22 01:44:17,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:44:17,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:44:17,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:44:25,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:44:25,583 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:44:25,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142131387] [2022-11-22 01:44:25,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142131387] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:44:25,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:44:25,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-11-22 01:44:25,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627515971] [2022-11-22 01:44:25,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:44:25,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-22 01:44:25,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:44:25,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-22 01:44:25,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1430, Unknown=0, NotChecked=0, Total=1560 [2022-11-22 01:44:25,586 INFO L87 Difference]: Start difference. First operand 31130 states and 45205 transitions. Second operand has 40 states, 40 states have (on average 3.35) internal successors, (134), 39 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:44:58,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:44:58,557 INFO L93 Difference]: Finished difference Result 46047 states and 67085 transitions. [2022-11-22 01:44:58,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-22 01:44:58,557 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.35) internal successors, (134), 39 states have internal predecessors, (134), 0 states have call successors, (0), 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 134 [2022-11-22 01:44:58,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:44:58,613 INFO L225 Difference]: With dead ends: 46047 [2022-11-22 01:44:58,613 INFO L226 Difference]: Without dead ends: 40379 [2022-11-22 01:44:58,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1068 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=749, Invalid=4507, Unknown=0, NotChecked=0, Total=5256 [2022-11-22 01:44:58,622 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 1379 mSDsluCounter, 5393 mSDsCounter, 0 mSdLazyCounter, 4455 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1379 SdHoareTripleChecker+Valid, 5751 SdHoareTripleChecker+Invalid, 4470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 4455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-22 01:44:58,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1379 Valid, 5751 Invalid, 4470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 4455 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-11-22 01:44:58,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40379 states. [2022-11-22 01:45:11,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40379 to 31198. [2022-11-22 01:45:11,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31198 states, 31197 states have (on average 1.4514216110523448) internal successors, (45280), 31197 states have internal predecessors, (45280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:45:11,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31198 states to 31198 states and 45280 transitions. [2022-11-22 01:45:11,918 INFO L78 Accepts]: Start accepts. Automaton has 31198 states and 45280 transitions. Word has length 134 [2022-11-22 01:45:11,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:45:11,919 INFO L495 AbstractCegarLoop]: Abstraction has 31198 states and 45280 transitions. [2022-11-22 01:45:11,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.35) internal successors, (134), 39 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:45:11,919 INFO L276 IsEmpty]: Start isEmpty. Operand 31198 states and 45280 transitions. [2022-11-22 01:45:11,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-22 01:45:11,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:45:11,922 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:45:11,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-22 01:45:11,923 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:45:11,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:45:11,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1860384615, now seen corresponding path program 1 times [2022-11-22 01:45:11,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:45:11,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959368153] [2022-11-22 01:45:11,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:45:11,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:45:12,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:45:18,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:45:18,818 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:45:18,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959368153] [2022-11-22 01:45:18,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959368153] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:45:18,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:45:18,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-11-22 01:45:18,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980994284] [2022-11-22 01:45:18,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:45:18,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-22 01:45:18,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:45:18,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-22 01:45:18,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1222, Unknown=0, NotChecked=0, Total=1332 [2022-11-22 01:45:18,820 INFO L87 Difference]: Start difference. First operand 31198 states and 45280 transitions. Second operand has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 36 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:45:50,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:45:50,310 INFO L93 Difference]: Finished difference Result 48506 states and 70795 transitions. [2022-11-22 01:45:50,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-22 01:45:50,311 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 36 states have internal predecessors, (134), 0 states have call successors, (0), 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 134 [2022-11-22 01:45:50,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:45:50,370 INFO L225 Difference]: With dead ends: 48506 [2022-11-22 01:45:50,370 INFO L226 Difference]: Without dead ends: 42804 [2022-11-22 01:45:50,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 878 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=620, Invalid=3936, Unknown=0, NotChecked=0, Total=4556 [2022-11-22 01:45:50,381 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 1356 mSDsluCounter, 6362 mSDsCounter, 0 mSdLazyCounter, 5647 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1356 SdHoareTripleChecker+Valid, 6744 SdHoareTripleChecker+Invalid, 5708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 5647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:45:50,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1356 Valid, 6744 Invalid, 5708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 5647 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-11-22 01:45:50,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42804 states. [2022-11-22 01:46:04,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42804 to 33704. [2022-11-22 01:46:04,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33704 states, 33703 states have (on average 1.4528676972376346) internal successors, (48966), 33703 states have internal predecessors, (48966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:46:04,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33704 states to 33704 states and 48966 transitions. [2022-11-22 01:46:04,904 INFO L78 Accepts]: Start accepts. Automaton has 33704 states and 48966 transitions. Word has length 134 [2022-11-22 01:46:04,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:46:04,905 INFO L495 AbstractCegarLoop]: Abstraction has 33704 states and 48966 transitions. [2022-11-22 01:46:04,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 36 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:46:04,905 INFO L276 IsEmpty]: Start isEmpty. Operand 33704 states and 48966 transitions. [2022-11-22 01:46:04,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-22 01:46:04,907 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:46:04,907 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:46:04,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-22 01:46:04,907 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:46:04,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:46:04,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1664892636, now seen corresponding path program 1 times [2022-11-22 01:46:04,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:46:04,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948355673] [2022-11-22 01:46:04,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:46:04,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:46:04,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:46:04,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:46:04,985 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:46:04,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948355673] [2022-11-22 01:46:04,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948355673] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:46:04,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:46:04,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:46:04,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150383767] [2022-11-22 01:46:04,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:46:04,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:46:04,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:46:04,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:46:04,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:46:04,987 INFO L87 Difference]: Start difference. First operand 33704 states and 48966 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:46:20,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:46:20,240 INFO L93 Difference]: Finished difference Result 45038 states and 65289 transitions. [2022-11-22 01:46:20,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:46:20,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 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 135 [2022-11-22 01:46:20,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:46:20,301 INFO L225 Difference]: With dead ends: 45038 [2022-11-22 01:46:20,301 INFO L226 Difference]: Without dead ends: 39171 [2022-11-22 01:46:20,310 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 [2022-11-22 01:46:20,310 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 179 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:46:20,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 692 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:46:20,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39171 states.