./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5542392f-d93a-4c1d-a886-9581d777d078/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5542392f-d93a-4c1d-a886-9581d777d078/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5542392f-d93a-4c1d-a886-9581d777d078/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5542392f-d93a-4c1d-a886-9581d777d078/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5542392f-d93a-4c1d-a886-9581d777d078/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5542392f-d93a-4c1d-a886-9581d777d078/bin/utaipan-eEHZpOm5b7 --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 c74f92ba3d978b3a2efb098ebc8eb373bc42abebaabf8c6efaf148fbe05036e0 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:21:18,726 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:21:18,730 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:21:18,786 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:21:18,787 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:21:18,792 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:21:18,794 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:21:18,798 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:21:18,801 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:21:18,809 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:21:18,810 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:21:18,812 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:21:18,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:21:18,816 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:21:18,818 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:21:18,828 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:21:18,830 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:21:18,831 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:21:18,834 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:21:18,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:21:18,844 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:21:18,845 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:21:18,849 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:21:18,850 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:21:18,861 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:21:18,862 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:21:18,862 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:21:18,867 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:21:18,868 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:21:18,869 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:21:18,869 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:21:18,870 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:21:18,870 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:21:18,871 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:21:18,872 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:21:18,872 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:21:18,873 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:21:18,873 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:21:18,873 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:21:18,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:21:18,874 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:21:18,876 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5542392f-d93a-4c1d-a886-9581d777d078/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 19:21:18,919 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:21:18,919 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:21:18,920 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:21:18,920 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:21:18,927 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:21:18,928 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:21:18,928 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:21:18,928 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:21:18,928 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:21:18,929 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:21:18,930 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:21:18,930 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:21:18,930 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:21:18,931 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:21:18,931 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:21:18,931 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:21:18,931 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:21:18,932 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:21:18,932 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:21:18,933 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:21:18,933 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:21:18,933 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:21:18,933 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:21:18,933 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:21:18,934 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:21:18,934 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:21:18,936 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:21:18,936 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:21:18,936 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:21:18,936 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:21:18,937 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:21:18,937 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:21:18,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:21:18,938 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:21:18,938 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:21:18,938 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:21:18,938 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:21:18,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:21:18,939 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:21:18,939 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:21:18,939 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:21:18,939 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5542392f-d93a-4c1d-a886-9581d777d078/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5542392f-d93a-4c1d-a886-9581d777d078/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c74f92ba3d978b3a2efb098ebc8eb373bc42abebaabf8c6efaf148fbe05036e0 [2021-11-25 19:21:19,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:21:19,265 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:21:19,267 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:21:19,269 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:21:19,270 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:21:19,271 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5542392f-d93a-4c1d-a886-9581d777d078/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2021-11-25 19:21:19,347 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5542392f-d93a-4c1d-a886-9581d777d078/bin/utaipan-eEHZpOm5b7/data/212356745/f16bf3753d5f4a7d8dd3d3227a18b240/FLAG7c604f57a [2021-11-25 19:21:20,049 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:21:20,050 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5542392f-d93a-4c1d-a886-9581d777d078/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2021-11-25 19:21:20,082 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5542392f-d93a-4c1d-a886-9581d777d078/bin/utaipan-eEHZpOm5b7/data/212356745/f16bf3753d5f4a7d8dd3d3227a18b240/FLAG7c604f57a [2021-11-25 19:21:20,189 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5542392f-d93a-4c1d-a886-9581d777d078/bin/utaipan-eEHZpOm5b7/data/212356745/f16bf3753d5f4a7d8dd3d3227a18b240 [2021-11-25 19:21:20,191 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:21:20,193 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:21:20,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:21:20,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:21:20,200 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:21:20,202 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:21:20" (1/1) ... [2021-11-25 19:21:20,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ca6d672 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:21:20, skipping insertion in model container [2021-11-25 19:21:20,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:21:20" (1/1) ... [2021-11-25 19:21:20,212 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:21:20,332 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:21:20,729 WARN L230 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_5542392f-d93a-4c1d-a886-9581d777d078/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[18857,18870] [2021-11-25 19:21:20,784 WARN L230 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_5542392f-d93a-4c1d-a886-9581d777d078/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[25957,25970] [2021-11-25 19:21:20,808 WARN L230 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_5542392f-d93a-4c1d-a886-9581d777d078/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[29482,29495] [2021-11-25 19:21:20,836 WARN L230 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_5542392f-d93a-4c1d-a886-9581d777d078/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[32880,32893] [2021-11-25 19:21:20,852 WARN L230 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_5542392f-d93a-4c1d-a886-9581d777d078/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[36938,36951] [2021-11-25 19:21:20,866 WARN L230 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_5542392f-d93a-4c1d-a886-9581d777d078/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[40412,40425] [2021-11-25 19:21:20,880 WARN L230 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_5542392f-d93a-4c1d-a886-9581d777d078/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[43977,43990] [2021-11-25 19:21:20,894 WARN L230 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_5542392f-d93a-4c1d-a886-9581d777d078/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[47412,47425] [2021-11-25 19:21:20,908 WARN L230 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_5542392f-d93a-4c1d-a886-9581d777d078/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[51091,51104] [2021-11-25 19:21:20,921 WARN L230 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_5542392f-d93a-4c1d-a886-9581d777d078/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[54693,54706] [2021-11-25 19:21:20,935 WARN L230 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_5542392f-d93a-4c1d-a886-9581d777d078/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[58222,58235] [2021-11-25 19:21:21,014 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:21:21,027 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:21:21,166 WARN L230 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_5542392f-d93a-4c1d-a886-9581d777d078/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[18857,18870] [2021-11-25 19:21:21,217 WARN L230 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_5542392f-d93a-4c1d-a886-9581d777d078/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[25957,25970] [2021-11-25 19:21:21,250 WARN L230 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_5542392f-d93a-4c1d-a886-9581d777d078/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[29482,29495] [2021-11-25 19:21:21,284 WARN L230 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_5542392f-d93a-4c1d-a886-9581d777d078/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[32880,32893] [2021-11-25 19:21:21,311 WARN L230 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_5542392f-d93a-4c1d-a886-9581d777d078/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[36938,36951] [2021-11-25 19:21:21,328 WARN L230 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_5542392f-d93a-4c1d-a886-9581d777d078/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[40412,40425] [2021-11-25 19:21:21,342 WARN L230 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_5542392f-d93a-4c1d-a886-9581d777d078/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[43977,43990] [2021-11-25 19:21:21,370 WARN L230 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_5542392f-d93a-4c1d-a886-9581d777d078/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[47412,47425] [2021-11-25 19:21:21,381 WARN L230 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_5542392f-d93a-4c1d-a886-9581d777d078/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[51091,51104] [2021-11-25 19:21:21,390 WARN L230 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_5542392f-d93a-4c1d-a886-9581d777d078/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[54693,54706] [2021-11-25 19:21:21,401 WARN L230 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_5542392f-d93a-4c1d-a886-9581d777d078/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[58222,58235] [2021-11-25 19:21:21,423 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:21:21,441 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:21:21,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:21:21 WrapperNode [2021-11-25 19:21:21,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:21:21,443 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:21:21,444 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:21:21,444 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:21:21,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:21:21" (1/1) ... [2021-11-25 19:21:21,479 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:21:21" (1/1) ... [2021-11-25 19:21:21,577 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2770 [2021-11-25 19:21:21,582 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:21:21,582 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:21:21,583 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:21:21,583 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:21:21,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:21:21" (1/1) ... [2021-11-25 19:21:21,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:21:21" (1/1) ... [2021-11-25 19:21:21,606 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:21:21" (1/1) ... [2021-11-25 19:21:21,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:21:21" (1/1) ... [2021-11-25 19:21:21,677 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:21:21" (1/1) ... [2021-11-25 19:21:21,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:21:21" (1/1) ... [2021-11-25 19:21:21,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:21:21" (1/1) ... [2021-11-25 19:21:21,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:21:21,758 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:21:21,758 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:21:21,758 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:21:21,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:21:21" (1/1) ... [2021-11-25 19:21:21,767 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:21:21,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5542392f-d93a-4c1d-a886-9581d777d078/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:21:21,789 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5542392f-d93a-4c1d-a886-9581d777d078/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:21:21,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5542392f-d93a-4c1d-a886-9581d777d078/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:21:21,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:21:21,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:21:21,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:21:21,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:21:22,077 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:21:22,079 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:21:23,654 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:21:23,776 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:21:23,776 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 19:21:23,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:21:23 BoogieIcfgContainer [2021-11-25 19:21:23,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:21:23,785 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:21:23,785 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:21:23,789 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:21:23,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:21:20" (1/3) ... [2021-11-25 19:21:23,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5849d950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:21:23, skipping insertion in model container [2021-11-25 19:21:23,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:21:21" (2/3) ... [2021-11-25 19:21:23,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5849d950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:21:23, skipping insertion in model container [2021-11-25 19:21:23,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:21:23" (3/3) ... [2021-11-25 19:21:23,793 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2021-11-25 19:21:23,802 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:21:23,802 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-25 19:21:23,850 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:21:23,857 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:21:23,857 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-25 19:21:23,886 INFO L276 IsEmpty]: Start isEmpty. Operand has 551 states, 539 states have (on average 1.784786641929499) internal successors, (962), 550 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:23,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-25 19:21:23,906 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:21:23,906 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:21:23,907 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 19:21:23,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:21:23,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1518492486, now seen corresponding path program 1 times [2021-11-25 19:21:23,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:21:23,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243259484] [2021-11-25 19:21:23,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:21:23,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:21:24,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:21:24,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:21:24,349 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:21:24,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243259484] [2021-11-25 19:21:24,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243259484] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:21:24,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:21:24,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:21:24,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382392599] [2021-11-25 19:21:24,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:21:24,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:21:24,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:21:24,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:21:24,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:21:24,394 INFO L87 Difference]: Start difference. First operand has 551 states, 539 states have (on average 1.784786641929499) internal successors, (962), 550 states have internal predecessors, (962), 0 states have call successors, (0), 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 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:25,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:21:25,082 INFO L93 Difference]: Finished difference Result 746 states and 1267 transitions. [2021-11-25 19:21:25,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:21:25,085 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2021-11-25 19:21:25,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:21:25,112 INFO L225 Difference]: With dead ends: 746 [2021-11-25 19:21:25,113 INFO L226 Difference]: Without dead ends: 485 [2021-11-25 19:21:25,121 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:21:25,127 INFO L933 BasicCegarLoop]: 461 mSDtfsCounter, 2320 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2320 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:21:25,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2320 Valid, 517 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 19:21:25,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2021-11-25 19:21:25,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 485. [2021-11-25 19:21:25,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 474 states have (on average 1.2552742616033756) internal successors, (595), 484 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:25,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 595 transitions. [2021-11-25 19:21:25,217 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 595 transitions. Word has length 59 [2021-11-25 19:21:25,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:21:25,217 INFO L470 AbstractCegarLoop]: Abstraction has 485 states and 595 transitions. [2021-11-25 19:21:25,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:25,218 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 595 transitions. [2021-11-25 19:21:25,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-25 19:21:25,223 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:21:25,223 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:21:25,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:21:25,224 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 19:21:25,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:21:25,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1943729877, now seen corresponding path program 1 times [2021-11-25 19:21:25,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:21:25,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533983821] [2021-11-25 19:21:25,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:21:25,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:21:25,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:21:25,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:21:25,381 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:21:25,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533983821] [2021-11-25 19:21:25,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533983821] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:21:25,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:21:25,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:21:25,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064861423] [2021-11-25 19:21:25,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:21:25,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:21:25,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:21:25,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:21:25,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:21:25,389 INFO L87 Difference]: Start difference. First operand 485 states and 595 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:25,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:21:25,660 INFO L93 Difference]: Finished difference Result 566 states and 685 transitions. [2021-11-25 19:21:25,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:21:25,661 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2021-11-25 19:21:25,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:21:25,670 INFO L225 Difference]: With dead ends: 566 [2021-11-25 19:21:25,671 INFO L226 Difference]: Without dead ends: 333 [2021-11-25 19:21:25,673 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:21:25,675 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 1137 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1137 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:21:25,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1137 Valid, 234 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:21:25,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-11-25 19:21:25,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2021-11-25 19:21:25,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 322 states have (on average 1.2484472049689441) internal successors, (402), 332 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:25,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 402 transitions. [2021-11-25 19:21:25,711 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 402 transitions. Word has length 59 [2021-11-25 19:21:25,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:21:25,711 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 402 transitions. [2021-11-25 19:21:25,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:25,711 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 402 transitions. [2021-11-25 19:21:25,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-25 19:21:25,713 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:21:25,713 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:21:25,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:21:25,714 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 19:21:25,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:21:25,715 INFO L85 PathProgramCache]: Analyzing trace with hash -19682530, now seen corresponding path program 1 times [2021-11-25 19:21:25,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:21:25,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192491492] [2021-11-25 19:21:25,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:21:25,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:21:25,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:21:25,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:21:25,881 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:21:25,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192491492] [2021-11-25 19:21:25,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192491492] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:21:25,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:21:25,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:21:25,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103641638] [2021-11-25 19:21:25,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:21:25,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:21:25,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:21:25,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:21:25,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:21:25,886 INFO L87 Difference]: Start difference. First operand 333 states and 402 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:26,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:21:26,172 INFO L93 Difference]: Finished difference Result 595 states and 724 transitions. [2021-11-25 19:21:26,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:21:26,172 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2021-11-25 19:21:26,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:21:26,175 INFO L225 Difference]: With dead ends: 595 [2021-11-25 19:21:26,175 INFO L226 Difference]: Without dead ends: 423 [2021-11-25 19:21:26,176 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:21:26,177 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 1274 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1274 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:21:26,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1274 Valid, 309 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:21:26,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2021-11-25 19:21:26,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 375. [2021-11-25 19:21:26,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 364 states have (on average 1.293956043956044) internal successors, (471), 374 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:26,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 471 transitions. [2021-11-25 19:21:26,207 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 471 transitions. Word has length 59 [2021-11-25 19:21:26,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:21:26,208 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 471 transitions. [2021-11-25 19:21:26,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:26,208 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 471 transitions. [2021-11-25 19:21:26,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-25 19:21:26,209 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:21:26,210 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:21:26,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:21:26,210 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 19:21:26,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:21:26,211 INFO L85 PathProgramCache]: Analyzing trace with hash -732780502, now seen corresponding path program 1 times [2021-11-25 19:21:26,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:21:26,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057567229] [2021-11-25 19:21:26,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:21:26,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:21:26,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:21:26,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:21:26,296 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:21:26,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057567229] [2021-11-25 19:21:26,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057567229] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:21:26,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:21:26,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:21:26,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193469649] [2021-11-25 19:21:26,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:21:26,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:21:26,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:21:26,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:21:26,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:21:26,299 INFO L87 Difference]: Start difference. First operand 375 states and 471 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:26,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:21:26,462 INFO L93 Difference]: Finished difference Result 528 states and 660 transitions. [2021-11-25 19:21:26,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:21:26,463 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2021-11-25 19:21:26,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:21:26,467 INFO L225 Difference]: With dead ends: 528 [2021-11-25 19:21:26,468 INFO L226 Difference]: Without dead ends: 322 [2021-11-25 19:21:26,469 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:21:26,471 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 826 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:21:26,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [826 Valid, 185 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:21:26,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-11-25 19:21:26,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2021-11-25 19:21:26,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 311 states have (on average 1.2958199356913183) internal successors, (403), 321 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:26,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 403 transitions. [2021-11-25 19:21:26,499 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 403 transitions. Word has length 61 [2021-11-25 19:21:26,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:21:26,500 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 403 transitions. [2021-11-25 19:21:26,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:26,518 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 403 transitions. [2021-11-25 19:21:26,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-25 19:21:26,520 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:21:26,520 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:21:26,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 19:21:26,521 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 19:21:26,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:21:26,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1082227329, now seen corresponding path program 1 times [2021-11-25 19:21:26,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:21:26,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779547510] [2021-11-25 19:21:26,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:21:26,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:21:26,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:21:26,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:21:26,726 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:21:26,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779547510] [2021-11-25 19:21:26,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779547510] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:21:26,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:21:26,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 19:21:26,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42479032] [2021-11-25 19:21:26,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:21:26,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 19:21:26,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:21:26,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 19:21:26,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:21:26,729 INFO L87 Difference]: Start difference. First operand 322 states and 403 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:27,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:21:27,417 INFO L93 Difference]: Finished difference Result 637 states and 800 transitions. [2021-11-25 19:21:27,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 19:21:27,418 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2021-11-25 19:21:27,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:21:27,421 INFO L225 Difference]: With dead ends: 637 [2021-11-25 19:21:27,421 INFO L226 Difference]: Without dead ends: 527 [2021-11-25 19:21:27,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 19:21:27,423 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 1305 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1305 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:21:27,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1305 Valid, 824 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 19:21:27,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2021-11-25 19:21:27,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 322. [2021-11-25 19:21:27,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 311 states have (on average 1.292604501607717) internal successors, (402), 321 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:27,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 402 transitions. [2021-11-25 19:21:27,454 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 402 transitions. Word has length 63 [2021-11-25 19:21:27,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:21:27,454 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 402 transitions. [2021-11-25 19:21:27,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:27,455 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 402 transitions. [2021-11-25 19:21:27,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-25 19:21:27,456 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:21:27,456 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:21:27,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 19:21:27,457 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 19:21:27,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:21:27,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1413074335, now seen corresponding path program 1 times [2021-11-25 19:21:27,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:21:27,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436395638] [2021-11-25 19:21:27,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:21:27,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:21:27,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:21:27,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:21:27,574 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:21:27,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436395638] [2021-11-25 19:21:27,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436395638] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:21:27,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:21:27,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 19:21:27,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718911125] [2021-11-25 19:21:27,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:21:27,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 19:21:27,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:21:27,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 19:21:27,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:21:27,577 INFO L87 Difference]: Start difference. First operand 322 states and 402 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:28,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:21:28,215 INFO L93 Difference]: Finished difference Result 643 states and 804 transitions. [2021-11-25 19:21:28,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 19:21:28,216 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2021-11-25 19:21:28,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:21:28,220 INFO L225 Difference]: With dead ends: 643 [2021-11-25 19:21:28,220 INFO L226 Difference]: Without dead ends: 637 [2021-11-25 19:21:28,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 19:21:28,222 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 863 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:21:28,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [863 Valid, 824 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:21:28,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2021-11-25 19:21:28,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 322. [2021-11-25 19:21:28,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 311 states have (on average 1.2893890675241158) internal successors, (401), 321 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:28,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 401 transitions. [2021-11-25 19:21:28,257 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 401 transitions. Word has length 63 [2021-11-25 19:21:28,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:21:28,257 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 401 transitions. [2021-11-25 19:21:28,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:28,258 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 401 transitions. [2021-11-25 19:21:28,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-25 19:21:28,259 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:21:28,259 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:21:28,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 19:21:28,260 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 19:21:28,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:21:28,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1960661089, now seen corresponding path program 1 times [2021-11-25 19:21:28,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:21:28,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157719719] [2021-11-25 19:21:28,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:21:28,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:21:28,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:21:28,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:21:28,374 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:21:28,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157719719] [2021-11-25 19:21:28,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157719719] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:21:28,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:21:28,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 19:21:28,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444961034] [2021-11-25 19:21:28,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:21:28,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:21:28,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:21:28,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:21:28,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:21:28,377 INFO L87 Difference]: Start difference. First operand 322 states and 401 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:28,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:21:28,802 INFO L93 Difference]: Finished difference Result 621 states and 759 transitions. [2021-11-25 19:21:28,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 19:21:28,816 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2021-11-25 19:21:28,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:21:28,819 INFO L225 Difference]: With dead ends: 621 [2021-11-25 19:21:28,819 INFO L226 Difference]: Without dead ends: 462 [2021-11-25 19:21:28,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-11-25 19:21:28,820 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 1120 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:21:28,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1120 Valid, 576 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:21:28,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2021-11-25 19:21:28,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 322. [2021-11-25 19:21:28,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 311 states have (on average 1.2861736334405145) internal successors, (400), 321 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:28,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 400 transitions. [2021-11-25 19:21:28,855 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 400 transitions. Word has length 63 [2021-11-25 19:21:28,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:21:28,856 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 400 transitions. [2021-11-25 19:21:28,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:28,856 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 400 transitions. [2021-11-25 19:21:28,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-25 19:21:28,857 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:21:28,857 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:21:28,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 19:21:28,858 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 19:21:28,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:21:28,858 INFO L85 PathProgramCache]: Analyzing trace with hash 718759200, now seen corresponding path program 1 times [2021-11-25 19:21:28,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:21:28,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885547102] [2021-11-25 19:21:28,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:21:28,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:21:28,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:21:28,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:21:28,970 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:21:28,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885547102] [2021-11-25 19:21:28,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885547102] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:21:28,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:21:28,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 19:21:28,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129020450] [2021-11-25 19:21:28,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:21:28,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 19:21:28,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:21:28,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 19:21:28,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:21:28,973 INFO L87 Difference]: Start difference. First operand 322 states and 400 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:29,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:21:29,681 INFO L93 Difference]: Finished difference Result 712 states and 895 transitions. [2021-11-25 19:21:29,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 19:21:29,682 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2021-11-25 19:21:29,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:21:29,686 INFO L225 Difference]: With dead ends: 712 [2021-11-25 19:21:29,686 INFO L226 Difference]: Without dead ends: 637 [2021-11-25 19:21:29,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 19:21:29,687 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 1208 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1208 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:21:29,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1208 Valid, 805 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:21:29,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2021-11-25 19:21:29,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 322. [2021-11-25 19:21:29,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 311 states have (on average 1.2829581993569132) internal successors, (399), 321 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:29,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 399 transitions. [2021-11-25 19:21:29,727 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 399 transitions. Word has length 64 [2021-11-25 19:21:29,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:21:29,728 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 399 transitions. [2021-11-25 19:21:29,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:29,728 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 399 transitions. [2021-11-25 19:21:29,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-25 19:21:29,732 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:21:29,733 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:21:29,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 19:21:29,733 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 19:21:29,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:21:29,734 INFO L85 PathProgramCache]: Analyzing trace with hash 478712064, now seen corresponding path program 1 times [2021-11-25 19:21:29,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:21:29,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845868179] [2021-11-25 19:21:29,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:21:29,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:21:29,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:21:29,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:21:29,865 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:21:29,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845868179] [2021-11-25 19:21:29,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845868179] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:21:29,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:21:29,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 19:21:29,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066983886] [2021-11-25 19:21:29,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:21:29,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 19:21:29,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:21:29,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 19:21:29,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:21:29,868 INFO L87 Difference]: Start difference. First operand 322 states and 399 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:30,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:21:30,598 INFO L93 Difference]: Finished difference Result 744 states and 943 transitions. [2021-11-25 19:21:30,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 19:21:30,598 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2021-11-25 19:21:30,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:21:30,602 INFO L225 Difference]: With dead ends: 744 [2021-11-25 19:21:30,602 INFO L226 Difference]: Without dead ends: 658 [2021-11-25 19:21:30,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-25 19:21:30,605 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 718 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 864 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 1226 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:21:30,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [718 Valid, 1226 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 864 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 19:21:30,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2021-11-25 19:21:30,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 322. [2021-11-25 19:21:30,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 311 states have (on average 1.279742765273312) internal successors, (398), 321 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:30,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 398 transitions. [2021-11-25 19:21:30,648 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 398 transitions. Word has length 64 [2021-11-25 19:21:30,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:21:30,648 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 398 transitions. [2021-11-25 19:21:30,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:30,649 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 398 transitions. [2021-11-25 19:21:30,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-25 19:21:30,652 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:21:30,652 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:21:30,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 19:21:30,653 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 19:21:30,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:21:30,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1193853636, now seen corresponding path program 1 times [2021-11-25 19:21:30,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:21:30,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246088259] [2021-11-25 19:21:30,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:21:30,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:21:30,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:21:30,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:21:30,809 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:21:30,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246088259] [2021-11-25 19:21:30,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246088259] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:21:30,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:21:30,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 19:21:30,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68479358] [2021-11-25 19:21:30,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:21:30,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 19:21:30,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:21:30,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 19:21:30,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:21:30,811 INFO L87 Difference]: Start difference. First operand 322 states and 398 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:31,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:21:31,530 INFO L93 Difference]: Finished difference Result 677 states and 851 transitions. [2021-11-25 19:21:31,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 19:21:31,531 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2021-11-25 19:21:31,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:21:31,535 INFO L225 Difference]: With dead ends: 677 [2021-11-25 19:21:31,535 INFO L226 Difference]: Without dead ends: 658 [2021-11-25 19:21:31,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-25 19:21:31,536 INFO L933 BasicCegarLoop]: 267 mSDtfsCounter, 705 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:21:31,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [705 Valid, 1251 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 19:21:31,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2021-11-25 19:21:31,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 322. [2021-11-25 19:21:31,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 311 states have (on average 1.2733118971061093) internal successors, (396), 321 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:31,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 396 transitions. [2021-11-25 19:21:31,587 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 396 transitions. Word has length 65 [2021-11-25 19:21:31,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:21:31,587 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 396 transitions. [2021-11-25 19:21:31,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:31,587 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 396 transitions. [2021-11-25 19:21:31,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-25 19:21:31,588 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:21:31,589 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:21:31,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 19:21:31,589 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 19:21:31,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:21:31,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1508275324, now seen corresponding path program 1 times [2021-11-25 19:21:31,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:21:31,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557328068] [2021-11-25 19:21:31,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:21:31,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:21:31,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:21:31,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:21:31,694 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:21:31,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557328068] [2021-11-25 19:21:31,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557328068] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:21:31,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:21:31,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 19:21:31,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098393050] [2021-11-25 19:21:31,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:21:31,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 19:21:31,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:21:31,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 19:21:31,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:21:31,696 INFO L87 Difference]: Start difference. First operand 322 states and 396 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:32,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:21:32,359 INFO L93 Difference]: Finished difference Result 643 states and 797 transitions. [2021-11-25 19:21:32,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 19:21:32,360 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2021-11-25 19:21:32,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:21:32,364 INFO L225 Difference]: With dead ends: 643 [2021-11-25 19:21:32,364 INFO L226 Difference]: Without dead ends: 637 [2021-11-25 19:21:32,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 19:21:32,365 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 1123 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:21:32,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1123 Valid, 924 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:21:32,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2021-11-25 19:21:32,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 322. [2021-11-25 19:21:32,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 311 states have (on average 1.2668810289389068) internal successors, (394), 321 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:32,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 394 transitions. [2021-11-25 19:21:32,409 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 394 transitions. Word has length 65 [2021-11-25 19:21:32,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:21:32,410 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 394 transitions. [2021-11-25 19:21:32,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:32,410 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 394 transitions. [2021-11-25 19:21:32,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-25 19:21:32,411 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:21:32,411 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:21:32,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 19:21:32,412 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 19:21:32,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:21:32,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1207057476, now seen corresponding path program 1 times [2021-11-25 19:21:32,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:21:32,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341433204] [2021-11-25 19:21:32,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:21:32,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:21:32,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:21:32,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:21:32,537 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:21:32,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341433204] [2021-11-25 19:21:32,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341433204] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:21:32,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:21:32,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 19:21:32,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885794355] [2021-11-25 19:21:32,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:21:32,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 19:21:32,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:21:32,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 19:21:32,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:21:32,539 INFO L87 Difference]: Start difference. First operand 322 states and 394 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:33,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:21:33,067 INFO L93 Difference]: Finished difference Result 545 states and 681 transitions. [2021-11-25 19:21:33,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-25 19:21:33,068 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2021-11-25 19:21:33,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:21:33,070 INFO L225 Difference]: With dead ends: 545 [2021-11-25 19:21:33,071 INFO L226 Difference]: Without dead ends: 402 [2021-11-25 19:21:33,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-11-25 19:21:33,072 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 663 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:21:33,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [663 Valid, 800 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:21:33,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2021-11-25 19:21:33,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 322. [2021-11-25 19:21:33,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 311 states have (on average 1.2604501607717042) internal successors, (392), 321 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:33,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 392 transitions. [2021-11-25 19:21:33,116 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 392 transitions. Word has length 65 [2021-11-25 19:21:33,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:21:33,116 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 392 transitions. [2021-11-25 19:21:33,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:33,117 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 392 transitions. [2021-11-25 19:21:33,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-25 19:21:33,118 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:21:33,118 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:21:33,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 19:21:33,118 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 19:21:33,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:21:33,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1230734052, now seen corresponding path program 1 times [2021-11-25 19:21:33,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:21:33,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192712899] [2021-11-25 19:21:33,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:21:33,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:21:33,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:21:33,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:21:33,245 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:21:33,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192712899] [2021-11-25 19:21:33,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192712899] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:21:33,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:21:33,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 19:21:33,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434288482] [2021-11-25 19:21:33,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:21:33,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 19:21:33,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:21:33,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 19:21:33,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:21:33,248 INFO L87 Difference]: Start difference. First operand 322 states and 392 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:33,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:21:33,968 INFO L93 Difference]: Finished difference Result 715 states and 890 transitions. [2021-11-25 19:21:33,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 19:21:33,969 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2021-11-25 19:21:33,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:21:33,973 INFO L225 Difference]: With dead ends: 715 [2021-11-25 19:21:33,973 INFO L226 Difference]: Without dead ends: 637 [2021-11-25 19:21:33,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 19:21:33,975 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 1104 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1104 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:21:33,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1104 Valid, 935 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:21:33,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2021-11-25 19:21:34,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 322. [2021-11-25 19:21:34,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 311 states have (on average 1.257234726688103) internal successors, (391), 321 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:34,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 391 transitions. [2021-11-25 19:21:34,034 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 391 transitions. Word has length 65 [2021-11-25 19:21:34,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:21:34,035 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 391 transitions. [2021-11-25 19:21:34,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:34,035 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 391 transitions. [2021-11-25 19:21:34,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-25 19:21:34,036 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:21:34,037 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:21:34,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-25 19:21:34,038 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 19:21:34,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:21:34,039 INFO L85 PathProgramCache]: Analyzing trace with hash -873801820, now seen corresponding path program 1 times [2021-11-25 19:21:34,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:21:34,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493014133] [2021-11-25 19:21:34,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:21:34,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:21:34,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:21:34,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:21:34,165 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:21:34,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493014133] [2021-11-25 19:21:34,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493014133] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:21:34,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:21:34,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 19:21:34,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003461560] [2021-11-25 19:21:34,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:21:34,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 19:21:34,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:21:34,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 19:21:34,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:21:34,168 INFO L87 Difference]: Start difference. First operand 322 states and 391 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:34,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:21:34,911 INFO L93 Difference]: Finished difference Result 749 states and 940 transitions. [2021-11-25 19:21:34,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 19:21:34,912 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2021-11-25 19:21:34,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:21:34,916 INFO L225 Difference]: With dead ends: 749 [2021-11-25 19:21:34,916 INFO L226 Difference]: Without dead ends: 658 [2021-11-25 19:21:34,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 19:21:34,918 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 1041 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1041 SdHoareTripleChecker+Valid, 1113 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:21:34,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1041 Valid, 1113 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 19:21:34,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2021-11-25 19:21:34,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 322. [2021-11-25 19:21:34,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 311 states have (on average 1.2540192926045015) internal successors, (390), 321 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:34,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 390 transitions. [2021-11-25 19:21:34,979 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 390 transitions. Word has length 65 [2021-11-25 19:21:34,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:21:34,979 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 390 transitions. [2021-11-25 19:21:34,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:34,980 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 390 transitions. [2021-11-25 19:21:34,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-25 19:21:34,981 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:21:34,981 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:21:34,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-25 19:21:34,981 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 19:21:34,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:21:34,982 INFO L85 PathProgramCache]: Analyzing trace with hash 106808155, now seen corresponding path program 1 times [2021-11-25 19:21:34,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:21:34,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193503980] [2021-11-25 19:21:34,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:21:34,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:21:35,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:21:36,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:21:36,110 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:21:36,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193503980] [2021-11-25 19:21:36,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193503980] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:21:36,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:21:36,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-11-25 19:21:36,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031348790] [2021-11-25 19:21:36,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:21:36,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-25 19:21:36,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:21:36,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-25 19:21:36,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-11-25 19:21:36,113 INFO L87 Difference]: Start difference. First operand 322 states and 390 transitions. Second operand has 25 states, 25 states have (on average 2.64) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:39,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:21:39,474 INFO L93 Difference]: Finished difference Result 745 states and 896 transitions. [2021-11-25 19:21:39,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-25 19:21:39,474 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.64) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2021-11-25 19:21:39,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:21:39,478 INFO L225 Difference]: With dead ends: 745 [2021-11-25 19:21:39,478 INFO L226 Difference]: Without dead ends: 672 [2021-11-25 19:21:39,479 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=355, Invalid=1901, Unknown=0, NotChecked=0, Total=2256 [2021-11-25 19:21:39,480 INFO L933 BasicCegarLoop]: 385 mSDtfsCounter, 1635 mSDsluCounter, 5296 mSDsCounter, 0 mSdLazyCounter, 2783 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1635 SdHoareTripleChecker+Valid, 5646 SdHoareTripleChecker+Invalid, 2845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-25 19:21:39,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1635 Valid, 5646 Invalid, 2845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2783 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-25 19:21:39,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2021-11-25 19:21:39,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 321. [2021-11-25 19:21:39,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 310 states have (on average 1.2516129032258065) internal successors, (388), 320 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:39,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 388 transitions. [2021-11-25 19:21:39,540 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 388 transitions. Word has length 66 [2021-11-25 19:21:39,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:21:39,541 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 388 transitions. [2021-11-25 19:21:39,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.64) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:39,541 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 388 transitions. [2021-11-25 19:21:39,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-25 19:21:39,542 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:21:39,542 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:21:39,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-25 19:21:39,543 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 19:21:39,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:21:39,543 INFO L85 PathProgramCache]: Analyzing trace with hash -543233893, now seen corresponding path program 1 times [2021-11-25 19:21:39,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:21:39,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654822685] [2021-11-25 19:21:39,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:21:39,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:21:39,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:21:40,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:21:40,427 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:21:40,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654822685] [2021-11-25 19:21:40,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654822685] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:21:40,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:21:40,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-11-25 19:21:40,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476630484] [2021-11-25 19:21:40,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:21:40,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-25 19:21:40,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:21:40,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-25 19:21:40,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-11-25 19:21:40,429 INFO L87 Difference]: Start difference. First operand 321 states and 388 transitions. Second operand has 25 states, 25 states have (on average 2.64) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:43,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:21:43,908 INFO L93 Difference]: Finished difference Result 801 states and 989 transitions. [2021-11-25 19:21:43,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-25 19:21:43,909 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.64) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2021-11-25 19:21:43,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:21:43,916 INFO L225 Difference]: With dead ends: 801 [2021-11-25 19:21:43,916 INFO L226 Difference]: Without dead ends: 728 [2021-11-25 19:21:43,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=393, Invalid=1959, Unknown=0, NotChecked=0, Total=2352 [2021-11-25 19:21:43,924 INFO L933 BasicCegarLoop]: 552 mSDtfsCounter, 1546 mSDsluCounter, 7318 mSDsCounter, 0 mSdLazyCounter, 3174 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1546 SdHoareTripleChecker+Valid, 7763 SdHoareTripleChecker+Invalid, 3264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 3174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:21:43,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1546 Valid, 7763 Invalid, 3264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 3174 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-25 19:21:43,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2021-11-25 19:21:43,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 332. [2021-11-25 19:21:43,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 321 states have (on average 1.2523364485981308) internal successors, (402), 331 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:43,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 402 transitions. [2021-11-25 19:21:43,984 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 402 transitions. Word has length 66 [2021-11-25 19:21:43,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:21:43,985 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 402 transitions. [2021-11-25 19:21:43,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.64) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:43,985 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 402 transitions. [2021-11-25 19:21:43,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-25 19:21:43,987 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:21:43,987 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:21:43,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-25 19:21:43,987 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 19:21:43,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:21:43,988 INFO L85 PathProgramCache]: Analyzing trace with hash -89752069, now seen corresponding path program 1 times [2021-11-25 19:21:43,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:21:43,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996889776] [2021-11-25 19:21:43,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:21:43,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:21:44,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:21:44,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:21:44,240 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:21:44,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996889776] [2021-11-25 19:21:44,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996889776] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:21:44,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:21:44,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-25 19:21:44,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245929783] [2021-11-25 19:21:44,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:21:44,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 19:21:44,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:21:44,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 19:21:44,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-25 19:21:44,241 INFO L87 Difference]: Start difference. First operand 332 states and 402 transitions. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:44,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:21:44,817 INFO L93 Difference]: Finished difference Result 660 states and 793 transitions. [2021-11-25 19:21:44,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 19:21:44,817 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2021-11-25 19:21:44,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:21:44,820 INFO L225 Difference]: With dead ends: 660 [2021-11-25 19:21:44,820 INFO L226 Difference]: Without dead ends: 507 [2021-11-25 19:21:44,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2021-11-25 19:21:44,823 INFO L933 BasicCegarLoop]: 315 mSDtfsCounter, 1480 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:21:44,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1480 Valid, 977 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:21:44,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2021-11-25 19:21:44,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 251. [2021-11-25 19:21:44,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 244 states have (on average 1.2459016393442623) internal successors, (304), 250 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:44,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 304 transitions. [2021-11-25 19:21:44,900 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 304 transitions. Word has length 66 [2021-11-25 19:21:44,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:21:44,901 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 304 transitions. [2021-11-25 19:21:44,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:44,901 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 304 transitions. [2021-11-25 19:21:44,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-25 19:21:44,902 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:21:44,902 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:21:44,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-25 19:21:44,903 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 19:21:44,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:21:44,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1410161897, now seen corresponding path program 1 times [2021-11-25 19:21:44,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:21:44,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230012911] [2021-11-25 19:21:44,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:21:44,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:21:44,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:21:45,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:21:45,304 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:21:45,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230012911] [2021-11-25 19:21:45,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230012911] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:21:45,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:21:45,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 19:21:45,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430208630] [2021-11-25 19:21:45,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:21:45,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 19:21:45,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:21:45,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 19:21:45,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-25 19:21:45,305 INFO L87 Difference]: Start difference. First operand 251 states and 304 transitions. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:46,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:21:46,267 INFO L93 Difference]: Finished difference Result 669 states and 819 transitions. [2021-11-25 19:21:46,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 19:21:46,267 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2021-11-25 19:21:46,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:21:46,271 INFO L225 Difference]: With dead ends: 669 [2021-11-25 19:21:46,271 INFO L226 Difference]: Without dead ends: 591 [2021-11-25 19:21:46,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2021-11-25 19:21:46,272 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 1285 mSDsluCounter, 1262 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1285 SdHoareTripleChecker+Valid, 1427 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:21:46,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1285 Valid, 1427 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:21:46,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2021-11-25 19:21:46,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 241. [2021-11-25 19:21:46,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 235 states have (on average 1.2297872340425533) internal successors, (289), 240 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:46,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 289 transitions. [2021-11-25 19:21:46,332 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 289 transitions. Word has length 67 [2021-11-25 19:21:46,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:21:46,332 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 289 transitions. [2021-11-25 19:21:46,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:46,333 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 289 transitions. [2021-11-25 19:21:46,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-25 19:21:46,333 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:21:46,334 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:21:46,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-25 19:21:46,334 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 19:21:46,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:21:46,335 INFO L85 PathProgramCache]: Analyzing trace with hash 866774441, now seen corresponding path program 1 times [2021-11-25 19:21:46,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:21:46,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926301199] [2021-11-25 19:21:46,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:21:46,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:21:46,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:21:46,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:21:46,723 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:21:46,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926301199] [2021-11-25 19:21:46,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926301199] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:21:46,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:21:46,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 19:21:46,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444434305] [2021-11-25 19:21:46,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:21:46,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 19:21:46,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:21:46,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 19:21:46,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-25 19:21:46,725 INFO L87 Difference]: Start difference. First operand 241 states and 289 transitions. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:47,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:21:47,819 INFO L93 Difference]: Finished difference Result 591 states and 712 transitions. [2021-11-25 19:21:47,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-25 19:21:47,820 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2021-11-25 19:21:47,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:21:47,823 INFO L225 Difference]: With dead ends: 591 [2021-11-25 19:21:47,823 INFO L226 Difference]: Without dead ends: 587 [2021-11-25 19:21:47,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2021-11-25 19:21:47,824 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 879 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 1654 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:21:47,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [879 Valid, 1654 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:21:47,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2021-11-25 19:21:47,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 237. [2021-11-25 19:21:47,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 232 states have (on average 1.228448275862069) internal successors, (285), 236 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:47,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 285 transitions. [2021-11-25 19:21:47,895 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 285 transitions. Word has length 67 [2021-11-25 19:21:47,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:21:47,895 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 285 transitions. [2021-11-25 19:21:47,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:47,895 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 285 transitions. [2021-11-25 19:21:47,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-25 19:21:47,897 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:21:47,897 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:21:47,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-25 19:21:47,899 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 19:21:47,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:21:47,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1780474025, now seen corresponding path program 1 times [2021-11-25 19:21:47,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:21:47,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661932090] [2021-11-25 19:21:47,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:21:47,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:21:47,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:21:48,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:21:48,484 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:21:48,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661932090] [2021-11-25 19:21:48,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661932090] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:21:48,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:21:48,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-25 19:21:48,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761896124] [2021-11-25 19:21:48,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:21:48,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-25 19:21:48,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:21:48,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-25 19:21:48,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2021-11-25 19:21:48,486 INFO L87 Difference]: Start difference. First operand 237 states and 285 transitions. Second operand has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 21 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:49,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:21:49,694 INFO L93 Difference]: Finished difference Result 263 states and 309 transitions. [2021-11-25 19:21:49,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 19:21:49,694 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 21 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2021-11-25 19:21:49,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:21:49,696 INFO L225 Difference]: With dead ends: 263 [2021-11-25 19:21:49,696 INFO L226 Difference]: Without dead ends: 256 [2021-11-25 19:21:49,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=237, Invalid=1245, Unknown=0, NotChecked=0, Total=1482 [2021-11-25 19:21:49,697 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 553 mSDsluCounter, 1977 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 2098 SdHoareTripleChecker+Invalid, 1170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:21:49,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [553 Valid, 2098 Invalid, 1170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1134 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 19:21:49,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-11-25 19:21:49,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 237. [2021-11-25 19:21:49,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 232 states have (on average 1.2241379310344827) internal successors, (284), 236 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:49,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 284 transitions. [2021-11-25 19:21:49,750 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 284 transitions. Word has length 67 [2021-11-25 19:21:49,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:21:49,750 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 284 transitions. [2021-11-25 19:21:49,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 21 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:49,751 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 284 transitions. [2021-11-25 19:21:49,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-25 19:21:49,751 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:21:49,751 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:21:49,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-25 19:21:49,752 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 19:21:49,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:21:49,752 INFO L85 PathProgramCache]: Analyzing trace with hash -588581152, now seen corresponding path program 1 times [2021-11-25 19:21:49,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:21:49,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625092415] [2021-11-25 19:21:49,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:21:49,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:21:49,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:21:50,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:21:50,262 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:21:50,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625092415] [2021-11-25 19:21:50,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625092415] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:21:50,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:21:50,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-25 19:21:50,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153006156] [2021-11-25 19:21:50,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:21:50,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-25 19:21:50,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:21:50,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-25 19:21:50,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-11-25 19:21:50,263 INFO L87 Difference]: Start difference. First operand 237 states and 284 transitions. Second operand has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 14 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:51,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:21:51,433 INFO L93 Difference]: Finished difference Result 535 states and 645 transitions. [2021-11-25 19:21:51,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-25 19:21:51,433 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 14 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2021-11-25 19:21:51,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:21:51,436 INFO L225 Difference]: With dead ends: 535 [2021-11-25 19:21:51,436 INFO L226 Difference]: Without dead ends: 466 [2021-11-25 19:21:51,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=156, Invalid=600, Unknown=0, NotChecked=0, Total=756 [2021-11-25 19:21:51,440 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 583 mSDsluCounter, 2685 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 2903 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:21:51,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [583 Valid, 2903 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:21:51,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2021-11-25 19:21:51,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 228. [2021-11-25 19:21:51,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 223 states have (on average 1.210762331838565) internal successors, (270), 227 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:51,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 270 transitions. [2021-11-25 19:21:51,515 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 270 transitions. Word has length 67 [2021-11-25 19:21:51,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:21:51,515 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 270 transitions. [2021-11-25 19:21:51,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 14 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:51,516 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 270 transitions. [2021-11-25 19:21:51,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-25 19:21:51,516 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:21:51,517 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:21:51,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-25 19:21:51,517 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 19:21:51,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:21:51,518 INFO L85 PathProgramCache]: Analyzing trace with hash 734420341, now seen corresponding path program 1 times [2021-11-25 19:21:51,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:21:51,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887087971] [2021-11-25 19:21:51,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:21:51,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:21:51,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:21:51,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:21:51,832 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:21:51,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887087971] [2021-11-25 19:21:51,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887087971] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:21:51,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:21:51,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 19:21:51,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47898404] [2021-11-25 19:21:51,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:21:51,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 19:21:51,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:21:51,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 19:21:51,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-25 19:21:51,834 INFO L87 Difference]: Start difference. First operand 228 states and 270 transitions. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:52,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:21:52,629 INFO L93 Difference]: Finished difference Result 379 states and 458 transitions. [2021-11-25 19:21:52,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 19:21:52,630 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2021-11-25 19:21:52,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:21:52,632 INFO L225 Difference]: With dead ends: 379 [2021-11-25 19:21:52,632 INFO L226 Difference]: Without dead ends: 368 [2021-11-25 19:21:52,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2021-11-25 19:21:52,634 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 773 mSDsluCounter, 1314 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:21:52,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [773 Valid, 1523 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:21:52,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2021-11-25 19:21:52,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 217. [2021-11-25 19:21:52,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 213 states have (on average 1.215962441314554) internal successors, (259), 216 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:52,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 259 transitions. [2021-11-25 19:21:52,709 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 259 transitions. Word has length 68 [2021-11-25 19:21:52,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:21:52,710 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 259 transitions. [2021-11-25 19:21:52,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:52,710 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 259 transitions. [2021-11-25 19:21:52,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-25 19:21:52,711 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:21:52,711 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:21:52,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-25 19:21:52,712 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 19:21:52,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:21:52,712 INFO L85 PathProgramCache]: Analyzing trace with hash -2145891223, now seen corresponding path program 1 times [2021-11-25 19:21:52,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:21:52,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267575599] [2021-11-25 19:21:52,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:21:52,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:21:52,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:21:52,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:21:52,818 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:21:52,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267575599] [2021-11-25 19:21:52,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267575599] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:21:52,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:21:52,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 19:21:52,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985631785] [2021-11-25 19:21:52,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:21:52,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 19:21:52,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:21:52,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 19:21:52,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:21:52,821 INFO L87 Difference]: Start difference. First operand 217 states and 259 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:53,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:21:53,201 INFO L93 Difference]: Finished difference Result 353 states and 424 transitions. [2021-11-25 19:21:53,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 19:21:53,202 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2021-11-25 19:21:53,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:21:53,204 INFO L225 Difference]: With dead ends: 353 [2021-11-25 19:21:53,205 INFO L226 Difference]: Without dead ends: 345 [2021-11-25 19:21:53,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-25 19:21:53,206 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 417 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:21:53,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [417 Valid, 518 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:21:53,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-11-25 19:21:53,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 217. [2021-11-25 19:21:53,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 213 states have (on average 1.2112676056338028) internal successors, (258), 216 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:53,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 258 transitions. [2021-11-25 19:21:53,297 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 258 transitions. Word has length 69 [2021-11-25 19:21:53,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:21:53,298 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 258 transitions. [2021-11-25 19:21:53,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:53,298 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 258 transitions. [2021-11-25 19:21:53,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-25 19:21:53,299 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:21:53,299 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:21:53,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-25 19:21:53,299 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 19:21:53,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:21:53,300 INFO L85 PathProgramCache]: Analyzing trace with hash -535879959, now seen corresponding path program 1 times [2021-11-25 19:21:53,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:21:53,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472267738] [2021-11-25 19:21:53,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:21:53,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:21:53,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:21:53,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:21:53,402 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:21:53,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472267738] [2021-11-25 19:21:53,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472267738] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:21:53,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:21:53,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 19:21:53,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961631532] [2021-11-25 19:21:53,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:21:53,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 19:21:53,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:21:53,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 19:21:53,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:21:53,405 INFO L87 Difference]: Start difference. First operand 217 states and 258 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:53,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:21:53,921 INFO L93 Difference]: Finished difference Result 462 states and 567 transitions. [2021-11-25 19:21:53,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-25 19:21:53,922 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2021-11-25 19:21:53,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:21:53,925 INFO L225 Difference]: With dead ends: 462 [2021-11-25 19:21:53,925 INFO L226 Difference]: Without dead ends: 356 [2021-11-25 19:21:53,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2021-11-25 19:21:53,926 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 443 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:21:53,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [443 Valid, 532 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:21:53,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2021-11-25 19:21:53,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 217. [2021-11-25 19:21:53,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 213 states have (on average 1.2018779342723005) internal successors, (256), 216 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:54,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 256 transitions. [2021-11-25 19:21:54,000 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 256 transitions. Word has length 69 [2021-11-25 19:21:54,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:21:54,000 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 256 transitions. [2021-11-25 19:21:54,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:54,001 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 256 transitions. [2021-11-25 19:21:54,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-25 19:21:54,001 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:21:54,001 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:21:54,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-25 19:21:54,002 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 19:21:54,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:21:54,002 INFO L85 PathProgramCache]: Analyzing trace with hash -355243223, now seen corresponding path program 1 times [2021-11-25 19:21:54,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:21:54,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233798242] [2021-11-25 19:21:54,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:21:54,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:21:54,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:21:54,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:21:54,104 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:21:54,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233798242] [2021-11-25 19:21:54,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233798242] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:21:54,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:21:54,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 19:21:54,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339920645] [2021-11-25 19:21:54,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:21:54,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 19:21:54,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:21:54,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 19:21:54,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:21:54,107 INFO L87 Difference]: Start difference. First operand 217 states and 256 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:54,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:21:54,579 INFO L93 Difference]: Finished difference Result 353 states and 421 transitions. [2021-11-25 19:21:54,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-25 19:21:54,579 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2021-11-25 19:21:54,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:21:54,581 INFO L225 Difference]: With dead ends: 353 [2021-11-25 19:21:54,581 INFO L226 Difference]: Without dead ends: 345 [2021-11-25 19:21:54,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-11-25 19:21:54,583 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 364 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:21:54,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [364 Valid, 597 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:21:54,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-11-25 19:21:54,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 217. [2021-11-25 19:21:54,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 213 states have (on average 1.1971830985915493) internal successors, (255), 216 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:54,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 255 transitions. [2021-11-25 19:21:54,662 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 255 transitions. Word has length 69 [2021-11-25 19:21:54,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:21:54,663 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 255 transitions. [2021-11-25 19:21:54,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:54,663 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 255 transitions. [2021-11-25 19:21:54,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-25 19:21:54,664 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:21:54,664 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:21:54,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-25 19:21:54,665 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 19:21:54,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:21:54,665 INFO L85 PathProgramCache]: Analyzing trace with hash 134483598, now seen corresponding path program 1 times [2021-11-25 19:21:54,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:21:54,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710043940] [2021-11-25 19:21:54,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:21:54,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:21:54,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:21:54,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:21:54,994 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:21:54,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710043940] [2021-11-25 19:21:54,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710043940] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:21:54,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:21:54,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 19:21:54,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714105686] [2021-11-25 19:21:54,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:21:54,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 19:21:54,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:21:54,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 19:21:54,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-25 19:21:54,996 INFO L87 Difference]: Start difference. First operand 217 states and 255 transitions. Second operand has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:56,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:21:56,275 INFO L93 Difference]: Finished difference Result 854 states and 1063 transitions. [2021-11-25 19:21:56,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-25 19:21:56,276 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2021-11-25 19:21:56,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:21:56,281 INFO L225 Difference]: With dead ends: 854 [2021-11-25 19:21:56,281 INFO L226 Difference]: Without dead ends: 848 [2021-11-25 19:21:56,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-11-25 19:21:56,282 INFO L933 BasicCegarLoop]: 369 mSDtfsCounter, 997 mSDsluCounter, 2515 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 997 SdHoareTripleChecker+Valid, 2768 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:21:56,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [997 Valid, 2768 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:21:56,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2021-11-25 19:21:56,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 211. [2021-11-25 19:21:56,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 208 states have (on average 1.1923076923076923) internal successors, (248), 210 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:56,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 248 transitions. [2021-11-25 19:21:56,381 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 248 transitions. Word has length 71 [2021-11-25 19:21:56,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:21:56,381 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 248 transitions. [2021-11-25 19:21:56,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:56,381 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 248 transitions. [2021-11-25 19:21:56,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-25 19:21:56,382 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:21:56,382 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:21:56,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-25 19:21:56,385 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 19:21:56,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:21:56,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1292839346, now seen corresponding path program 1 times [2021-11-25 19:21:56,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:21:56,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792356150] [2021-11-25 19:21:56,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:21:56,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:21:56,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:21:56,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:21:56,906 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:21:56,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792356150] [2021-11-25 19:21:56,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792356150] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:21:56,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:21:56,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-25 19:21:56,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340390817] [2021-11-25 19:21:56,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:21:56,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-25 19:21:56,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:21:56,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-25 19:21:56,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2021-11-25 19:21:56,908 INFO L87 Difference]: Start difference. First operand 211 states and 248 transitions. Second operand has 21 states, 21 states have (on average 3.380952380952381) internal successors, (71), 21 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:58,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:21:58,036 INFO L93 Difference]: Finished difference Result 248 states and 286 transitions. [2021-11-25 19:21:58,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-25 19:21:58,037 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.380952380952381) internal successors, (71), 21 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2021-11-25 19:21:58,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:21:58,038 INFO L225 Difference]: With dead ends: 248 [2021-11-25 19:21:58,038 INFO L226 Difference]: Without dead ends: 239 [2021-11-25 19:21:58,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=230, Invalid=1176, Unknown=0, NotChecked=0, Total=1406 [2021-11-25 19:21:58,040 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 351 mSDsluCounter, 1552 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 1643 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:21:58,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [351 Valid, 1643 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 948 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 19:21:58,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-11-25 19:21:58,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 221. [2021-11-25 19:21:58,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 218 states have (on average 1.1926605504587156) internal successors, (260), 220 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:58,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 260 transitions. [2021-11-25 19:21:58,122 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 260 transitions. Word has length 71 [2021-11-25 19:21:58,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:21:58,123 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 260 transitions. [2021-11-25 19:21:58,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.380952380952381) internal successors, (71), 21 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:58,123 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 260 transitions. [2021-11-25 19:21:58,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-25 19:21:58,123 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:21:58,123 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:21:58,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-25 19:21:58,124 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 19:21:58,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:21:58,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1532953358, now seen corresponding path program 1 times [2021-11-25 19:21:58,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:21:58,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085830273] [2021-11-25 19:21:58,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:21:58,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:21:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:21:58,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:21:58,603 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:21:58,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085830273] [2021-11-25 19:21:58,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085830273] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:21:58,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:21:58,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-25 19:21:58,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690545476] [2021-11-25 19:21:58,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:21:58,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-25 19:21:58,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:21:58,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-25 19:21:58,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2021-11-25 19:21:58,605 INFO L87 Difference]: Start difference. First operand 221 states and 260 transitions. Second operand has 21 states, 21 states have (on average 3.380952380952381) internal successors, (71), 21 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:59,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:21:59,670 INFO L93 Difference]: Finished difference Result 246 states and 284 transitions. [2021-11-25 19:21:59,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-25 19:21:59,671 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.380952380952381) internal successors, (71), 21 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2021-11-25 19:21:59,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:21:59,672 INFO L225 Difference]: With dead ends: 246 [2021-11-25 19:21:59,672 INFO L226 Difference]: Without dead ends: 237 [2021-11-25 19:21:59,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=247, Invalid=1159, Unknown=0, NotChecked=0, Total=1406 [2021-11-25 19:21:59,673 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 398 mSDsluCounter, 1342 mSDsCounter, 0 mSdLazyCounter, 827 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 1441 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:21:59,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [398 Valid, 1441 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 827 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:21:59,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-11-25 19:21:59,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 227. [2021-11-25 19:21:59,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 224 states have (on average 1.1875) internal successors, (266), 226 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:59,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 266 transitions. [2021-11-25 19:21:59,755 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 266 transitions. Word has length 71 [2021-11-25 19:21:59,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:21:59,755 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 266 transitions. [2021-11-25 19:21:59,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.380952380952381) internal successors, (71), 21 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:21:59,756 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 266 transitions. [2021-11-25 19:21:59,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-25 19:21:59,757 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:21:59,757 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:21:59,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-25 19:21:59,757 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 19:21:59,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:21:59,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1313186703, now seen corresponding path program 1 times [2021-11-25 19:21:59,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:21:59,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175730701] [2021-11-25 19:21:59,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:21:59,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:21:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:22:00,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:22:00,053 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:22:00,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175730701] [2021-11-25 19:22:00,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175730701] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:22:00,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:22:00,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 19:22:00,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462198919] [2021-11-25 19:22:00,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:22:00,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 19:22:00,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:22:00,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 19:22:00,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-25 19:22:00,055 INFO L87 Difference]: Start difference. First operand 227 states and 266 transitions. Second operand has 12 states, 12 states have (on average 6.0) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:22:00,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:22:00,747 INFO L93 Difference]: Finished difference Result 540 states and 665 transitions. [2021-11-25 19:22:00,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 19:22:00,747 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2021-11-25 19:22:00,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:22:00,750 INFO L225 Difference]: With dead ends: 540 [2021-11-25 19:22:00,750 INFO L226 Difference]: Without dead ends: 524 [2021-11-25 19:22:00,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-25 19:22:00,751 INFO L933 BasicCegarLoop]: 304 mSDtfsCounter, 824 mSDsluCounter, 1322 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 1572 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:22:00,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [824 Valid, 1572 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:22:00,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2021-11-25 19:22:00,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 204. [2021-11-25 19:22:00,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 202 states have (on average 1.183168316831683) internal successors, (239), 203 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:22:00,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 239 transitions. [2021-11-25 19:22:00,839 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 239 transitions. Word has length 72 [2021-11-25 19:22:00,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:22:00,840 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 239 transitions. [2021-11-25 19:22:00,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:22:00,840 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 239 transitions. [2021-11-25 19:22:00,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-25 19:22:00,841 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:22:00,841 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:22:00,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-25 19:22:00,841 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 19:22:00,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:22:00,842 INFO L85 PathProgramCache]: Analyzing trace with hash 387040673, now seen corresponding path program 1 times [2021-11-25 19:22:00,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:22:00,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956024786] [2021-11-25 19:22:00,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:22:00,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:22:00,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:22:01,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:22:01,114 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:22:01,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956024786] [2021-11-25 19:22:01,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956024786] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:22:01,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:22:01,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 19:22:01,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587830754] [2021-11-25 19:22:01,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:22:01,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 19:22:01,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:22:01,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 19:22:01,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-25 19:22:01,116 INFO L87 Difference]: Start difference. First operand 204 states and 239 transitions. Second operand has 12 states, 12 states have (on average 6.0) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:22:01,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:22:01,567 INFO L93 Difference]: Finished difference Result 320 states and 385 transitions. [2021-11-25 19:22:01,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 19:22:01,568 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2021-11-25 19:22:01,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:22:01,569 INFO L225 Difference]: With dead ends: 320 [2021-11-25 19:22:01,569 INFO L226 Difference]: Without dead ends: 294 [2021-11-25 19:22:01,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2021-11-25 19:22:01,570 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 498 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:22:01,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [498 Valid, 1033 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:22:01,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-11-25 19:22:01,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 178. [2021-11-25 19:22:01,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 1.192090395480226) internal successors, (211), 177 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:22:01,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 211 transitions. [2021-11-25 19:22:01,648 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 211 transitions. Word has length 72 [2021-11-25 19:22:01,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:22:01,648 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 211 transitions. [2021-11-25 19:22:01,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:22:01,649 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 211 transitions. [2021-11-25 19:22:01,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-25 19:22:01,650 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:22:01,650 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:22:01,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-25 19:22:01,650 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 19:22:01,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:22:01,651 INFO L85 PathProgramCache]: Analyzing trace with hash 446361262, now seen corresponding path program 1 times [2021-11-25 19:22:01,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:22:01,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484446931] [2021-11-25 19:22:01,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:22:01,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:22:01,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:22:01,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:22:01,701 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:22:01,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484446931] [2021-11-25 19:22:01,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484446931] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:22:01,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:22:01,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:22:01,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094791798] [2021-11-25 19:22:01,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:22:01,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:22:01,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:22:01,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:22:01,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:22:01,704 INFO L87 Difference]: Start difference. First operand 178 states and 211 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:22:01,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:22:01,833 INFO L93 Difference]: Finished difference Result 259 states and 318 transitions. [2021-11-25 19:22:01,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:22:01,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-25 19:22:01,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:22:01,835 INFO L225 Difference]: With dead ends: 259 [2021-11-25 19:22:01,835 INFO L226 Difference]: Without dead ends: 222 [2021-11-25 19:22:01,835 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:22:01,836 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 54 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:22:01,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 245 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:22:01,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-11-25 19:22:01,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 212. [2021-11-25 19:22:01,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 1.2085308056872037) internal successors, (255), 211 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:22:01,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 255 transitions. [2021-11-25 19:22:01,931 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 255 transitions. Word has length 87 [2021-11-25 19:22:01,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:22:01,931 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 255 transitions. [2021-11-25 19:22:01,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:22:01,931 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 255 transitions. [2021-11-25 19:22:01,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-25 19:22:01,931 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:22:01,932 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:22:01,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-25 19:22:01,932 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 19:22:01,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:22:01,933 INFO L85 PathProgramCache]: Analyzing trace with hash -881091478, now seen corresponding path program 1 times [2021-11-25 19:22:01,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:22:01,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219317459] [2021-11-25 19:22:01,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:22:01,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:22:01,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:22:01,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:22:01,986 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:22:01,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219317459] [2021-11-25 19:22:01,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219317459] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:22:01,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:22:01,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:22:01,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655041492] [2021-11-25 19:22:01,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:22:01,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:22:01,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:22:01,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:22:01,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:22:01,989 INFO L87 Difference]: Start difference. First operand 212 states and 255 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:22:02,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:22:02,203 INFO L93 Difference]: Finished difference Result 418 states and 529 transitions. [2021-11-25 19:22:02,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:22:02,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-25 19:22:02,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:22:02,205 INFO L225 Difference]: With dead ends: 418 [2021-11-25 19:22:02,206 INFO L226 Difference]: Without dead ends: 315 [2021-11-25 19:22:02,206 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:22:02,207 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 47 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:22:02,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 246 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:22:02,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-11-25 19:22:02,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 301. [2021-11-25 19:22:02,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 300 states have (on average 1.2433333333333334) internal successors, (373), 300 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:22:02,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 373 transitions. [2021-11-25 19:22:02,361 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 373 transitions. Word has length 90 [2021-11-25 19:22:02,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:22:02,361 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 373 transitions. [2021-11-25 19:22:02,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:22:02,362 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 373 transitions. [2021-11-25 19:22:02,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-25 19:22:02,362 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:22:02,363 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:22:02,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-25 19:22:02,363 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 19:22:02,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:22:02,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1789183430, now seen corresponding path program 1 times [2021-11-25 19:22:02,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:22:02,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136766646] [2021-11-25 19:22:02,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:22:02,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:22:02,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:22:02,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:22:02,419 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:22:02,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136766646] [2021-11-25 19:22:02,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136766646] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:22:02,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:22:02,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:22:02,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313825710] [2021-11-25 19:22:02,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:22:02,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:22:02,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:22:02,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:22:02,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:22:02,421 INFO L87 Difference]: Start difference. First operand 301 states and 373 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:22:02,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:22:02,689 INFO L93 Difference]: Finished difference Result 685 states and 883 transitions. [2021-11-25 19:22:02,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:22:02,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-11-25 19:22:02,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:22:02,691 INFO L225 Difference]: With dead ends: 685 [2021-11-25 19:22:02,692 INFO L226 Difference]: Without dead ends: 493 [2021-11-25 19:22:02,692 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:22:02,693 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 40 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:22:02,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 247 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:22:02,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2021-11-25 19:22:02,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 467. [2021-11-25 19:22:02,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 466 states have (on average 1.2682403433476395) internal successors, (591), 466 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:22:02,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 591 transitions. [2021-11-25 19:22:02,915 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 591 transitions. Word has length 93 [2021-11-25 19:22:02,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:22:02,915 INFO L470 AbstractCegarLoop]: Abstraction has 467 states and 591 transitions. [2021-11-25 19:22:02,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:22:02,916 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 591 transitions. [2021-11-25 19:22:02,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-25 19:22:02,917 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:22:02,917 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:22:02,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-25 19:22:02,917 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 19:22:02,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:22:02,918 INFO L85 PathProgramCache]: Analyzing trace with hash 428501499, now seen corresponding path program 1 times [2021-11-25 19:22:02,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:22:02,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255326586] [2021-11-25 19:22:02,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:22:02,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:22:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:22:02,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:22:02,971 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:22:02,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255326586] [2021-11-25 19:22:02,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255326586] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:22:02,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:22:02,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:22:02,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800307455] [2021-11-25 19:22:02,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:22:02,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:22:02,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:22:02,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:22:02,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:22:02,973 INFO L87 Difference]: Start difference. First operand 467 states and 591 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:22:03,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:22:03,545 INFO L93 Difference]: Finished difference Result 1183 states and 1537 transitions. [2021-11-25 19:22:03,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:22:03,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2021-11-25 19:22:03,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:22:03,549 INFO L225 Difference]: With dead ends: 1183 [2021-11-25 19:22:03,549 INFO L226 Difference]: Without dead ends: 825 [2021-11-25 19:22:03,550 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:22:03,550 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 30 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:22:03,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 248 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:22:03,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2021-11-25 19:22:03,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 775. [2021-11-25 19:22:03,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 774 states have (on average 1.2803617571059431) internal successors, (991), 774 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:22:03,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 991 transitions. [2021-11-25 19:22:03,961 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 991 transitions. Word has length 96 [2021-11-25 19:22:03,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:22:03,962 INFO L470 AbstractCegarLoop]: Abstraction has 775 states and 991 transitions. [2021-11-25 19:22:03,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:22:03,962 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 991 transitions. [2021-11-25 19:22:03,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-25 19:22:03,963 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:22:03,963 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:22:03,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-25 19:22:03,964 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 19:22:03,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:22:03,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1002635342, now seen corresponding path program 1 times [2021-11-25 19:22:03,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:22:03,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546972484] [2021-11-25 19:22:03,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:22:03,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:22:03,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:22:04,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:22:04,040 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:22:04,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546972484] [2021-11-25 19:22:04,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546972484] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:22:04,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:22:04,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 19:22:04,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417579853] [2021-11-25 19:22:04,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:22:04,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:22:04,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:22:04,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:22:04,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:22:04,042 INFO L87 Difference]: Start difference. First operand 775 states and 991 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:22:05,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:22:05,345 INFO L93 Difference]: Finished difference Result 2953 states and 3833 transitions. [2021-11-25 19:22:05,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 19:22:05,346 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-11-25 19:22:05,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:22:05,355 INFO L225 Difference]: With dead ends: 2953 [2021-11-25 19:22:05,355 INFO L226 Difference]: Without dead ends: 2287 [2021-11-25 19:22:05,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-25 19:22:05,356 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 538 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:22:05,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [538 Valid, 784 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:22:05,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2287 states. [2021-11-25 19:22:06,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2287 to 1153. [2021-11-25 19:22:06,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 1152 states have (on average 1.2717013888888888) internal successors, (1465), 1152 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:22:06,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1465 transitions. [2021-11-25 19:22:06,063 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1465 transitions. Word has length 99 [2021-11-25 19:22:06,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:22:06,063 INFO L470 AbstractCegarLoop]: Abstraction has 1153 states and 1465 transitions. [2021-11-25 19:22:06,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:22:06,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1465 transitions. [2021-11-25 19:22:06,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-25 19:22:06,064 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:22:06,065 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:22:06,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-25 19:22:06,066 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 19:22:06,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:22:06,067 INFO L85 PathProgramCache]: Analyzing trace with hash 487787018, now seen corresponding path program 1 times [2021-11-25 19:22:06,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:22:06,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188506519] [2021-11-25 19:22:06,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:22:06,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:22:06,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:22:06,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:22:06,206 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:22:06,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188506519] [2021-11-25 19:22:06,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188506519] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:22:06,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:22:06,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 19:22:06,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981202436] [2021-11-25 19:22:06,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:22:06,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:22:06,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:22:06,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:22:06,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:22:06,209 INFO L87 Difference]: Start difference. First operand 1153 states and 1465 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:22:06,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:22:06,899 INFO L93 Difference]: Finished difference Result 2199 states and 2813 transitions. [2021-11-25 19:22:06,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:22:06,900 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2021-11-25 19:22:06,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:22:06,904 INFO L225 Difference]: With dead ends: 2199 [2021-11-25 19:22:06,904 INFO L226 Difference]: Without dead ends: 1155 [2021-11-25 19:22:06,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:22:06,906 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 342 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:22:06,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [342 Valid, 257 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:22:06,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2021-11-25 19:22:07,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1153. [2021-11-25 19:22:07,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 1152 states have (on average 1.2699652777777777) internal successors, (1463), 1152 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:22:07,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1463 transitions. [2021-11-25 19:22:07,553 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1463 transitions. Word has length 101 [2021-11-25 19:22:07,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:22:07,554 INFO L470 AbstractCegarLoop]: Abstraction has 1153 states and 1463 transitions. [2021-11-25 19:22:07,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:22:07,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1463 transitions. [2021-11-25 19:22:07,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-25 19:22:07,555 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:22:07,555 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:22:07,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-25 19:22:07,555 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 19:22:07,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:22:07,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1841004069, now seen corresponding path program 1 times [2021-11-25 19:22:07,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:22:07,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497757146] [2021-11-25 19:22:07,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:22:07,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:22:07,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:22:07,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:22:07,604 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:22:07,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497757146] [2021-11-25 19:22:07,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497757146] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:22:07,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:22:07,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:22:07,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923541730] [2021-11-25 19:22:07,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:22:07,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:22:07,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:22:07,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:22:07,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:22:07,607 INFO L87 Difference]: Start difference. First operand 1153 states and 1463 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:22:08,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:22:08,519 INFO L93 Difference]: Finished difference Result 2463 states and 3153 transitions. [2021-11-25 19:22:08,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:22:08,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2021-11-25 19:22:08,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:22:08,525 INFO L225 Difference]: With dead ends: 2463 [2021-11-25 19:22:08,525 INFO L226 Difference]: Without dead ends: 1419 [2021-11-25 19:22:08,527 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:22:08,528 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 65 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:22:08,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 194 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:22:08,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2021-11-25 19:22:09,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 1417. [2021-11-25 19:22:09,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1417 states, 1416 states have (on average 1.2634180790960452) internal successors, (1789), 1416 states have internal predecessors, (1789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:22:09,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 1789 transitions. [2021-11-25 19:22:09,302 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 1789 transitions. Word has length 101 [2021-11-25 19:22:09,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:22:09,302 INFO L470 AbstractCegarLoop]: Abstraction has 1417 states and 1789 transitions. [2021-11-25 19:22:09,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:22:09,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 1789 transitions. [2021-11-25 19:22:09,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-25 19:22:09,303 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:22:09,303 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:22:09,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-25 19:22:09,303 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 19:22:09,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:22:09,304 INFO L85 PathProgramCache]: Analyzing trace with hash -471715223, now seen corresponding path program 1 times [2021-11-25 19:22:09,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:22:09,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015682805] [2021-11-25 19:22:09,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:22:09,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:22:09,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:22:09,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:22:09,398 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:22:09,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015682805] [2021-11-25 19:22:09,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015682805] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:22:09,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:22:09,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 19:22:09,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656326520] [2021-11-25 19:22:09,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:22:09,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:22:09,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:22:09,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:22:09,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:22:09,401 INFO L87 Difference]: Start difference. First operand 1417 states and 1789 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:22:10,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:22:10,902 INFO L93 Difference]: Finished difference Result 1908 states and 2383 transitions. [2021-11-25 19:22:10,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 19:22:10,902 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-11-25 19:22:10,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:22:10,910 INFO L225 Difference]: With dead ends: 1908 [2021-11-25 19:22:10,910 INFO L226 Difference]: Without dead ends: 1906 [2021-11-25 19:22:10,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-11-25 19:22:10,911 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 274 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:22:10,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 789 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:22:10,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1906 states. [2021-11-25 19:22:11,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1906 to 1417. [2021-11-25 19:22:11,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1417 states, 1416 states have (on average 1.2464689265536724) internal successors, (1765), 1416 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:22:11,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 1765 transitions. [2021-11-25 19:22:11,685 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 1765 transitions. Word has length 102 [2021-11-25 19:22:11,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:22:11,685 INFO L470 AbstractCegarLoop]: Abstraction has 1417 states and 1765 transitions. [2021-11-25 19:22:11,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:22:11,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 1765 transitions. [2021-11-25 19:22:11,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-25 19:22:11,687 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:22:11,687 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:22:11,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-25 19:22:11,688 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 19:22:11,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:22:11,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1908392042, now seen corresponding path program 1 times [2021-11-25 19:22:11,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:22:11,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927791064] [2021-11-25 19:22:11,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:22:11,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:22:11,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:22:11,815 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-25 19:22:11,815 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:22:11,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927791064] [2021-11-25 19:22:11,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927791064] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:22:11,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:22:11,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 19:22:11,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681970088] [2021-11-25 19:22:11,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:22:11,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 19:22:11,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:22:11,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 19:22:11,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:22:11,817 INFO L87 Difference]: Start difference. First operand 1417 states and 1765 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:22:13,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:22:13,450 INFO L93 Difference]: Finished difference Result 3550 states and 4437 transitions. [2021-11-25 19:22:13,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-25 19:22:13,451 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 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 [2021-11-25 19:22:13,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:22:13,460 INFO L225 Difference]: With dead ends: 3550 [2021-11-25 19:22:13,460 INFO L226 Difference]: Without dead ends: 2225 [2021-11-25 19:22:13,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2021-11-25 19:22:13,462 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 322 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:22:13,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 356 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:22:13,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2225 states. [2021-11-25 19:22:14,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2225 to 1417. [2021-11-25 19:22:14,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1417 states, 1416 states have (on average 1.2450564971751412) internal successors, (1763), 1416 states have internal predecessors, (1763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:22:14,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 1763 transitions. [2021-11-25 19:22:14,226 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 1763 transitions. Word has length 118 [2021-11-25 19:22:14,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:22:14,226 INFO L470 AbstractCegarLoop]: Abstraction has 1417 states and 1763 transitions. [2021-11-25 19:22:14,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:22:14,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 1763 transitions. [2021-11-25 19:22:14,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-25 19:22:14,227 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:22:14,228 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:22:14,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-25 19:22:14,228 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 19:22:14,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:22:14,228 INFO L85 PathProgramCache]: Analyzing trace with hash 501926341, now seen corresponding path program 1 times [2021-11-25 19:22:14,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:22:14,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549639654] [2021-11-25 19:22:14,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:22:14,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:22:14,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:22:14,694 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-25 19:22:14,694 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:22:14,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549639654] [2021-11-25 19:22:14,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549639654] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:22:14,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:22:14,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-25 19:22:14,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337406922] [2021-11-25 19:22:14,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:22:14,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-25 19:22:14,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:22:14,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-25 19:22:14,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2021-11-25 19:22:14,696 INFO L87 Difference]: Start difference. First operand 1417 states and 1763 transitions. Second operand has 21 states, 21 states have (on average 5.285714285714286) internal successors, (111), 21 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:22:17,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:22:17,006 INFO L93 Difference]: Finished difference Result 4073 states and 5099 transitions. [2021-11-25 19:22:17,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-25 19:22:17,006 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.285714285714286) internal successors, (111), 21 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-11-25 19:22:17,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:22:17,019 INFO L225 Difference]: With dead ends: 4073 [2021-11-25 19:22:17,019 INFO L226 Difference]: Without dead ends: 2754 [2021-11-25 19:22:17,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=230, Invalid=1176, Unknown=0, NotChecked=0, Total=1406 [2021-11-25 19:22:17,023 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 428 mSDsluCounter, 1160 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 1225 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:22:17,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [428 Valid, 1225 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:22:17,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2754 states. [2021-11-25 19:22:17,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2754 to 1429. [2021-11-25 19:22:17,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1429 states, 1428 states have (on average 1.2436974789915967) internal successors, (1776), 1428 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:22:17,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1429 states to 1429 states and 1776 transitions. [2021-11-25 19:22:17,801 INFO L78 Accepts]: Start accepts. Automaton has 1429 states and 1776 transitions. Word has length 120 [2021-11-25 19:22:17,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:22:17,802 INFO L470 AbstractCegarLoop]: Abstraction has 1429 states and 1776 transitions. [2021-11-25 19:22:17,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.285714285714286) internal successors, (111), 21 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:22:17,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1429 states and 1776 transitions. [2021-11-25 19:22:17,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-25 19:22:17,803 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:22:17,804 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:22:17,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-25 19:22:17,804 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 19:22:17,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:22:17,804 INFO L85 PathProgramCache]: Analyzing trace with hash -460992153, now seen corresponding path program 1 times [2021-11-25 19:22:17,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:22:17,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814532500] [2021-11-25 19:22:17,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:22:17,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:22:17,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:22:21,194 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:22:21,194 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:22:21,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814532500] [2021-11-25 19:22:21,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814532500] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:22:21,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929870873] [2021-11-25 19:22:21,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:22:21,195 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:22:21,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5542392f-d93a-4c1d-a886-9581d777d078/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:22:21,196 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5542392f-d93a-4c1d-a886-9581d777d078/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:22:21,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5542392f-d93a-4c1d-a886-9581d777d078/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:22:21,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:22:21,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 681 conjuncts, 76 conjunts are in the unsatisfiable core [2021-11-25 19:22:21,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:22:36,514 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:22:36,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:27:38,378 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:27:38,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929870873] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:27:38,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [853743280] [2021-11-25 19:27:38,408 INFO L159 IcfgInterpreter]: Started Sifa with 107 locations of interest [2021-11-25 19:27:38,409 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:27:38,414 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:27:38,420 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:27:38,420 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:27:43,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:27:43,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:27:43,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:27:43,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:27:43,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:27:43,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:27:43,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 12 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21 [2021-11-25 19:27:43,114 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:27:43,115 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:27:43,115 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:27:43,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21 [2021-11-25 19:30:44,311 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:31:02,890 WARN L227 SmtUtils]: Spent 11.13s on a formula simplification. DAG size of input: 411 DAG size of output: 403 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:33:35,865 WARN L227 SmtUtils]: Spent 6.29s on a formula simplification. DAG size of input: 677 DAG size of output: 380 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)