./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_166a69d1-545b-4b5b-bc40-30179cf8f9d9/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_166a69d1-545b-4b5b-bc40-30179cf8f9d9/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_166a69d1-545b-4b5b-bc40-30179cf8f9d9/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_166a69d1-545b-4b5b-bc40-30179cf8f9d9/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_166a69d1-545b-4b5b-bc40-30179cf8f9d9/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_166a69d1-545b-4b5b-bc40-30179cf8f9d9/bin/utaipan-UbGMyvGFUs --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 755ab1a46ae9bd419f57fa80d8e9c25878a5804529700435e5fe8941ed66455d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:23:06,597 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:23:06,599 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:23:06,634 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:23:06,634 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:23:06,636 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:23:06,638 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:23:06,640 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:23:06,643 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:23:06,644 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:23:06,645 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:23:06,647 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:23:06,648 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:23:06,649 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:23:06,651 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:23:06,653 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:23:06,654 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:23:06,655 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:23:06,658 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:23:06,660 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:23:06,662 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:23:06,664 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:23:06,666 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:23:06,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:23:06,671 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:23:06,671 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:23:06,672 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:23:06,673 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:23:06,674 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:23:06,675 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:23:06,675 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:23:06,676 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:23:06,677 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:23:06,678 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:23:06,680 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:23:06,680 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:23:06,681 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:23:06,681 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:23:06,681 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:23:06,682 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:23:06,683 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:23:06,684 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_166a69d1-545b-4b5b-bc40-30179cf8f9d9/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 13:23:06,710 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:23:06,711 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:23:06,712 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:23:06,712 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:23:06,712 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:23:06,712 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:23:06,713 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:23:06,713 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:23:06,713 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:23:06,713 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:23:06,713 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:23:06,714 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:23:06,714 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:23:06,714 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:23:06,714 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:23:06,715 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:23:06,715 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:23:06,716 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:23:06,716 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:23:06,716 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:23:06,716 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:23:06,717 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:23:06,717 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:23:06,717 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:23:06,717 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:23:06,718 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:23:06,718 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:23:06,718 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:23:06,718 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:23:06,718 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:23:06,719 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:23:06,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:23:06,719 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:23:06,719 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:23:06,720 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:23:06,720 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:23:06,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:23:06,720 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:23:06,721 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:23:06,721 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:23:06,721 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_166a69d1-545b-4b5b-bc40-30179cf8f9d9/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_166a69d1-545b-4b5b-bc40-30179cf8f9d9/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 755ab1a46ae9bd419f57fa80d8e9c25878a5804529700435e5fe8941ed66455d [2021-11-19 13:23:06,991 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:23:07,020 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:23:07,024 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:23:07,025 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:23:07,026 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:23:07,028 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_166a69d1-545b-4b5b-bc40-30179cf8f9d9/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2021-11-19 13:23:07,125 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_166a69d1-545b-4b5b-bc40-30179cf8f9d9/bin/utaipan-UbGMyvGFUs/data/38e7f2f96/f61ab81bcba84f6dbc6b1647d136fa84/FLAG602f475d8 [2021-11-19 13:23:08,032 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:23:08,033 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_166a69d1-545b-4b5b-bc40-30179cf8f9d9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2021-11-19 13:23:08,075 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_166a69d1-545b-4b5b-bc40-30179cf8f9d9/bin/utaipan-UbGMyvGFUs/data/38e7f2f96/f61ab81bcba84f6dbc6b1647d136fa84/FLAG602f475d8 [2021-11-19 13:23:08,522 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_166a69d1-545b-4b5b-bc40-30179cf8f9d9/bin/utaipan-UbGMyvGFUs/data/38e7f2f96/f61ab81bcba84f6dbc6b1647d136fa84 [2021-11-19 13:23:08,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:23:08,527 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:23:08,534 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:23:08,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:23:08,536 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:23:08,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:23:08" (1/1) ... [2021-11-19 13:23:08,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a2181a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:23:08, skipping insertion in model container [2021-11-19 13:23:08,539 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:23:08" (1/1) ... [2021-11-19 13:23:08,547 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:23:08,748 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:23:09,403 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_166a69d1-545b-4b5b-bc40-30179cf8f9d9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[14256,14269] [2021-11-19 13:23:09,484 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_166a69d1-545b-4b5b-bc40-30179cf8f9d9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[20101,20114] [2021-11-19 13:23:09,518 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_166a69d1-545b-4b5b-bc40-30179cf8f9d9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[21333,21346] [2021-11-19 13:23:09,549 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_166a69d1-545b-4b5b-bc40-30179cf8f9d9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[23565,23578] [2021-11-19 13:23:09,592 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_166a69d1-545b-4b5b-bc40-30179cf8f9d9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[26974,26987] [2021-11-19 13:23:09,644 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_166a69d1-545b-4b5b-bc40-30179cf8f9d9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[33563,33576] [2021-11-19 13:23:10,480 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:23:10,505 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:23:10,643 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_166a69d1-545b-4b5b-bc40-30179cf8f9d9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[14256,14269] [2021-11-19 13:23:10,708 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_166a69d1-545b-4b5b-bc40-30179cf8f9d9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[20101,20114] [2021-11-19 13:23:10,730 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_166a69d1-545b-4b5b-bc40-30179cf8f9d9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[21333,21346] [2021-11-19 13:23:10,768 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_166a69d1-545b-4b5b-bc40-30179cf8f9d9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[23565,23578] [2021-11-19 13:23:10,821 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_166a69d1-545b-4b5b-bc40-30179cf8f9d9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[26974,26987] [2021-11-19 13:23:10,881 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_166a69d1-545b-4b5b-bc40-30179cf8f9d9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[33563,33576] [2021-11-19 13:23:11,418 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:23:11,455 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:23:11,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:23:11 WrapperNode [2021-11-19 13:23:11,455 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:23:11,457 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:23:11,457 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:23:11,458 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:23:11,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:23:11" (1/1) ... [2021-11-19 13:23:11,558 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:23:11" (1/1) ... [2021-11-19 13:23:11,728 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 9273 [2021-11-19 13:23:11,729 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:23:11,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:23:11,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:23:11,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:23:11,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:23:11" (1/1) ... [2021-11-19 13:23:11,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:23:11" (1/1) ... [2021-11-19 13:23:11,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:23:11" (1/1) ... [2021-11-19 13:23:11,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:23:11" (1/1) ... [2021-11-19 13:23:11,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:23:11" (1/1) ... [2021-11-19 13:23:11,905 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:23:11" (1/1) ... [2021-11-19 13:23:11,921 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:23:11" (1/1) ... [2021-11-19 13:23:11,950 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:23:11,951 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:23:11,951 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:23:11,951 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:23:11,952 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:23:11" (1/1) ... [2021-11-19 13:23:11,963 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:23:11,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_166a69d1-545b-4b5b-bc40-30179cf8f9d9/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:23:11,994 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_166a69d1-545b-4b5b-bc40-30179cf8f9d9/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:23:12,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_166a69d1-545b-4b5b-bc40-30179cf8f9d9/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:23:12,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:23:12,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 13:23:12,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:23:12,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:23:12,739 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:23:12,741 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:23:16,743 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:23:17,499 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:23:17,499 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 13:23:17,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:23:17 BoogieIcfgContainer [2021-11-19 13:23:17,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:23:17,508 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:23:17,508 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:23:17,514 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:23:17,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:23:08" (1/3) ... [2021-11-19 13:23:17,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56c860e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:23:17, skipping insertion in model container [2021-11-19 13:23:17,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:23:11" (2/3) ... [2021-11-19 13:23:17,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56c860e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:23:17, skipping insertion in model container [2021-11-19 13:23:17,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:23:17" (3/3) ... [2021-11-19 13:23:17,519 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2021-11-19 13:23:17,526 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:23:17,526 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-19 13:23:17,592 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:23:17,599 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 [2021-11-19 13:23:17,599 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-19 13:23:17,657 INFO L276 IsEmpty]: Start isEmpty. Operand has 1704 states, 1697 states have (on average 1.8002357100766058) internal successors, (3055), 1703 states have internal predecessors, (3055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:23:17,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-19 13:23:17,714 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:23:17,715 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] [2021-11-19 13:23:17,716 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-19 13:23:17,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:23:17,722 INFO L85 PathProgramCache]: Analyzing trace with hash -172755925, now seen corresponding path program 1 times [2021-11-19 13:23:17,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:23:17,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284594157] [2021-11-19 13:23:17,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:23:17,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:23:18,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:23:18,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:23:18,279 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:23:18,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284594157] [2021-11-19 13:23:18,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284594157] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:23:18,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:23:18,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 13:23:18,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697845455] [2021-11-19 13:23:18,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:23:18,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:23:18,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:23:18,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:23:18,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:23:18,373 INFO L87 Difference]: Start difference. First operand has 1704 states, 1697 states have (on average 1.8002357100766058) internal successors, (3055), 1703 states have internal predecessors, (3055), 0 states have call successors, (0), 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 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:23:19,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:23:19,190 INFO L93 Difference]: Finished difference Result 2389 states and 4199 transitions. [2021-11-19 13:23:19,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:23:19,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2021-11-19 13:23:19,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:23:19,242 INFO L225 Difference]: With dead ends: 2389 [2021-11-19 13:23:19,242 INFO L226 Difference]: Without dead ends: 2233 [2021-11-19 13:23:19,252 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 [2021-11-19 13:23:19,262 INFO L933 BasicCegarLoop]: 3529 mSDtfsCounter, 1817 mSDsluCounter, 1929 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1817 SdHoareTripleChecker+Valid, 5452 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:23:19,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1817 Valid, 5452 Invalid, 217 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [95 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 13:23:19,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2233 states. [2021-11-19 13:23:19,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2233 to 2223. [2021-11-19 13:23:19,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2223 states, 2217 states have (on average 1.2877762742444745) internal successors, (2855), 2222 states have internal predecessors, (2855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:23:19,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2223 states to 2223 states and 2855 transitions. [2021-11-19 13:23:19,503 INFO L78 Accepts]: Start accepts. Automaton has 2223 states and 2855 transitions. Word has length 75 [2021-11-19 13:23:19,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:23:19,505 INFO L470 AbstractCegarLoop]: Abstraction has 2223 states and 2855 transitions. [2021-11-19 13:23:19,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:23:19,506 INFO L276 IsEmpty]: Start isEmpty. Operand 2223 states and 2855 transitions. [2021-11-19 13:23:19,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-19 13:23:19,516 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:23:19,516 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] [2021-11-19 13:23:19,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 13:23:19,517 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-19 13:23:19,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:23:19,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1644069307, now seen corresponding path program 1 times [2021-11-19 13:23:19,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:23:19,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972521574] [2021-11-19 13:23:19,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:23:19,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:23:19,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:23:19,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:23:19,696 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:23:19,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972521574] [2021-11-19 13:23:19,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972521574] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:23:19,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:23:19,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 13:23:19,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128354062] [2021-11-19 13:23:19,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:23:19,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:23:19,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:23:19,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:23:19,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:23:19,712 INFO L87 Difference]: Start difference. First operand 2223 states and 2855 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:23:19,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:23:19,967 INFO L93 Difference]: Finished difference Result 2998 states and 3955 transitions. [2021-11-19 13:23:19,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:23:19,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2021-11-19 13:23:19,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:23:19,986 INFO L225 Difference]: With dead ends: 2998 [2021-11-19 13:23:19,990 INFO L226 Difference]: Without dead ends: 2621 [2021-11-19 13:23:19,995 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 [2021-11-19 13:23:19,997 INFO L933 BasicCegarLoop]: 2232 mSDtfsCounter, 1128 mSDsluCounter, 1339 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1128 SdHoareTripleChecker+Valid, 3562 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:23:19,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1128 Valid, 3562 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:23:20,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2621 states. [2021-11-19 13:23:20,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2621 to 2611. [2021-11-19 13:23:20,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2611 states, 2605 states have (on average 1.307101727447217) internal successors, (3405), 2610 states have internal predecessors, (3405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:23:20,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2611 states to 2611 states and 3405 transitions. [2021-11-19 13:23:20,118 INFO L78 Accepts]: Start accepts. Automaton has 2611 states and 3405 transitions. Word has length 75 [2021-11-19 13:23:20,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:23:20,127 INFO L470 AbstractCegarLoop]: Abstraction has 2611 states and 3405 transitions. [2021-11-19 13:23:20,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:23:20,128 INFO L276 IsEmpty]: Start isEmpty. Operand 2611 states and 3405 transitions. [2021-11-19 13:23:20,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-19 13:23:20,137 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:23:20,138 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] [2021-11-19 13:23:20,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 13:23:20,139 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-19 13:23:20,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:23:20,140 INFO L85 PathProgramCache]: Analyzing trace with hash 281280943, now seen corresponding path program 1 times [2021-11-19 13:23:20,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:23:20,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908994284] [2021-11-19 13:23:20,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:23:20,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:23:20,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:23:20,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:23:20,381 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:23:20,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908994284] [2021-11-19 13:23:20,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908994284] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:23:20,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:23:20,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 13:23:20,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308026165] [2021-11-19 13:23:20,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:23:20,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:23:20,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:23:20,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:23:20,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:23:20,390 INFO L87 Difference]: Start difference. First operand 2611 states and 3405 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:23:21,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:23:21,706 INFO L93 Difference]: Finished difference Result 4650 states and 6214 transitions. [2021-11-19 13:23:21,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:23:21,707 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2021-11-19 13:23:21,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:23:21,722 INFO L225 Difference]: With dead ends: 4650 [2021-11-19 13:23:21,722 INFO L226 Difference]: Without dead ends: 2641 [2021-11-19 13:23:21,727 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 [2021-11-19 13:23:21,735 INFO L933 BasicCegarLoop]: 948 mSDtfsCounter, 5346 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5346 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:23:21,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5346 Valid, 1124 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 13:23:21,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2641 states. [2021-11-19 13:23:21,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2641 to 2631. [2021-11-19 13:23:21,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2631 states, 2625 states have (on average 1.3455238095238096) internal successors, (3532), 2630 states have internal predecessors, (3532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:23:21,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2631 states to 2631 states and 3532 transitions. [2021-11-19 13:23:21,888 INFO L78 Accepts]: Start accepts. Automaton has 2631 states and 3532 transitions. Word has length 75 [2021-11-19 13:23:21,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:23:21,889 INFO L470 AbstractCegarLoop]: Abstraction has 2631 states and 3532 transitions. [2021-11-19 13:23:21,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:23:21,889 INFO L276 IsEmpty]: Start isEmpty. Operand 2631 states and 3532 transitions. [2021-11-19 13:23:21,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-19 13:23:21,897 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:23:21,897 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:23:21,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 13:23:21,898 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-19 13:23:21,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:23:21,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1643166464, now seen corresponding path program 1 times [2021-11-19 13:23:21,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:23:21,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086569044] [2021-11-19 13:23:21,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:23:21,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:23:21,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:23:22,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:23:22,036 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:23:22,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086569044] [2021-11-19 13:23:22,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086569044] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:23:22,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:23:22,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 13:23:22,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815925402] [2021-11-19 13:23:22,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:23:22,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:23:22,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:23:22,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:23:22,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:23:22,039 INFO L87 Difference]: Start difference. First operand 2631 states and 3532 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:23:23,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:23:23,164 INFO L93 Difference]: Finished difference Result 5389 states and 7377 transitions. [2021-11-19 13:23:23,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:23:23,165 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2021-11-19 13:23:23,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:23:23,191 INFO L225 Difference]: With dead ends: 5389 [2021-11-19 13:23:23,191 INFO L226 Difference]: Without dead ends: 3200 [2021-11-19 13:23:23,199 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 [2021-11-19 13:23:23,209 INFO L933 BasicCegarLoop]: 720 mSDtfsCounter, 4200 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4200 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:23:23,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4200 Valid, 892 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 13:23:23,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3200 states. [2021-11-19 13:23:23,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3200 to 3190. [2021-11-19 13:23:23,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3190 states, 3184 states have (on average 1.3693467336683418) internal successors, (4360), 3189 states have internal predecessors, (4360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:23:23,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3190 states to 3190 states and 4360 transitions. [2021-11-19 13:23:23,501 INFO L78 Accepts]: Start accepts. Automaton has 3190 states and 4360 transitions. Word has length 76 [2021-11-19 13:23:23,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:23:23,503 INFO L470 AbstractCegarLoop]: Abstraction has 3190 states and 4360 transitions. [2021-11-19 13:23:23,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:23:23,503 INFO L276 IsEmpty]: Start isEmpty. Operand 3190 states and 4360 transitions. [2021-11-19 13:23:23,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-19 13:23:23,510 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:23:23,511 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] [2021-11-19 13:23:23,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-19 13:23:23,512 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-19 13:23:23,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:23:23,514 INFO L85 PathProgramCache]: Analyzing trace with hash -867968266, now seen corresponding path program 1 times [2021-11-19 13:23:23,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:23:23,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259496612] [2021-11-19 13:23:23,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:23:23,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:23:23,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:23:23,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:23:23,644 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:23:23,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259496612] [2021-11-19 13:23:23,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259496612] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:23:23,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:23:23,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 13:23:23,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937186797] [2021-11-19 13:23:23,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:23:23,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:23:23,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:23:23,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:23:23,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:23:23,647 INFO L87 Difference]: Start difference. First operand 3190 states and 4360 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:23:24,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:23:24,044 INFO L93 Difference]: Finished difference Result 6732 states and 9309 transitions. [2021-11-19 13:23:24,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:23:24,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2021-11-19 13:23:24,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:23:24,079 INFO L225 Difference]: With dead ends: 6732 [2021-11-19 13:23:24,079 INFO L226 Difference]: Without dead ends: 4959 [2021-11-19 13:23:24,084 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 [2021-11-19 13:23:24,085 INFO L933 BasicCegarLoop]: 1650 mSDtfsCounter, 1039 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 2498 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:23:24,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1039 Valid, 2498 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:23:24,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4959 states. [2021-11-19 13:23:24,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4959 to 4949. [2021-11-19 13:23:24,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4949 states, 4943 states have (on average 1.3667813068986445) internal successors, (6756), 4948 states have internal predecessors, (6756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:23:24,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4949 states to 4949 states and 6756 transitions. [2021-11-19 13:23:24,515 INFO L78 Accepts]: Start accepts. Automaton has 4949 states and 6756 transitions. Word has length 77 [2021-11-19 13:23:24,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:23:24,515 INFO L470 AbstractCegarLoop]: Abstraction has 4949 states and 6756 transitions. [2021-11-19 13:23:24,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:23:24,516 INFO L276 IsEmpty]: Start isEmpty. Operand 4949 states and 6756 transitions. [2021-11-19 13:23:24,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-19 13:23:24,526 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:23:24,527 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] [2021-11-19 13:23:24,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-19 13:23:24,527 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-19 13:23:24,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:23:24,528 INFO L85 PathProgramCache]: Analyzing trace with hash 532148261, now seen corresponding path program 1 times [2021-11-19 13:23:24,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:23:24,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407046453] [2021-11-19 13:23:24,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:23:24,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:23:24,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:23:24,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:23:24,615 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:23:24,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407046453] [2021-11-19 13:23:24,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407046453] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:23:24,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:23:24,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 13:23:24,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479918038] [2021-11-19 13:23:24,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:23:24,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:23:24,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:23:24,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:23:24,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:23:24,619 INFO L87 Difference]: Start difference. First operand 4949 states and 6756 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:23:25,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:23:25,266 INFO L93 Difference]: Finished difference Result 10728 states and 14799 transitions. [2021-11-19 13:23:25,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:23:25,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2021-11-19 13:23:25,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:23:25,315 INFO L225 Difference]: With dead ends: 10728 [2021-11-19 13:23:25,315 INFO L226 Difference]: Without dead ends: 7737 [2021-11-19 13:23:25,323 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 [2021-11-19 13:23:25,325 INFO L933 BasicCegarLoop]: 1672 mSDtfsCounter, 1059 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 2516 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:23:25,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1059 Valid, 2516 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:23:25,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7737 states. [2021-11-19 13:23:26,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7737 to 7727. [2021-11-19 13:23:26,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7727 states, 7721 states have (on average 1.3636834606916202) internal successors, (10529), 7726 states have internal predecessors, (10529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:23:26,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7727 states to 7727 states and 10529 transitions. [2021-11-19 13:23:26,102 INFO L78 Accepts]: Start accepts. Automaton has 7727 states and 10529 transitions. Word has length 77 [2021-11-19 13:23:26,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:23:26,103 INFO L470 AbstractCegarLoop]: Abstraction has 7727 states and 10529 transitions. [2021-11-19 13:23:26,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:23:26,104 INFO L276 IsEmpty]: Start isEmpty. Operand 7727 states and 10529 transitions. [2021-11-19 13:23:26,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-19 13:23:26,118 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:23:26,118 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:23:26,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-19 13:23:26,118 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-19 13:23:26,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:23:26,119 INFO L85 PathProgramCache]: Analyzing trace with hash 413664227, now seen corresponding path program 1 times [2021-11-19 13:23:26,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:23:26,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176740250] [2021-11-19 13:23:26,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:23:26,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:23:26,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:23:26,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:23:26,205 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:23:26,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176740250] [2021-11-19 13:23:26,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176740250] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:23:26,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:23:26,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 13:23:26,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798457935] [2021-11-19 13:23:26,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:23:26,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:23:26,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:23:26,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:23:26,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:23:26,208 INFO L87 Difference]: Start difference. First operand 7727 states and 10529 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:23:27,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:23:27,135 INFO L93 Difference]: Finished difference Result 18134 states and 25082 transitions. [2021-11-19 13:23:27,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:23:27,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2021-11-19 13:23:27,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:23:27,195 INFO L225 Difference]: With dead ends: 18134 [2021-11-19 13:23:27,195 INFO L226 Difference]: Without dead ends: 12191 [2021-11-19 13:23:27,204 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 [2021-11-19 13:23:27,206 INFO L933 BasicCegarLoop]: 1281 mSDtfsCounter, 664 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 2136 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:23:27,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [664 Valid, 2136 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:23:27,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12191 states. [2021-11-19 13:23:28,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12191 to 12181. [2021-11-19 13:23:28,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12181 states, 12175 states have (on average 1.3685420944558522) internal successors, (16662), 12180 states have internal predecessors, (16662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:23:28,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12181 states to 12181 states and 16662 transitions. [2021-11-19 13:23:28,101 INFO L78 Accepts]: Start accepts. Automaton has 12181 states and 16662 transitions. Word has length 77 [2021-11-19 13:23:28,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:23:28,102 INFO L470 AbstractCegarLoop]: Abstraction has 12181 states and 16662 transitions. [2021-11-19 13:23:28,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:23:28,102 INFO L276 IsEmpty]: Start isEmpty. Operand 12181 states and 16662 transitions. [2021-11-19 13:23:28,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-19 13:23:28,116 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:23:28,116 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] [2021-11-19 13:23:28,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-19 13:23:28,116 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-19 13:23:28,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:23:28,117 INFO L85 PathProgramCache]: Analyzing trace with hash 354976211, now seen corresponding path program 1 times [2021-11-19 13:23:28,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:23:28,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645356157] [2021-11-19 13:23:28,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:23:28,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:23:28,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:23:28,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:23:28,218 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:23:28,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645356157] [2021-11-19 13:23:28,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645356157] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:23:28,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:23:28,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 13:23:28,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045374329] [2021-11-19 13:23:28,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:23:28,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:23:28,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:23:28,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:23:28,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:23:28,221 INFO L87 Difference]: Start difference. First operand 12181 states and 16662 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:23:30,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:23:30,689 INFO L93 Difference]: Finished difference Result 30002 states and 41316 transitions. [2021-11-19 13:23:30,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:23:30,690 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2021-11-19 13:23:30,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:23:30,751 INFO L225 Difference]: With dead ends: 30002 [2021-11-19 13:23:30,752 INFO L226 Difference]: Without dead ends: 18787 [2021-11-19 13:23:30,775 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 [2021-11-19 13:23:30,776 INFO L933 BasicCegarLoop]: 601 mSDtfsCounter, 3600 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3600 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:23:30,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3600 Valid, 757 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 13:23:30,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18787 states. [2021-11-19 13:23:32,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18787 to 18777. [2021-11-19 13:23:32,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18777 states, 18771 states have (on average 1.3683341324383358) internal successors, (25685), 18776 states have internal predecessors, (25685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:23:32,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18777 states to 18777 states and 25685 transitions. [2021-11-19 13:23:32,232 INFO L78 Accepts]: Start accepts. Automaton has 18777 states and 25685 transitions. Word has length 77 [2021-11-19 13:23:32,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:23:32,233 INFO L470 AbstractCegarLoop]: Abstraction has 18777 states and 25685 transitions. [2021-11-19 13:23:32,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:23:32,233 INFO L276 IsEmpty]: Start isEmpty. Operand 18777 states and 25685 transitions. [2021-11-19 13:23:32,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-19 13:23:32,249 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:23:32,249 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] [2021-11-19 13:23:32,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-19 13:23:32,250 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-19 13:23:32,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:23:32,251 INFO L85 PathProgramCache]: Analyzing trace with hash -2035237967, now seen corresponding path program 1 times [2021-11-19 13:23:32,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:23:32,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238598857] [2021-11-19 13:23:32,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:23:32,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:23:32,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:23:32,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:23:32,380 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:23:32,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238598857] [2021-11-19 13:23:32,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238598857] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:23:32,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:23:32,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 13:23:32,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513140605] [2021-11-19 13:23:32,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:23:32,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:23:32,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:23:32,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:23:32,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:23:32,383 INFO L87 Difference]: Start difference. First operand 18777 states and 25685 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:23:37,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:23:37,967 INFO L93 Difference]: Finished difference Result 80093 states and 110675 transitions. [2021-11-19 13:23:37,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 13:23:37,968 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2021-11-19 13:23:37,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:23:38,180 INFO L225 Difference]: With dead ends: 80093 [2021-11-19 13:23:38,180 INFO L226 Difference]: Without dead ends: 73478 [2021-11-19 13:23:38,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-11-19 13:23:38,207 INFO L933 BasicCegarLoop]: 632 mSDtfsCounter, 6306 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 1218 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6306 SdHoareTripleChecker+Valid, 1582 SdHoareTripleChecker+Invalid, 1539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 1218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:23:38,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6306 Valid, 1582 Invalid, 1539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 1218 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-19 13:23:38,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73478 states. [2021-11-19 13:23:39,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73478 to 18825. [2021-11-19 13:23:39,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18825 states, 18819 states have (on average 1.3682448589191774) internal successors, (25749), 18824 states have internal predecessors, (25749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:23:39,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18825 states to 18825 states and 25749 transitions. [2021-11-19 13:23:40,000 INFO L78 Accepts]: Start accepts. Automaton has 18825 states and 25749 transitions. Word has length 78 [2021-11-19 13:23:40,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:23:40,000 INFO L470 AbstractCegarLoop]: Abstraction has 18825 states and 25749 transitions. [2021-11-19 13:23:40,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:23:40,001 INFO L276 IsEmpty]: Start isEmpty. Operand 18825 states and 25749 transitions. [2021-11-19 13:23:40,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-19 13:23:40,013 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:23:40,013 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] [2021-11-19 13:23:40,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-19 13:23:40,014 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-19 13:23:40,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:23:40,015 INFO L85 PathProgramCache]: Analyzing trace with hash 139680224, now seen corresponding path program 1 times [2021-11-19 13:23:40,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:23:40,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814518301] [2021-11-19 13:23:40,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:23:40,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:23:40,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:23:40,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:23:40,114 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:23:40,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814518301] [2021-11-19 13:23:40,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814518301] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:23:40,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:23:40,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 13:23:40,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276902829] [2021-11-19 13:23:40,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:23:40,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:23:40,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:23:40,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:23:40,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:23:40,116 INFO L87 Difference]: Start difference. First operand 18825 states and 25749 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:23:47,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:23:47,554 INFO L93 Difference]: Finished difference Result 83478 states and 114969 transitions. [2021-11-19 13:23:47,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 13:23:47,558 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2021-11-19 13:23:47,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:23:47,863 INFO L225 Difference]: With dead ends: 83478 [2021-11-19 13:23:47,864 INFO L226 Difference]: Without dead ends: 76594 [2021-11-19 13:23:47,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-11-19 13:23:47,899 INFO L933 BasicCegarLoop]: 626 mSDtfsCounter, 5832 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 1244 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5832 SdHoareTripleChecker+Valid, 1563 SdHoareTripleChecker+Invalid, 1566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 1244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:23:47,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5832 Valid, 1563 Invalid, 1566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 1244 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 13:23:47,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76594 states. [2021-11-19 13:23:50,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76594 to 19005. [2021-11-19 13:23:50,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19005 states, 18999 states have (on average 1.3679141007421443) internal successors, (25989), 19004 states have internal predecessors, (25989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:23:50,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19005 states to 19005 states and 25989 transitions. [2021-11-19 13:23:50,203 INFO L78 Accepts]: Start accepts. Automaton has 19005 states and 25989 transitions. Word has length 78 [2021-11-19 13:23:50,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:23:50,203 INFO L470 AbstractCegarLoop]: Abstraction has 19005 states and 25989 transitions. [2021-11-19 13:23:50,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:23:50,204 INFO L276 IsEmpty]: Start isEmpty. Operand 19005 states and 25989 transitions. [2021-11-19 13:23:50,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-19 13:23:50,219 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:23:50,219 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] [2021-11-19 13:23:50,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-19 13:23:50,220 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-19 13:23:50,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:23:50,221 INFO L85 PathProgramCache]: Analyzing trace with hash 368267107, now seen corresponding path program 1 times [2021-11-19 13:23:50,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:23:50,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85454070] [2021-11-19 13:23:50,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:23:50,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:23:50,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:23:50,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:23:50,332 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:23:50,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85454070] [2021-11-19 13:23:50,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85454070] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:23:50,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:23:50,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 13:23:50,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121947210] [2021-11-19 13:23:50,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:23:50,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:23:50,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:23:50,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:23:50,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:23:50,335 INFO L87 Difference]: Start difference. First operand 19005 states and 25989 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:23:59,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:23:59,574 INFO L93 Difference]: Finished difference Result 76708 states and 105343 transitions. [2021-11-19 13:23:59,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 13:23:59,575 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2021-11-19 13:23:59,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:23:59,723 INFO L225 Difference]: With dead ends: 76708 [2021-11-19 13:23:59,724 INFO L226 Difference]: Without dead ends: 70118 [2021-11-19 13:23:59,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-11-19 13:23:59,746 INFO L933 BasicCegarLoop]: 614 mSDtfsCounter, 5535 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5535 SdHoareTripleChecker+Valid, 1546 SdHoareTripleChecker+Invalid, 1610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:23:59,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5535 Valid, 1546 Invalid, 1610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 1274 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 13:23:59,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70118 states. [2021-11-19 13:24:02,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70118 to 19305. [2021-11-19 13:24:02,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19305 states, 19299 states have (on average 1.3675838126327788) internal successors, (26393), 19304 states have internal predecessors, (26393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:24:02,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19305 states to 19305 states and 26393 transitions. [2021-11-19 13:24:02,122 INFO L78 Accepts]: Start accepts. Automaton has 19305 states and 26393 transitions. Word has length 78 [2021-11-19 13:24:02,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:24:02,123 INFO L470 AbstractCegarLoop]: Abstraction has 19305 states and 26393 transitions. [2021-11-19 13:24:02,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:24:02,123 INFO L276 IsEmpty]: Start isEmpty. Operand 19305 states and 26393 transitions. [2021-11-19 13:24:02,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-19 13:24:02,139 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:24:02,139 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] [2021-11-19 13:24:02,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-19 13:24:02,140 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-19 13:24:02,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:24:02,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1196772921, now seen corresponding path program 1 times [2021-11-19 13:24:02,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:24:02,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245413173] [2021-11-19 13:24:02,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:24:02,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:24:02,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:24:02,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:24:02,221 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:24:02,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245413173] [2021-11-19 13:24:02,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245413173] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:24:02,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:24:02,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 13:24:02,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796732913] [2021-11-19 13:24:02,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:24:02,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:24:02,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:24:02,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:24:02,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:24:02,223 INFO L87 Difference]: Start difference. First operand 19305 states and 26393 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:24:06,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:24:06,953 INFO L93 Difference]: Finished difference Result 51404 states and 70566 transitions. [2021-11-19 13:24:06,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:24:06,954 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2021-11-19 13:24:06,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:24:07,023 INFO L225 Difference]: With dead ends: 51404 [2021-11-19 13:24:07,024 INFO L226 Difference]: Without dead ends: 32970 [2021-11-19 13:24:07,056 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 [2021-11-19 13:24:07,057 INFO L933 BasicCegarLoop]: 663 mSDtfsCounter, 3684 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3684 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:24:07,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3684 Valid, 839 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 13:24:07,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32970 states. [2021-11-19 13:24:10,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32970 to 25577. [2021-11-19 13:24:10,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25577 states, 25571 states have (on average 1.3699894411638185) internal successors, (35032), 25576 states have internal predecessors, (35032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:24:10,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25577 states to 25577 states and 35032 transitions. [2021-11-19 13:24:10,100 INFO L78 Accepts]: Start accepts. Automaton has 25577 states and 35032 transitions. Word has length 79 [2021-11-19 13:24:10,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:24:10,101 INFO L470 AbstractCegarLoop]: Abstraction has 25577 states and 35032 transitions. [2021-11-19 13:24:10,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:24:10,101 INFO L276 IsEmpty]: Start isEmpty. Operand 25577 states and 35032 transitions. [2021-11-19 13:24:10,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-19 13:24:10,114 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:24:10,115 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] [2021-11-19 13:24:10,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-19 13:24:10,115 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-19 13:24:10,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:24:10,116 INFO L85 PathProgramCache]: Analyzing trace with hash 404807133, now seen corresponding path program 1 times [2021-11-19 13:24:10,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:24:10,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614984136] [2021-11-19 13:24:10,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:24:10,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:24:10,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:24:10,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:24:10,239 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:24:10,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614984136] [2021-11-19 13:24:10,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614984136] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:24:10,239 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:24:10,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 13:24:10,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870421648] [2021-11-19 13:24:10,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:24:10,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:24:10,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:24:10,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:24:10,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:24:10,242 INFO L87 Difference]: Start difference. First operand 25577 states and 35032 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:24:16,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:24:16,051 INFO L93 Difference]: Finished difference Result 43883 states and 60313 transitions. [2021-11-19 13:24:16,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:24:16,052 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2021-11-19 13:24:16,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:24:16,119 INFO L225 Difference]: With dead ends: 43883 [2021-11-19 13:24:16,119 INFO L226 Difference]: Without dead ends: 43881 [2021-11-19 13:24:16,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:24:16,128 INFO L933 BasicCegarLoop]: 1176 mSDtfsCounter, 102 mSDsluCounter, 2228 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 3378 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:24:16,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 3378 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:24:16,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43881 states.