./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250f30ac-1ca4-435b-bacf-1259ec42b28f/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250f30ac-1ca4-435b-bacf-1259ec42b28f/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250f30ac-1ca4-435b-bacf-1259ec42b28f/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250f30ac-1ca4-435b-bacf-1259ec42b28f/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250f30ac-1ca4-435b-bacf-1259ec42b28f/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250f30ac-1ca4-435b-bacf-1259ec42b28f/bin/uautomizer-YU5uOKAj3y --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash afa96f494675daaffb7cf8ecfbe30f06e1bb06b9219ecf3df6181ac4e4f076f6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:07:44,402 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:07:44,406 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:07:44,487 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:07:44,489 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:07:44,494 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:07:44,497 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:07:44,502 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:07:44,506 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:07:44,517 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:07:44,518 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:07:44,521 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:07:44,522 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:07:44,526 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:07:44,530 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:07:44,539 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:07:44,542 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:07:44,544 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:07:44,551 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:07:44,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:07:44,564 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:07:44,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:07:44,571 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:07:44,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:07:44,584 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:07:44,585 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:07:44,585 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:07:44,589 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:07:44,589 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:07:44,592 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:07:44,592 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:07:44,594 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:07:44,597 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:07:44,599 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:07:44,601 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:07:44,602 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:07:44,603 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:07:44,603 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:07:44,604 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:07:44,605 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:07:44,606 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:07:44,608 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250f30ac-1ca4-435b-bacf-1259ec42b28f/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-13 18:07:44,653 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:07:44,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:07:44,654 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:07:44,654 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:07:44,655 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:07:44,655 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:07:44,656 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:07:44,656 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:07:44,657 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:07:44,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:07:44,657 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:07:44,658 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:07:44,658 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:07:44,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:07:44,658 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:07:44,659 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:07:44,659 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:07:44,659 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:07:44,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:07:44,659 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:07:44,660 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:07:44,660 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:07:44,660 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:07:44,661 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:07:44,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:07:44,661 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:07:44,662 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:07:44,662 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:07:44,662 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:07:44,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:07:44,663 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:07:44,663 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:07:44,663 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:07:44,663 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:07:44,664 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250f30ac-1ca4-435b-bacf-1259ec42b28f/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250f30ac-1ca4-435b-bacf-1259ec42b28f/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> afa96f494675daaffb7cf8ecfbe30f06e1bb06b9219ecf3df6181ac4e4f076f6 [2021-11-13 18:07:45,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:07:45,049 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:07:45,053 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:07:45,054 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:07:45,056 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:07:45,058 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250f30ac-1ca4-435b-bacf-1259ec42b28f/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2021-11-13 18:07:45,170 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250f30ac-1ca4-435b-bacf-1259ec42b28f/bin/uautomizer-YU5uOKAj3y/data/3e92641e8/fe6bd152c4504e37bb339f4e036dedfa/FLAGcbeadb1c9 [2021-11-13 18:07:46,125 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:07:46,129 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250f30ac-1ca4-435b-bacf-1259ec42b28f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2021-11-13 18:07:46,182 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250f30ac-1ca4-435b-bacf-1259ec42b28f/bin/uautomizer-YU5uOKAj3y/data/3e92641e8/fe6bd152c4504e37bb339f4e036dedfa/FLAGcbeadb1c9 [2021-11-13 18:07:46,673 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250f30ac-1ca4-435b-bacf-1259ec42b28f/bin/uautomizer-YU5uOKAj3y/data/3e92641e8/fe6bd152c4504e37bb339f4e036dedfa [2021-11-13 18:07:46,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:07:46,677 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:07:46,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:07:46,679 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:07:46,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:07:46,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:07:46" (1/1) ... [2021-11-13 18:07:46,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b81a06b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:07:46, skipping insertion in model container [2021-11-13 18:07:46,686 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:07:46" (1/1) ... [2021-11-13 18:07:46,695 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:07:46,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:07:47,431 WARN L228 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_250f30ac-1ca4-435b-bacf-1259ec42b28f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[12460,12473] [2021-11-13 18:07:47,514 WARN L228 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_250f30ac-1ca4-435b-bacf-1259ec42b28f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[19746,19759] [2021-11-13 18:07:47,532 WARN L228 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_250f30ac-1ca4-435b-bacf-1259ec42b28f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[22098,22111] [2021-11-13 18:07:47,542 WARN L228 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_250f30ac-1ca4-435b-bacf-1259ec42b28f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[23218,23231] [2021-11-13 18:07:47,592 WARN L228 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_250f30ac-1ca4-435b-bacf-1259ec42b28f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[26768,26781] [2021-11-13 18:07:47,607 WARN L228 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_250f30ac-1ca4-435b-bacf-1259ec42b28f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[27891,27904] [2021-11-13 18:07:47,631 WARN L228 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_250f30ac-1ca4-435b-bacf-1259ec42b28f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[30206,30219] [2021-11-13 18:07:48,400 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:07:48,427 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:07:48,531 WARN L228 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_250f30ac-1ca4-435b-bacf-1259ec42b28f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[12460,12473] [2021-11-13 18:07:48,557 WARN L228 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_250f30ac-1ca4-435b-bacf-1259ec42b28f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[19746,19759] [2021-11-13 18:07:48,571 WARN L228 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_250f30ac-1ca4-435b-bacf-1259ec42b28f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[22098,22111] [2021-11-13 18:07:48,578 WARN L228 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_250f30ac-1ca4-435b-bacf-1259ec42b28f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[23218,23231] [2021-11-13 18:07:48,595 WARN L228 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_250f30ac-1ca4-435b-bacf-1259ec42b28f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[26768,26781] [2021-11-13 18:07:48,601 WARN L228 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_250f30ac-1ca4-435b-bacf-1259ec42b28f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[27891,27904] [2021-11-13 18:07:48,634 WARN L228 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_250f30ac-1ca4-435b-bacf-1259ec42b28f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[30206,30219] [2021-11-13 18:07:49,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:07:49,119 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:07:49,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:07:49 WrapperNode [2021-11-13 18:07:49,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:07:49,121 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:07:49,122 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:07:49,123 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:07:49,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:07:49" (1/1) ... [2021-11-13 18:07:49,202 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:07:49" (1/1) ... [2021-11-13 18:07:49,420 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:07:49,421 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:07:49,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:07:49,423 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:07:49,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:07:49" (1/1) ... [2021-11-13 18:07:49,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:07:49" (1/1) ... [2021-11-13 18:07:49,465 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:07:49" (1/1) ... [2021-11-13 18:07:49,467 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:07:49" (1/1) ... [2021-11-13 18:07:49,576 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:07:49" (1/1) ... [2021-11-13 18:07:49,618 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:07:49" (1/1) ... [2021-11-13 18:07:49,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:07:49" (1/1) ... [2021-11-13 18:07:49,687 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:07:49,689 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:07:49,689 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:07:49,689 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:07:49,691 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:07:49" (1/1) ... [2021-11-13 18:07:49,761 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:07:49,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250f30ac-1ca4-435b-bacf-1259ec42b28f/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:07:49,796 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250f30ac-1ca4-435b-bacf-1259ec42b28f/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:07:49,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250f30ac-1ca4-435b-bacf-1259ec42b28f/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:07:49,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:07:49,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:07:49,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:07:49,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:07:54,326 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:07:54,327 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 18:07:54,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:07:54 BoogieIcfgContainer [2021-11-13 18:07:54,332 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:07:54,335 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:07:54,335 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:07:54,340 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:07:54,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:07:46" (1/3) ... [2021-11-13 18:07:54,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6112849d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:07:54, skipping insertion in model container [2021-11-13 18:07:54,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:07:49" (2/3) ... [2021-11-13 18:07:54,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6112849d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:07:54, skipping insertion in model container [2021-11-13 18:07:54,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:07:54" (3/3) ... [2021-11-13 18:07:54,345 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2021-11-13 18:07:54,352 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:07:54,353 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-13 18:07:54,428 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:07:54,438 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=PETRI_NET, 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 [2021-11-13 18:07:54,438 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-13 18:07:54,497 INFO L276 IsEmpty]: Start isEmpty. Operand has 1106 states, 1098 states have (on average 1.8852459016393444) internal successors, (2070), 1105 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:07:54,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-13 18:07:54,538 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:07:54,539 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:07:54,540 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 18:07:54,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:07:54,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1160265217, now seen corresponding path program 1 times [2021-11-13 18:07:54,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:07:54,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365460174] [2021-11-13 18:07:54,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:07:54,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:07:54,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:07:55,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:07:55,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:07:55,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365460174] [2021-11-13 18:07:55,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365460174] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:07:55,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:07:55,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:07:55,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113034660] [2021-11-13 18:07:55,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:07:55,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:07:55,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:07:55,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:07:55,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:07:55,249 INFO L87 Difference]: Start difference. First operand has 1106 states, 1098 states have (on average 1.8852459016393444) internal successors, (2070), 1105 states have internal predecessors, (2070), 0 states have call successors, (0), 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 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:07:55,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:07:55,667 INFO L93 Difference]: Finished difference Result 1465 states and 2651 transitions. [2021-11-13 18:07:55,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:07:55,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-13 18:07:55,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:07:55,770 INFO L225 Difference]: With dead ends: 1465 [2021-11-13 18:07:55,770 INFO L226 Difference]: Without dead ends: 1288 [2021-11-13 18:07:55,777 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 [2021-11-13 18:07:55,783 INFO L933 BasicCegarLoop]: 2055 mSDtfsCounter, 969 mSDsluCounter, 1275 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 160.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 3330 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 34.05ms SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 206.98ms IncrementalHoareTripleChecker+Time [2021-11-13 18:07:55,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [969 Valid, 3330 Invalid, 114 Unknown, 0 Unchecked, 34.05ms Time], IncrementalHoareTripleChecker [56 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 206.98ms Time] [2021-11-13 18:07:55,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2021-11-13 18:07:55,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1280. [2021-11-13 18:07:55,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1280 states, 1273 states have (on average 1.3165750196386488) internal successors, (1676), 1279 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:07:55,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1676 transitions. [2021-11-13 18:07:55,963 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1676 transitions. Word has length 64 [2021-11-13 18:07:55,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:07:55,964 INFO L470 AbstractCegarLoop]: Abstraction has 1280 states and 1676 transitions. [2021-11-13 18:07:55,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:07:55,967 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1676 transitions. [2021-11-13 18:07:55,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-13 18:07:55,980 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:07:55,980 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:07:55,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 18:07:55,982 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 18:07:55,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:07:55,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1978887998, now seen corresponding path program 1 times [2021-11-13 18:07:55,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:07:55,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438696680] [2021-11-13 18:07:55,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:07:55,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:07:56,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:07:56,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:07:56,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:07:56,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438696680] [2021-11-13 18:07:56,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438696680] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:07:56,210 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:07:56,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:07:56,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982255934] [2021-11-13 18:07:56,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:07:56,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:07:56,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:07:56,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:07:56,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:07:56,215 INFO L87 Difference]: Start difference. First operand 1280 states and 1676 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:07:56,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:07:56,367 INFO L93 Difference]: Finished difference Result 1930 states and 2622 transitions. [2021-11-13 18:07:56,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:07:56,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-13 18:07:56,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:07:56,385 INFO L225 Difference]: With dead ends: 1930 [2021-11-13 18:07:56,385 INFO L226 Difference]: Without dead ends: 1576 [2021-11-13 18:07:56,392 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 [2021-11-13 18:07:56,394 INFO L933 BasicCegarLoop]: 1424 mSDtfsCounter, 717 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 2315 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.13ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 66.87ms IncrementalHoareTripleChecker+Time [2021-11-13 18:07:56,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [717 Valid, 2315 Invalid, 43 Unknown, 0 Unchecked, 8.13ms Time], IncrementalHoareTripleChecker [20 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 66.87ms Time] [2021-11-13 18:07:56,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2021-11-13 18:07:56,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 1568. [2021-11-13 18:07:56,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1568 states, 1561 states have (on average 1.3401665598975017) internal successors, (2092), 1567 states have internal predecessors, (2092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:07:56,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 2092 transitions. [2021-11-13 18:07:56,483 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 2092 transitions. Word has length 64 [2021-11-13 18:07:56,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:07:56,484 INFO L470 AbstractCegarLoop]: Abstraction has 1568 states and 2092 transitions. [2021-11-13 18:07:56,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:07:56,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 2092 transitions. [2021-11-13 18:07:56,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-13 18:07:56,491 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:07:56,492 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:07:56,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 18:07:56,501 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 18:07:56,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:07:56,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1566940908, now seen corresponding path program 1 times [2021-11-13 18:07:56,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:07:56,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316315564] [2021-11-13 18:07:56,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:07:56,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:07:56,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:07:56,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:07:56,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:07:56,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316315564] [2021-11-13 18:07:56,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316315564] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:07:56,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:07:56,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:07:56,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421622236] [2021-11-13 18:07:56,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:07:56,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:07:56,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:07:56,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:07:56,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:07:56,761 INFO L87 Difference]: Start difference. First operand 1568 states and 2092 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:07:57,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:07:57,722 INFO L93 Difference]: Finished difference Result 3046 states and 4188 transitions. [2021-11-13 18:07:57,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:07:57,722 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-13 18:07:57,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:07:57,736 INFO L225 Difference]: With dead ends: 3046 [2021-11-13 18:07:57,736 INFO L226 Difference]: Without dead ends: 1787 [2021-11-13 18:07:57,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:07:57,740 INFO L933 BasicCegarLoop]: 679 mSDtfsCounter, 3657 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 632.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3657 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.11ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 780.82ms IncrementalHoareTripleChecker+Time [2021-11-13 18:07:57,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3657 Valid, 835 Invalid, 513 Unknown, 0 Unchecked, 20.11ms Time], IncrementalHoareTripleChecker [17 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 780.82ms Time] [2021-11-13 18:07:57,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1787 states. [2021-11-13 18:07:57,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1787 to 1779. [2021-11-13 18:07:57,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1779 states, 1772 states have (on average 1.3876975169300225) internal successors, (2459), 1778 states have internal predecessors, (2459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:07:57,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 2459 transitions. [2021-11-13 18:07:57,844 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 2459 transitions. Word has length 64 [2021-11-13 18:07:57,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:07:57,845 INFO L470 AbstractCegarLoop]: Abstraction has 1779 states and 2459 transitions. [2021-11-13 18:07:57,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:07:57,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 2459 transitions. [2021-11-13 18:07:57,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-13 18:07:57,850 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:07:57,850 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:07:57,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 18:07:57,851 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 18:07:57,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:07:57,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1913482263, now seen corresponding path program 1 times [2021-11-13 18:07:57,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:07:57,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041711309] [2021-11-13 18:07:57,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:07:57,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:07:57,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:07:57,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:07:57,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:07:57,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041711309] [2021-11-13 18:07:57,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041711309] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:07:57,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:07:57,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:07:57,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632101789] [2021-11-13 18:07:57,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:07:57,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:07:57,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:07:57,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:07:57,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:07:57,944 INFO L87 Difference]: Start difference. First operand 1779 states and 2459 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:07:58,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:07:58,129 INFO L93 Difference]: Finished difference Result 4129 states and 5823 transitions. [2021-11-13 18:07:58,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:07:58,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-13 18:07:58,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:07:58,151 INFO L225 Difference]: With dead ends: 4129 [2021-11-13 18:07:58,151 INFO L226 Difference]: Without dead ends: 2953 [2021-11-13 18:07:58,155 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 [2021-11-13 18:07:58,156 INFO L933 BasicCegarLoop]: 1422 mSDtfsCounter, 897 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 2140 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.49ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.09ms IncrementalHoareTripleChecker+Time [2021-11-13 18:07:58,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [897 Valid, 2140 Invalid, 15 Unknown, 0 Unchecked, 6.49ms Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 27.09ms Time] [2021-11-13 18:07:58,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2953 states. [2021-11-13 18:07:58,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2953 to 2941. [2021-11-13 18:07:58,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2941 states, 2934 states have (on average 1.3895705521472392) internal successors, (4077), 2940 states have internal predecessors, (4077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:07:58,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2941 states to 2941 states and 4077 transitions. [2021-11-13 18:07:58,405 INFO L78 Accepts]: Start accepts. Automaton has 2941 states and 4077 transitions. Word has length 65 [2021-11-13 18:07:58,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:07:58,405 INFO L470 AbstractCegarLoop]: Abstraction has 2941 states and 4077 transitions. [2021-11-13 18:07:58,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:07:58,406 INFO L276 IsEmpty]: Start isEmpty. Operand 2941 states and 4077 transitions. [2021-11-13 18:07:58,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-13 18:07:58,412 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:07:58,412 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:07:58,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 18:07:58,413 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 18:07:58,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:07:58,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1759204869, now seen corresponding path program 1 times [2021-11-13 18:07:58,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:07:58,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271566912] [2021-11-13 18:07:58,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:07:58,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:07:58,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:07:58,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:07:58,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:07:58,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271566912] [2021-11-13 18:07:58,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271566912] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:07:58,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:07:58,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:07:58,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553344850] [2021-11-13 18:07:58,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:07:58,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:07:58,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:07:58,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:07:58,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:07:58,570 INFO L87 Difference]: Start difference. First operand 2941 states and 4077 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:07:59,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:07:59,735 INFO L93 Difference]: Finished difference Result 5812 states and 8153 transitions. [2021-11-13 18:07:59,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:07:59,736 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-13 18:07:59,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:07:59,793 INFO L225 Difference]: With dead ends: 5812 [2021-11-13 18:07:59,793 INFO L226 Difference]: Without dead ends: 3476 [2021-11-13 18:07:59,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:07:59,799 INFO L933 BasicCegarLoop]: 569 mSDtfsCounter, 3047 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 645.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3047 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.19ms SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 837.56ms IncrementalHoareTripleChecker+Time [2021-11-13 18:07:59,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3047 Valid, 696 Invalid, 541 Unknown, 0 Unchecked, 18.19ms Time], IncrementalHoareTripleChecker [79 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 837.56ms Time] [2021-11-13 18:07:59,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3476 states. [2021-11-13 18:08:00,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3476 to 3460. [2021-11-13 18:08:00,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3460 states, 3453 states have (on average 1.3828554879814654) internal successors, (4775), 3459 states have internal predecessors, (4775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:08:00,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3460 states to 3460 states and 4775 transitions. [2021-11-13 18:08:00,111 INFO L78 Accepts]: Start accepts. Automaton has 3460 states and 4775 transitions. Word has length 65 [2021-11-13 18:08:00,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:08:00,112 INFO L470 AbstractCegarLoop]: Abstraction has 3460 states and 4775 transitions. [2021-11-13 18:08:00,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:08:00,115 INFO L276 IsEmpty]: Start isEmpty. Operand 3460 states and 4775 transitions. [2021-11-13 18:08:00,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-13 18:08:00,122 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:08:00,122 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:08:00,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 18:08:00,123 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 18:08:00,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:08:00,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1773849621, now seen corresponding path program 1 times [2021-11-13 18:08:00,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:08:00,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466762201] [2021-11-13 18:08:00,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:08:00,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:08:00,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:08:00,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:08:00,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:08:00,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466762201] [2021-11-13 18:08:00,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466762201] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:08:00,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:08:00,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:08:00,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955648545] [2021-11-13 18:08:00,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:08:00,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:08:00,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:08:00,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:08:00,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:08:00,297 INFO L87 Difference]: Start difference. First operand 3460 states and 4775 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:08:01,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:08:01,324 INFO L93 Difference]: Finished difference Result 8470 states and 11935 transitions. [2021-11-13 18:08:01,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:08:01,325 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-13 18:08:01,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:08:01,365 INFO L225 Difference]: With dead ends: 8470 [2021-11-13 18:08:01,365 INFO L226 Difference]: Without dead ends: 5300 [2021-11-13 18:08:01,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:08:01,378 INFO L933 BasicCegarLoop]: 488 mSDtfsCounter, 2724 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 467.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2724 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.34ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 575.55ms IncrementalHoareTripleChecker+Time [2021-11-13 18:08:01,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2724 Valid, 645 Invalid, 397 Unknown, 0 Unchecked, 16.34ms Time], IncrementalHoareTripleChecker [18 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 575.55ms Time] [2021-11-13 18:08:01,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5300 states. [2021-11-13 18:08:01,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5300 to 5292. [2021-11-13 18:08:01,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5292 states, 5285 states have (on average 1.4081362346263009) internal successors, (7442), 5291 states have internal predecessors, (7442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:08:01,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5292 states to 5292 states and 7442 transitions. [2021-11-13 18:08:01,802 INFO L78 Accepts]: Start accepts. Automaton has 5292 states and 7442 transitions. Word has length 65 [2021-11-13 18:08:01,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:08:01,804 INFO L470 AbstractCegarLoop]: Abstraction has 5292 states and 7442 transitions. [2021-11-13 18:08:01,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:08:01,804 INFO L276 IsEmpty]: Start isEmpty. Operand 5292 states and 7442 transitions. [2021-11-13 18:08:01,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-13 18:08:01,810 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:08:01,811 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:08:01,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 18:08:01,811 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 18:08:01,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:08:01,812 INFO L85 PathProgramCache]: Analyzing trace with hash -2076438910, now seen corresponding path program 1 times [2021-11-13 18:08:01,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:08:01,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229107445] [2021-11-13 18:08:01,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:08:01,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:08:01,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:08:01,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:08:01,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:08:01,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229107445] [2021-11-13 18:08:01,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229107445] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:08:01,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:08:01,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:08:01,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655241611] [2021-11-13 18:08:01,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:08:01,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:08:01,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:08:01,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:08:01,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:08:01,922 INFO L87 Difference]: Start difference. First operand 5292 states and 7442 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:08:02,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:08:02,385 INFO L93 Difference]: Finished difference Result 11472 states and 16248 transitions. [2021-11-13 18:08:02,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:08:02,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-13 18:08:02,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:08:02,433 INFO L225 Difference]: With dead ends: 11472 [2021-11-13 18:08:02,434 INFO L226 Difference]: Without dead ends: 7315 [2021-11-13 18:08:02,441 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 [2021-11-13 18:08:02,443 INFO L933 BasicCegarLoop]: 964 mSDtfsCounter, 585 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 1532 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.02ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.14ms IncrementalHoareTripleChecker+Time [2021-11-13 18:08:02,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [585 Valid, 1532 Invalid, 21 Unknown, 0 Unchecked, 5.02ms Time], IncrementalHoareTripleChecker [9 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 32.14ms Time] [2021-11-13 18:08:02,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7315 states. [2021-11-13 18:08:02,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7315 to 7283. [2021-11-13 18:08:03,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7283 states, 7276 states have (on average 1.3845519516217701) internal successors, (10074), 7282 states have internal predecessors, (10074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:08:03,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7283 states to 7283 states and 10074 transitions. [2021-11-13 18:08:03,031 INFO L78 Accepts]: Start accepts. Automaton has 7283 states and 10074 transitions. Word has length 66 [2021-11-13 18:08:03,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:08:03,031 INFO L470 AbstractCegarLoop]: Abstraction has 7283 states and 10074 transitions. [2021-11-13 18:08:03,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:08:03,033 INFO L276 IsEmpty]: Start isEmpty. Operand 7283 states and 10074 transitions. [2021-11-13 18:08:03,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-13 18:08:03,041 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:08:03,041 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:08:03,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 18:08:03,042 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 18:08:03,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:08:03,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1790108590, now seen corresponding path program 1 times [2021-11-13 18:08:03,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:08:03,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286330335] [2021-11-13 18:08:03,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:08:03,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:08:03,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:08:03,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:08:03,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:08:03,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286330335] [2021-11-13 18:08:03,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286330335] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:08:03,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:08:03,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:08:03,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388574789] [2021-11-13 18:08:03,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:08:03,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:08:03,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:08:03,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:08:03,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:08:03,141 INFO L87 Difference]: Start difference. First operand 7283 states and 10074 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:08:04,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:08:04,373 INFO L93 Difference]: Finished difference Result 16628 states and 23145 transitions. [2021-11-13 18:08:04,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:08:04,374 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-13 18:08:04,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:08:04,437 INFO L225 Difference]: With dead ends: 16628 [2021-11-13 18:08:04,438 INFO L226 Difference]: Without dead ends: 9782 [2021-11-13 18:08:04,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:08:04,452 INFO L933 BasicCegarLoop]: 431 mSDtfsCounter, 2380 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 352.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2380 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.87ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 440.62ms IncrementalHoareTripleChecker+Time [2021-11-13 18:08:04,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2380 Valid, 580 Invalid, 364 Unknown, 0 Unchecked, 10.87ms Time], IncrementalHoareTripleChecker [27 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 440.62ms Time] [2021-11-13 18:08:04,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9782 states. [2021-11-13 18:08:05,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9782 to 9738. [2021-11-13 18:08:05,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9738 states, 9731 states have (on average 1.3830027746377556) internal successors, (13458), 9737 states have internal predecessors, (13458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:08:05,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9738 states to 9738 states and 13458 transitions. [2021-11-13 18:08:05,222 INFO L78 Accepts]: Start accepts. Automaton has 9738 states and 13458 transitions. Word has length 67 [2021-11-13 18:08:05,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:08:05,223 INFO L470 AbstractCegarLoop]: Abstraction has 9738 states and 13458 transitions. [2021-11-13 18:08:05,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:08:05,223 INFO L276 IsEmpty]: Start isEmpty. Operand 9738 states and 13458 transitions. [2021-11-13 18:08:05,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-13 18:08:05,235 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:08:05,236 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:08:05,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-13 18:08:05,236 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 18:08:05,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:08:05,237 INFO L85 PathProgramCache]: Analyzing trace with hash 185593086, now seen corresponding path program 1 times [2021-11-13 18:08:05,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:08:05,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74144159] [2021-11-13 18:08:05,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:08:05,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:08:05,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:08:05,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:08:05,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:08:05,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74144159] [2021-11-13 18:08:05,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74144159] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:08:05,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:08:05,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:08:05,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340027888] [2021-11-13 18:08:05,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:08:05,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:08:05,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:08:05,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:08:05,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:08:05,389 INFO L87 Difference]: Start difference. First operand 9738 states and 13458 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:08:09,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:08:09,556 INFO L93 Difference]: Finished difference Result 48544 states and 68425 transitions. [2021-11-13 18:08:09,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 18:08:09,557 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-13 18:08:09,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:08:09,735 INFO L225 Difference]: With dead ends: 48544 [2021-11-13 18:08:09,735 INFO L226 Difference]: Without dead ends: 44893 [2021-11-13 18:08:09,852 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 [2021-11-13 18:08:09,855 INFO L933 BasicCegarLoop]: 444 mSDtfsCounter, 4966 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 726.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4966 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.89ms SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 891.49ms IncrementalHoareTripleChecker+Time [2021-11-13 18:08:09,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4966 Valid, 1133 Invalid, 957 Unknown, 0 Unchecked, 26.89ms Time], IncrementalHoareTripleChecker [269 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 891.49ms Time] [2021-11-13 18:08:09,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44893 states. [2021-11-13 18:08:11,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44893 to 9806. [2021-11-13 18:08:11,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9806 states, 9799 states have (on average 1.3823859577507909) internal successors, (13546), 9805 states have internal predecessors, (13546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:08:11,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9806 states to 9806 states and 13546 transitions. [2021-11-13 18:08:11,683 INFO L78 Accepts]: Start accepts. Automaton has 9806 states and 13546 transitions. Word has length 68 [2021-11-13 18:08:11,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:08:11,683 INFO L470 AbstractCegarLoop]: Abstraction has 9806 states and 13546 transitions. [2021-11-13 18:08:11,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:08:11,684 INFO L276 IsEmpty]: Start isEmpty. Operand 9806 states and 13546 transitions. [2021-11-13 18:08:11,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-13 18:08:11,695 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:08:11,695 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:08:11,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-13 18:08:11,696 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 18:08:11,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:08:11,697 INFO L85 PathProgramCache]: Analyzing trace with hash 290423248, now seen corresponding path program 1 times [2021-11-13 18:08:11,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:08:11,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604166304] [2021-11-13 18:08:11,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:08:11,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:08:11,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:08:11,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:08:11,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:08:11,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604166304] [2021-11-13 18:08:11,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604166304] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:08:11,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:08:11,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:08:11,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800661789] [2021-11-13 18:08:11,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:08:11,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:08:11,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:08:11,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:08:11,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:08:11,878 INFO L87 Difference]: Start difference. First operand 9806 states and 13546 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:08:16,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:08:16,870 INFO L93 Difference]: Finished difference Result 44431 states and 62454 transitions. [2021-11-13 18:08:16,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 18:08:16,871 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-13 18:08:16,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:08:16,993 INFO L225 Difference]: With dead ends: 44431 [2021-11-13 18:08:16,993 INFO L226 Difference]: Without dead ends: 39789 [2021-11-13 18:08:17,016 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 [2021-11-13 18:08:17,017 INFO L933 BasicCegarLoop]: 440 mSDtfsCounter, 4506 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 690.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4506 SdHoareTripleChecker+Valid, 1119 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.96ms SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 889.66ms IncrementalHoareTripleChecker+Time [2021-11-13 18:08:17,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4506 Valid, 1119 Invalid, 969 Unknown, 0 Unchecked, 16.96ms Time], IncrementalHoareTripleChecker [271 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 889.66ms Time] [2021-11-13 18:08:17,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39789 states. [2021-11-13 18:08:18,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39789 to 9962. [2021-11-13 18:08:18,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9962 states, 9955 states have (on average 1.381416373681567) internal successors, (13752), 9961 states have internal predecessors, (13752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:08:18,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9962 states to 9962 states and 13752 transitions. [2021-11-13 18:08:18,918 INFO L78 Accepts]: Start accepts. Automaton has 9962 states and 13752 transitions. Word has length 68 [2021-11-13 18:08:18,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:08:18,919 INFO L470 AbstractCegarLoop]: Abstraction has 9962 states and 13752 transitions. [2021-11-13 18:08:18,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:08:18,919 INFO L276 IsEmpty]: Start isEmpty. Operand 9962 states and 13752 transitions. [2021-11-13 18:08:18,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-13 18:08:18,934 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:08:18,934 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:08:18,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-13 18:08:18,935 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 18:08:18,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:08:18,936 INFO L85 PathProgramCache]: Analyzing trace with hash -770234336, now seen corresponding path program 1 times [2021-11-13 18:08:18,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:08:18,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342362137] [2021-11-13 18:08:18,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:08:18,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:08:18,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:08:19,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:08:19,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:08:19,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342362137] [2021-11-13 18:08:19,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342362137] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:08:19,080 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:08:19,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:08:19,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622709988] [2021-11-13 18:08:19,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:08:19,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:08:19,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:08:19,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:08:19,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:08:19,083 INFO L87 Difference]: Start difference. First operand 9962 states and 13752 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:08:24,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:08:24,040 INFO L93 Difference]: Finished difference Result 38801 states and 54418 transitions. [2021-11-13 18:08:24,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 18:08:24,041 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-13 18:08:24,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:08:24,108 INFO L225 Difference]: With dead ends: 38801 [2021-11-13 18:08:24,108 INFO L226 Difference]: Without dead ends: 34525 [2021-11-13 18:08:24,121 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 [2021-11-13 18:08:24,122 INFO L933 BasicCegarLoop]: 481 mSDtfsCounter, 3226 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 874 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 772.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3226 SdHoareTripleChecker+Valid, 1245 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.68ms SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 964.45ms IncrementalHoareTripleChecker+Time [2021-11-13 18:08:24,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3226 Valid, 1245 Invalid, 1141 Unknown, 0 Unchecked, 12.68ms Time], IncrementalHoareTripleChecker [267 Valid, 874 Invalid, 0 Unknown, 0 Unchecked, 964.45ms Time] [2021-11-13 18:08:24,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34525 states. [2021-11-13 18:08:25,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34525 to 10033. [2021-11-13 18:08:25,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10033 states, 10026 states have (on average 1.381508078994614) internal successors, (13851), 10032 states have internal predecessors, (13851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:08:25,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10033 states to 10033 states and 13851 transitions. [2021-11-13 18:08:25,645 INFO L78 Accepts]: Start accepts. Automaton has 10033 states and 13851 transitions. Word has length 68 [2021-11-13 18:08:25,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:08:25,645 INFO L470 AbstractCegarLoop]: Abstraction has 10033 states and 13851 transitions. [2021-11-13 18:08:25,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:08:25,646 INFO L276 IsEmpty]: Start isEmpty. Operand 10033 states and 13851 transitions. [2021-11-13 18:08:25,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-13 18:08:25,660 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:08:25,660 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:08:25,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-13 18:08:25,661 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 18:08:25,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:08:25,661 INFO L85 PathProgramCache]: Analyzing trace with hash -2053099389, now seen corresponding path program 1 times [2021-11-13 18:08:25,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:08:25,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558494879] [2021-11-13 18:08:25,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:08:25,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:08:25,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:08:25,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:08:25,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:08:25,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558494879] [2021-11-13 18:08:25,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558494879] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:08:25,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:08:25,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:08:25,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981853014] [2021-11-13 18:08:25,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:08:25,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:08:25,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:08:25,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:08:25,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:08:25,784 INFO L87 Difference]: Start difference. First operand 10033 states and 13851 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:08:30,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:08:30,367 INFO L93 Difference]: Finished difference Result 35361 states and 49278 transitions. [2021-11-13 18:08:30,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 18:08:30,368 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-13 18:08:30,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:08:30,421 INFO L225 Difference]: With dead ends: 35361 [2021-11-13 18:08:30,421 INFO L226 Difference]: Without dead ends: 30619 [2021-11-13 18:08:30,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-11-13 18:08:30,441 INFO L933 BasicCegarLoop]: 450 mSDtfsCounter, 4359 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 560.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4359 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.83ms SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 705.35ms IncrementalHoareTripleChecker+Time [2021-11-13 18:08:30,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4359 Valid, 1072 Invalid, 866 Unknown, 0 Unchecked, 10.83ms Time], IncrementalHoareTripleChecker [267 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 705.35ms Time] [2021-11-13 18:08:30,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30619 states. [2021-11-13 18:08:31,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30619 to 10068. [2021-11-13 18:08:31,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10068 states, 10061 states have (on average 1.3811748335155551) internal successors, (13896), 10067 states have internal predecessors, (13896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:08:31,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10068 states to 10068 states and 13896 transitions. [2021-11-13 18:08:31,837 INFO L78 Accepts]: Start accepts. Automaton has 10068 states and 13896 transitions. Word has length 68 [2021-11-13 18:08:31,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:08:31,837 INFO L470 AbstractCegarLoop]: Abstraction has 10068 states and 13896 transitions. [2021-11-13 18:08:31,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:08:31,838 INFO L276 IsEmpty]: Start isEmpty. Operand 10068 states and 13896 transitions. [2021-11-13 18:08:31,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-13 18:08:31,849 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:08:31,849 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:08:31,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-13 18:08:31,850 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 18:08:31,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:08:31,850 INFO L85 PathProgramCache]: Analyzing trace with hash 43383936, now seen corresponding path program 1 times [2021-11-13 18:08:31,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:08:31,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179326486] [2021-11-13 18:08:31,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:08:31,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:08:31,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:08:32,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:08:32,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:08:32,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179326486] [2021-11-13 18:08:32,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179326486] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:08:32,029 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:08:32,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:08:32,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382051370] [2021-11-13 18:08:32,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:08:32,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:08:32,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:08:32,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:08:32,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:08:32,031 INFO L87 Difference]: Start difference. First operand 10068 states and 13896 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:08:35,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:08:35,682 INFO L93 Difference]: Finished difference Result 28150 states and 39531 transitions. [2021-11-13 18:08:35,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:08:35,682 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-13 18:08:35,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:08:35,709 INFO L225 Difference]: With dead ends: 28150 [2021-11-13 18:08:35,709 INFO L226 Difference]: Without dead ends: 21017 [2021-11-13 18:08:35,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-11-13 18:08:35,719 INFO L933 BasicCegarLoop]: 515 mSDtfsCounter, 3411 mSDsluCounter, 1336 mSDsCounter, 0 mSdLazyCounter, 1311 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 740.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3411 SdHoareTripleChecker+Valid, 1851 SdHoareTripleChecker+Invalid, 1348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.19ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 918.19ms IncrementalHoareTripleChecker+Time [2021-11-13 18:08:35,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3411 Valid, 1851 Invalid, 1348 Unknown, 0 Unchecked, 13.19ms Time], IncrementalHoareTripleChecker [37 Valid, 1311 Invalid, 0 Unknown, 0 Unchecked, 918.19ms Time] [2021-11-13 18:08:35,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21017 states. [2021-11-13 18:08:36,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21017 to 9762. [2021-11-13 18:08:36,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9762 states, 9755 states have (on average 1.380112762685802) internal successors, (13463), 9761 states have internal predecessors, (13463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:08:36,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9762 states to 9762 states and 13463 transitions. [2021-11-13 18:08:36,835 INFO L78 Accepts]: Start accepts. Automaton has 9762 states and 13463 transitions. Word has length 69 [2021-11-13 18:08:36,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:08:36,835 INFO L470 AbstractCegarLoop]: Abstraction has 9762 states and 13463 transitions. [2021-11-13 18:08:36,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:08:36,836 INFO L276 IsEmpty]: Start isEmpty. Operand 9762 states and 13463 transitions. [2021-11-13 18:08:36,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-13 18:08:36,844 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:08:36,844 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:08:36,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-13 18:08:36,845 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 18:08:36,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:08:36,845 INFO L85 PathProgramCache]: Analyzing trace with hash 80806030, now seen corresponding path program 1 times [2021-11-13 18:08:36,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:08:36,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021548177] [2021-11-13 18:08:36,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:08:36,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:08:36,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:08:37,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:08:37,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:08:37,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021548177] [2021-11-13 18:08:37,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021548177] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:08:37,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:08:37,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 18:08:37,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093257966] [2021-11-13 18:08:37,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:08:37,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 18:08:37,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:08:37,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 18:08:37,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:08:37,016 INFO L87 Difference]: Start difference. First operand 9762 states and 13463 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:08:40,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:08:40,547 INFO L93 Difference]: Finished difference Result 28774 states and 40449 transitions. [2021-11-13 18:08:40,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 18:08:40,548 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-13 18:08:40,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:08:40,572 INFO L225 Difference]: With dead ends: 28774 [2021-11-13 18:08:40,572 INFO L226 Difference]: Without dead ends: 22099 [2021-11-13 18:08:40,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-11-13 18:08:40,583 INFO L933 BasicCegarLoop]: 504 mSDtfsCounter, 3254 mSDsluCounter, 1923 mSDsCounter, 0 mSdLazyCounter, 1560 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 683.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3254 SdHoareTripleChecker+Valid, 2427 SdHoareTripleChecker+Invalid, 1674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.82ms SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 841.69ms IncrementalHoareTripleChecker+Time [2021-11-13 18:08:40,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3254 Valid, 2427 Invalid, 1674 Unknown, 0 Unchecked, 9.82ms Time], IncrementalHoareTripleChecker [114 Valid, 1560 Invalid, 0 Unknown, 0 Unchecked, 841.69ms Time] [2021-11-13 18:08:40,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22099 states. [2021-11-13 18:08:41,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22099 to 9627. [2021-11-13 18:08:41,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9627 states, 9620 states have (on average 1.3798336798336799) internal successors, (13274), 9626 states have internal predecessors, (13274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:08:41,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9627 states to 9627 states and 13274 transitions. [2021-11-13 18:08:41,733 INFO L78 Accepts]: Start accepts. Automaton has 9627 states and 13274 transitions. Word has length 69 [2021-11-13 18:08:41,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:08:41,733 INFO L470 AbstractCegarLoop]: Abstraction has 9627 states and 13274 transitions. [2021-11-13 18:08:41,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:08:41,733 INFO L276 IsEmpty]: Start isEmpty. Operand 9627 states and 13274 transitions. [2021-11-13 18:08:41,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-13 18:08:41,740 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:08:41,741 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:08:41,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-13 18:08:41,741 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 18:08:41,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:08:41,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1560265185, now seen corresponding path program 1 times [2021-11-13 18:08:41,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:08:41,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349750291] [2021-11-13 18:08:41,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:08:41,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:08:41,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:08:41,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:08:41,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:08:41,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349750291] [2021-11-13 18:08:41,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349750291] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:08:41,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:08:41,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 18:08:41,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311591080] [2021-11-13 18:08:41,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:08:41,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 18:08:41,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:08:41,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 18:08:41,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:08:41,872 INFO L87 Difference]: Start difference. First operand 9627 states and 13274 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:08:46,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:08:46,285 INFO L93 Difference]: Finished difference Result 32205 states and 45405 transitions. [2021-11-13 18:08:46,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 18:08:46,286 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-13 18:08:46,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:08:46,320 INFO L225 Difference]: With dead ends: 32205 [2021-11-13 18:08:46,320 INFO L226 Difference]: Without dead ends: 25754 [2021-11-13 18:08:46,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-11-13 18:08:46,333 INFO L933 BasicCegarLoop]: 543 mSDtfsCounter, 2816 mSDsluCounter, 1617 mSDsCounter, 0 mSdLazyCounter, 1382 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 638.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2816 SdHoareTripleChecker+Valid, 2160 SdHoareTripleChecker+Invalid, 1484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.20ms SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 790.59ms IncrementalHoareTripleChecker+Time [2021-11-13 18:08:46,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2816 Valid, 2160 Invalid, 1484 Unknown, 0 Unchecked, 10.20ms Time], IncrementalHoareTripleChecker [102 Valid, 1382 Invalid, 0 Unknown, 0 Unchecked, 790.59ms Time] [2021-11-13 18:08:46,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25754 states. [2021-11-13 18:08:47,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25754 to 9603. [2021-11-13 18:08:47,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9603 states, 9596 states have (on average 1.3792205085452272) internal successors, (13235), 9602 states have internal predecessors, (13235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:08:47,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9603 states to 9603 states and 13235 transitions. [2021-11-13 18:08:47,646 INFO L78 Accepts]: Start accepts. Automaton has 9603 states and 13235 transitions. Word has length 69 [2021-11-13 18:08:47,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:08:47,646 INFO L470 AbstractCegarLoop]: Abstraction has 9603 states and 13235 transitions. [2021-11-13 18:08:47,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:08:47,646 INFO L276 IsEmpty]: Start isEmpty. Operand 9603 states and 13235 transitions. [2021-11-13 18:08:47,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-13 18:08:47,653 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:08:47,653 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:08:47,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-13 18:08:47,654 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 18:08:47,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:08:47,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1474423363, now seen corresponding path program 1 times [2021-11-13 18:08:47,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:08:47,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8093653] [2021-11-13 18:08:47,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:08:47,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:08:47,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:08:47,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:08:47,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:08:47,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8093653] [2021-11-13 18:08:47,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8093653] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:08:47,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:08:47,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 18:08:47,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206858120] [2021-11-13 18:08:47,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:08:47,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 18:08:47,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:08:47,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 18:08:47,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:08:47,804 INFO L87 Difference]: Start difference. First operand 9603 states and 13235 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:08:52,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:08:52,482 INFO L93 Difference]: Finished difference Result 31995 states and 45096 transitions. [2021-11-13 18:08:52,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 18:08:52,483 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-13 18:08:52,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:08:52,518 INFO L225 Difference]: With dead ends: 31995 [2021-11-13 18:08:52,518 INFO L226 Difference]: Without dead ends: 25571 [2021-11-13 18:08:52,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-11-13 18:08:52,532 INFO L933 BasicCegarLoop]: 547 mSDtfsCounter, 2755 mSDsluCounter, 1645 mSDsCounter, 0 mSdLazyCounter, 1452 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 603.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2755 SdHoareTripleChecker+Valid, 2192 SdHoareTripleChecker+Invalid, 1542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.97ms SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 753.50ms IncrementalHoareTripleChecker+Time [2021-11-13 18:08:52,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2755 Valid, 2192 Invalid, 1542 Unknown, 0 Unchecked, 7.97ms Time], IncrementalHoareTripleChecker [90 Valid, 1452 Invalid, 0 Unknown, 0 Unchecked, 753.50ms Time] [2021-11-13 18:08:52,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25571 states. [2021-11-13 18:08:54,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25571 to 9591. [2021-11-13 18:08:54,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9591 states, 9584 states have (on average 1.3785475792988313) internal successors, (13212), 9590 states have internal predecessors, (13212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:08:54,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9591 states to 9591 states and 13212 transitions. [2021-11-13 18:08:54,126 INFO L78 Accepts]: Start accepts. Automaton has 9591 states and 13212 transitions. Word has length 69 [2021-11-13 18:08:54,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:08:54,126 INFO L470 AbstractCegarLoop]: Abstraction has 9591 states and 13212 transitions. [2021-11-13 18:08:54,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:08:54,127 INFO L276 IsEmpty]: Start isEmpty. Operand 9591 states and 13212 transitions. [2021-11-13 18:08:54,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-13 18:08:54,135 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:08:54,136 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] [2021-11-13 18:08:54,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-13 18:08:54,136 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 18:08:54,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:08:54,137 INFO L85 PathProgramCache]: Analyzing trace with hash -688548458, now seen corresponding path program 1 times [2021-11-13 18:08:54,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:08:54,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704366940] [2021-11-13 18:08:54,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:08:54,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:08:54,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:08:54,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:08:54,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:08:54,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704366940] [2021-11-13 18:08:54,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704366940] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:08:54,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:08:54,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-13 18:08:54,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28700134] [2021-11-13 18:08:54,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:08:54,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 18:08:54,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:08:54,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 18:08:54,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-13 18:08:54,548 INFO L87 Difference]: Start difference. First operand 9591 states and 13212 transitions. Second operand has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:09:04,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:09:04,732 INFO L93 Difference]: Finished difference Result 48695 states and 69134 transitions. [2021-11-13 18:09:04,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-13 18:09:04,738 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2021-11-13 18:09:04,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:09:04,840 INFO L225 Difference]: With dead ends: 48695 [2021-11-13 18:09:04,840 INFO L226 Difference]: Without dead ends: 42274 [2021-11-13 18:09:04,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2021-11-13 18:09:04,859 INFO L933 BasicCegarLoop]: 855 mSDtfsCounter, 3819 mSDsluCounter, 4732 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 837.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3819 SdHoareTripleChecker+Valid, 5587 SdHoareTripleChecker+Invalid, 1333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.67ms SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1014.10ms IncrementalHoareTripleChecker+Time [2021-11-13 18:09:04,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3819 Valid, 5587 Invalid, 1333 Unknown, 0 Unchecked, 20.67ms Time], IncrementalHoareTripleChecker [117 Valid, 1216 Invalid, 0 Unknown, 0 Unchecked, 1014.10ms Time] [2021-11-13 18:09:04,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42274 states. [2021-11-13 18:09:06,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42274 to 9571. [2021-11-13 18:09:06,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9571 states, 9565 states have (on average 1.377417668583377) internal successors, (13175), 9570 states have internal predecessors, (13175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:09:06,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9571 states to 9571 states and 13175 transitions. [2021-11-13 18:09:06,772 INFO L78 Accepts]: Start accepts. Automaton has 9571 states and 13175 transitions. Word has length 70 [2021-11-13 18:09:06,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:09:06,772 INFO L470 AbstractCegarLoop]: Abstraction has 9571 states and 13175 transitions. [2021-11-13 18:09:06,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:09:06,772 INFO L276 IsEmpty]: Start isEmpty. Operand 9571 states and 13175 transitions. [2021-11-13 18:09:06,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-13 18:09:06,780 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:09:06,780 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] [2021-11-13 18:09:06,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-13 18:09:06,781 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 18:09:06,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:09:06,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1142484158, now seen corresponding path program 1 times [2021-11-13 18:09:06,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:09:06,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282865086] [2021-11-13 18:09:06,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:09:06,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:09:06,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:07,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:09:07,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:09:07,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282865086] [2021-11-13 18:09:07,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282865086] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:09:07,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:09:07,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-13 18:09:07,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278387044] [2021-11-13 18:09:07,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:09:07,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 18:09:07,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:09:07,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 18:09:07,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:09:07,184 INFO L87 Difference]: Start difference. First operand 9571 states and 13175 transitions. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:09:20,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:09:20,152 INFO L93 Difference]: Finished difference Result 52023 states and 73417 transitions. [2021-11-13 18:09:20,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-13 18:09:20,154 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2021-11-13 18:09:20,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:09:20,243 INFO L225 Difference]: With dead ends: 52023 [2021-11-13 18:09:20,243 INFO L226 Difference]: Without dead ends: 45346 [2021-11-13 18:09:20,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2021-11-13 18:09:20,259 INFO L933 BasicCegarLoop]: 1124 mSDtfsCounter, 6207 mSDsluCounter, 3525 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 682.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6207 SdHoareTripleChecker+Valid, 4649 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.02ms SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 849.88ms IncrementalHoareTripleChecker+Time [2021-11-13 18:09:20,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6207 Valid, 4649 Invalid, 929 Unknown, 0 Unchecked, 20.02ms Time], IncrementalHoareTripleChecker [74 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 849.88ms Time] [2021-11-13 18:09:20,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45346 states. [2021-11-13 18:09:22,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45346 to 9322. [2021-11-13 18:09:22,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9322 states, 9317 states have (on average 1.3754427390791026) internal successors, (12815), 9321 states have internal predecessors, (12815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:09:22,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9322 states to 9322 states and 12815 transitions. [2021-11-13 18:09:22,934 INFO L78 Accepts]: Start accepts. Automaton has 9322 states and 12815 transitions. Word has length 70 [2021-11-13 18:09:22,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:09:22,934 INFO L470 AbstractCegarLoop]: Abstraction has 9322 states and 12815 transitions. [2021-11-13 18:09:22,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:09:22,935 INFO L276 IsEmpty]: Start isEmpty. Operand 9322 states and 12815 transitions. [2021-11-13 18:09:22,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-13 18:09:22,942 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:09:22,942 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] [2021-11-13 18:09:22,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-13 18:09:22,942 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 18:09:22,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:09:22,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1346201798, now seen corresponding path program 1 times [2021-11-13 18:09:22,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:09:22,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176175405] [2021-11-13 18:09:22,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:09:22,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:09:22,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:23,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:09:23,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:09:23,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176175405] [2021-11-13 18:09:23,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176175405] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:09:23,011 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:09:23,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:09:23,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683524685] [2021-11-13 18:09:23,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:09:23,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:09:23,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:09:23,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:09:23,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:09:23,013 INFO L87 Difference]: Start difference. First operand 9322 states and 12815 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:09:25,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:09:25,453 INFO L93 Difference]: Finished difference Result 13044 states and 18007 transitions. [2021-11-13 18:09:25,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:09:25,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2021-11-13 18:09:25,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:09:25,466 INFO L225 Difference]: With dead ends: 13044 [2021-11-13 18:09:25,466 INFO L226 Difference]: Without dead ends: 9328 [2021-11-13 18:09:25,471 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 [2021-11-13 18:09:25,472 INFO L933 BasicCegarLoop]: 812 mSDtfsCounter, 428 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 1357 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.81ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.93ms IncrementalHoareTripleChecker+Time [2021-11-13 18:09:25,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [428 Valid, 1357 Invalid, 12 Unknown, 0 Unchecked, 3.81ms Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 21.93ms Time] [2021-11-13 18:09:25,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9328 states. [2021-11-13 18:09:27,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9328 to 9322. [2021-11-13 18:09:27,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9322 states, 9317 states have (on average 1.3622410647204035) internal successors, (12692), 9321 states have internal predecessors, (12692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:09:27,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9322 states to 9322 states and 12692 transitions. [2021-11-13 18:09:27,706 INFO L78 Accepts]: Start accepts. Automaton has 9322 states and 12692 transitions. Word has length 70 [2021-11-13 18:09:27,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:09:27,706 INFO L470 AbstractCegarLoop]: Abstraction has 9322 states and 12692 transitions. [2021-11-13 18:09:27,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:09:27,707 INFO L276 IsEmpty]: Start isEmpty. Operand 9322 states and 12692 transitions. [2021-11-13 18:09:27,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-13 18:09:27,714 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:09:27,714 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] [2021-11-13 18:09:27,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-13 18:09:27,714 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 18:09:27,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:09:27,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1360936426, now seen corresponding path program 1 times [2021-11-13 18:09:27,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:09:27,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064976288] [2021-11-13 18:09:27,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:09:27,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:09:27,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:28,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:09:28,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:09:28,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064976288] [2021-11-13 18:09:28,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064976288] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:09:28,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:09:28,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-13 18:09:28,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752606412] [2021-11-13 18:09:28,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:09:28,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 18:09:28,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:09:28,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 18:09:28,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-13 18:09:28,177 INFO L87 Difference]: Start difference. First operand 9322 states and 12692 transitions. Second operand has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:09:37,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:09:37,727 INFO L93 Difference]: Finished difference Result 35238 states and 49051 transitions. [2021-11-13 18:09:37,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-13 18:09:37,727 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2021-11-13 18:09:37,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:09:37,779 INFO L225 Difference]: With dead ends: 35238 [2021-11-13 18:09:37,779 INFO L226 Difference]: Without dead ends: 28446 [2021-11-13 18:09:37,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2021-11-13 18:09:37,792 INFO L933 BasicCegarLoop]: 875 mSDtfsCounter, 3416 mSDsluCounter, 5045 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 626.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3416 SdHoareTripleChecker+Valid, 5920 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.72ms SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 761.28ms IncrementalHoareTripleChecker+Time [2021-11-13 18:09:37,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3416 Valid, 5920 Invalid, 931 Unknown, 0 Unchecked, 18.72ms Time], IncrementalHoareTripleChecker [120 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 761.28ms Time] [2021-11-13 18:09:37,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28446 states. [2021-11-13 18:09:40,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28446 to 8925. [2021-11-13 18:09:40,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8925 states, 8922 states have (on average 1.3635956063662855) internal successors, (12166), 8924 states have internal predecessors, (12166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:09:40,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8925 states to 8925 states and 12166 transitions. [2021-11-13 18:09:40,630 INFO L78 Accepts]: Start accepts. Automaton has 8925 states and 12166 transitions. Word has length 70 [2021-11-13 18:09:40,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:09:40,631 INFO L470 AbstractCegarLoop]: Abstraction has 8925 states and 12166 transitions. [2021-11-13 18:09:40,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:09:40,631 INFO L276 IsEmpty]: Start isEmpty. Operand 8925 states and 12166 transitions. [2021-11-13 18:09:40,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-13 18:09:40,639 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:09:40,640 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:09:40,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-13 18:09:40,640 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 18:09:40,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:09:40,641 INFO L85 PathProgramCache]: Analyzing trace with hash -452169058, now seen corresponding path program 1 times [2021-11-13 18:09:40,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:09:40,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326113486] [2021-11-13 18:09:40,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:09:40,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:09:40,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:40,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:09:40,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:09:40,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326113486] [2021-11-13 18:09:40,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326113486] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:09:40,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:09:40,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:09:40,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761695995] [2021-11-13 18:09:40,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:09:40,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:09:40,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:09:40,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:09:40,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:09:40,716 INFO L87 Difference]: Start difference. First operand 8925 states and 12166 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:09:44,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:09:44,484 INFO L93 Difference]: Finished difference Result 18405 states and 25335 transitions. [2021-11-13 18:09:44,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:09:44,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-13 18:09:44,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:09:44,511 INFO L225 Difference]: With dead ends: 18405 [2021-11-13 18:09:44,511 INFO L226 Difference]: Without dead ends: 12892 [2021-11-13 18:09:44,518 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 [2021-11-13 18:09:44,519 INFO L933 BasicCegarLoop]: 386 mSDtfsCounter, 381 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 71.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.58ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 90.22ms IncrementalHoareTripleChecker+Time [2021-11-13 18:09:44,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [381 Valid, 528 Invalid, 84 Unknown, 0 Unchecked, 2.58ms Time], IncrementalHoareTripleChecker [14 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 90.22ms Time] [2021-11-13 18:09:44,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12892 states. [2021-11-13 18:09:48,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12892 to 12854. [2021-11-13 18:09:48,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12854 states, 12853 states have (on average 1.38131175601027) internal successors, (17754), 12853 states have internal predecessors, (17754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:09:48,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12854 states to 12854 states and 17754 transitions. [2021-11-13 18:09:48,188 INFO L78 Accepts]: Start accepts. Automaton has 12854 states and 17754 transitions. Word has length 72 [2021-11-13 18:09:48,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:09:48,189 INFO L470 AbstractCegarLoop]: Abstraction has 12854 states and 17754 transitions. [2021-11-13 18:09:48,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:09:48,189 INFO L276 IsEmpty]: Start isEmpty. Operand 12854 states and 17754 transitions. [2021-11-13 18:09:48,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-13 18:09:48,201 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:09:48,202 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:09:48,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-13 18:09:48,202 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 18:09:48,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:09:48,203 INFO L85 PathProgramCache]: Analyzing trace with hash -786160929, now seen corresponding path program 1 times [2021-11-13 18:09:48,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:09:48,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004452010] [2021-11-13 18:09:48,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:09:48,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:09:48,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:48,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:09:48,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:09:48,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004452010] [2021-11-13 18:09:48,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004452010] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:09:48,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:09:48,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:09:48,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091836660] [2021-11-13 18:09:48,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:09:48,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:09:48,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:09:48,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:09:48,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:09:48,307 INFO L87 Difference]: Start difference. First operand 12854 states and 17754 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:10:04,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:10:04,186 INFO L93 Difference]: Finished difference Result 60276 states and 85196 transitions. [2021-11-13 18:10:04,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:10:04,189 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-13 18:10:04,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:10:04,271 INFO L225 Difference]: With dead ends: 60276 [2021-11-13 18:10:04,271 INFO L226 Difference]: Without dead ends: 49753 [2021-11-13 18:10:04,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:10:04,285 INFO L933 BasicCegarLoop]: 408 mSDtfsCounter, 2053 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 71.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2053 SdHoareTripleChecker+Valid, 1224 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.04ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 86.58ms IncrementalHoareTripleChecker+Time [2021-11-13 18:10:04,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2053 Valid, 1224 Invalid, 94 Unknown, 0 Unchecked, 5.04ms Time], IncrementalHoareTripleChecker [5 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 86.58ms Time] [2021-11-13 18:10:04,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49753 states. [2021-11-13 18:10:11,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49753 to 23375. [2021-11-13 18:10:11,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23375 states, 23374 states have (on average 1.38423034140498) internal successors, (32355), 23374 states have internal predecessors, (32355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:10:11,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23375 states to 23375 states and 32355 transitions. [2021-11-13 18:10:11,769 INFO L78 Accepts]: Start accepts. Automaton has 23375 states and 32355 transitions. Word has length 86 [2021-11-13 18:10:11,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:10:11,770 INFO L470 AbstractCegarLoop]: Abstraction has 23375 states and 32355 transitions. [2021-11-13 18:10:11,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:10:11,770 INFO L276 IsEmpty]: Start isEmpty. Operand 23375 states and 32355 transitions. [2021-11-13 18:10:11,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-13 18:10:11,790 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:10:11,791 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:10:11,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-13 18:10:11,791 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 18:10:11,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:10:11,792 INFO L85 PathProgramCache]: Analyzing trace with hash 623918678, now seen corresponding path program 1 times [2021-11-13 18:10:11,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:10:11,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265373204] [2021-11-13 18:10:11,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:10:11,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:10:11,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:11,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:10:11,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:10:11,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265373204] [2021-11-13 18:10:11,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265373204] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:10:11,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:10:11,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:10:11,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605546661] [2021-11-13 18:10:11,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:10:11,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:10:11,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:10:11,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:10:11,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:10:11,912 INFO L87 Difference]: Start difference. First operand 23375 states and 32355 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:10:20,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:10:20,233 INFO L93 Difference]: Finished difference Result 38287 states and 52891 transitions. [2021-11-13 18:10:20,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:10:20,233 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-13 18:10:20,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:10:20,274 INFO L225 Difference]: With dead ends: 38287 [2021-11-13 18:10:20,274 INFO L226 Difference]: Without dead ends: 25474 [2021-11-13 18:10:20,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:10:20,292 INFO L933 BasicCegarLoop]: 657 mSDtfsCounter, 1064 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 188.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1064 SdHoareTripleChecker+Valid, 1471 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.52ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 331.71ms IncrementalHoareTripleChecker+Time [2021-11-13 18:10:20,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1064 Valid, 1471 Invalid, 224 Unknown, 0 Unchecked, 5.52ms Time], IncrementalHoareTripleChecker [38 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 331.71ms Time] [2021-11-13 18:10:20,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25474 states. [2021-11-13 18:10:26,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25474 to 18418. [2021-11-13 18:10:26,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18418 states, 18417 states have (on average 1.3623825813107455) internal successors, (25091), 18417 states have internal predecessors, (25091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:10:26,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18418 states to 18418 states and 25091 transitions. [2021-11-13 18:10:26,815 INFO L78 Accepts]: Start accepts. Automaton has 18418 states and 25091 transitions. Word has length 87 [2021-11-13 18:10:26,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:10:26,815 INFO L470 AbstractCegarLoop]: Abstraction has 18418 states and 25091 transitions. [2021-11-13 18:10:26,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:10:26,816 INFO L276 IsEmpty]: Start isEmpty. Operand 18418 states and 25091 transitions. [2021-11-13 18:10:26,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-13 18:10:26,842 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:10:26,842 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:10:26,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-13 18:10:26,843 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 18:10:26,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:10:26,843 INFO L85 PathProgramCache]: Analyzing trace with hash 803271302, now seen corresponding path program 1 times [2021-11-13 18:10:26,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:10:26,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379586498] [2021-11-13 18:10:26,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:10:26,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:10:26,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:26,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:10:26,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:10:26,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379586498] [2021-11-13 18:10:26,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379586498] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:10:26,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:10:26,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:10:26,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901512253] [2021-11-13 18:10:26,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:10:26,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:10:26,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:10:26,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:10:26,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:10:26,938 INFO L87 Difference]: Start difference. First operand 18418 states and 25091 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)