./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 f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4382eb4-5bb8-4528-a69d-0ca65ba0d4c2/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4382eb4-5bb8-4528-a69d-0ca65ba0d4c2/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4382eb4-5bb8-4528-a69d-0ca65ba0d4c2/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4382eb4-5bb8-4528-a69d-0ca65ba0d4c2/bin/uautomizer-IVEQpCNsaX/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_a4382eb4-5bb8-4528-a69d-0ca65ba0d4c2/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4382eb4-5bb8-4528-a69d-0ca65ba0d4c2/bin/uautomizer-IVEQpCNsaX --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-f8e1c90 [2021-11-09 09:18:39,721 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:18:39,723 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:18:39,762 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:18:39,762 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:18:39,764 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:18:39,766 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:18:39,769 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:18:39,771 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:18:39,773 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:18:39,774 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:18:39,776 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:18:39,777 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:18:39,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:18:39,780 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:18:39,782 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:18:39,783 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:18:39,785 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:18:39,788 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:18:39,791 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:18:39,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:18:39,795 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:18:39,796 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:18:39,797 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:18:39,802 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:18:39,802 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:18:39,803 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:18:39,804 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:18:39,805 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:18:39,806 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:18:39,806 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:18:39,807 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:18:39,808 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:18:39,809 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:18:39,811 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:18:39,811 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:18:39,812 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:18:39,813 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:18:39,813 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:18:39,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:18:39,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:18:39,817 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4382eb4-5bb8-4528-a69d-0ca65ba0d4c2/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 09:18:39,859 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:18:39,860 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:18:39,861 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:18:39,861 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:18:39,868 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:18:39,869 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:18:39,869 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:18:39,869 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:18:39,869 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:18:39,869 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:18:39,870 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:18:39,870 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:18:39,870 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 09:18:39,870 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:18:39,870 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 09:18:39,870 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:18:39,871 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 09:18:39,871 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:18:39,871 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 09:18:39,871 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:18:39,871 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:18:39,872 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:18:39,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:18:39,872 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:18:39,872 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:18:39,872 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 09:18:39,873 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 09:18:39,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 09:18:39,873 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 09:18:39,873 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 09:18:39,873 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 09:18:39,873 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:18:39,874 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_a4382eb4-5bb8-4528-a69d-0ca65ba0d4c2/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4382eb4-5bb8-4528-a69d-0ca65ba0d4c2/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> afa96f494675daaffb7cf8ecfbe30f06e1bb06b9219ecf3df6181ac4e4f076f6 [2021-11-09 09:18:40,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:18:40,204 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:18:40,207 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:18:40,209 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:18:40,210 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:18:40,211 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4382eb4-5bb8-4528-a69d-0ca65ba0d4c2/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2021-11-09 09:18:40,288 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4382eb4-5bb8-4528-a69d-0ca65ba0d4c2/bin/uautomizer-IVEQpCNsaX/data/363bed9c2/f6d2b5a44aaf49a38fca899c7f04dae1/FLAGfe0698300 [2021-11-09 09:18:41,097 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:18:41,100 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4382eb4-5bb8-4528-a69d-0ca65ba0d4c2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2021-11-09 09:18:41,143 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4382eb4-5bb8-4528-a69d-0ca65ba0d4c2/bin/uautomizer-IVEQpCNsaX/data/363bed9c2/f6d2b5a44aaf49a38fca899c7f04dae1/FLAGfe0698300 [2021-11-09 09:18:41,175 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4382eb4-5bb8-4528-a69d-0ca65ba0d4c2/bin/uautomizer-IVEQpCNsaX/data/363bed9c2/f6d2b5a44aaf49a38fca899c7f04dae1 [2021-11-09 09:18:41,180 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:18:41,183 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 09:18:41,185 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:18:41,185 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:18:41,189 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:18:41,189 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:18:41" (1/1) ... [2021-11-09 09:18:41,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5eaed4c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:18:41, skipping insertion in model container [2021-11-09 09:18:41,192 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:18:41" (1/1) ... [2021-11-09 09:18:41,199 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:18:41,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:18:41,794 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_a4382eb4-5bb8-4528-a69d-0ca65ba0d4c2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[12460,12473] [2021-11-09 09:18:41,842 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_a4382eb4-5bb8-4528-a69d-0ca65ba0d4c2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[19746,19759] [2021-11-09 09:18:41,858 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_a4382eb4-5bb8-4528-a69d-0ca65ba0d4c2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[22098,22111] [2021-11-09 09:18:41,866 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_a4382eb4-5bb8-4528-a69d-0ca65ba0d4c2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[23218,23231] [2021-11-09 09:18:41,888 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_a4382eb4-5bb8-4528-a69d-0ca65ba0d4c2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[26768,26781] [2021-11-09 09:18:41,896 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_a4382eb4-5bb8-4528-a69d-0ca65ba0d4c2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[27891,27904] [2021-11-09 09:18:41,910 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_a4382eb4-5bb8-4528-a69d-0ca65ba0d4c2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[30206,30219] [2021-11-09 09:18:42,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:18:42,502 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:18:42,595 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_a4382eb4-5bb8-4528-a69d-0ca65ba0d4c2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[12460,12473] [2021-11-09 09:18:42,614 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_a4382eb4-5bb8-4528-a69d-0ca65ba0d4c2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[19746,19759] [2021-11-09 09:18:42,622 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_a4382eb4-5bb8-4528-a69d-0ca65ba0d4c2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[22098,22111] [2021-11-09 09:18:42,627 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_a4382eb4-5bb8-4528-a69d-0ca65ba0d4c2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[23218,23231] [2021-11-09 09:18:42,638 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_a4382eb4-5bb8-4528-a69d-0ca65ba0d4c2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[26768,26781] [2021-11-09 09:18:42,643 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_a4382eb4-5bb8-4528-a69d-0ca65ba0d4c2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[27891,27904] [2021-11-09 09:18:42,651 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_a4382eb4-5bb8-4528-a69d-0ca65ba0d4c2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[30206,30219] [2021-11-09 09:18:42,981 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:18:43,006 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:18:43,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:18:43 WrapperNode [2021-11-09 09:18:43,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:18:43,008 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 09:18:43,008 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 09:18:43,009 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 09:18:43,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:18:43" (1/1) ... [2021-11-09 09:18:43,070 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:18:43" (1/1) ... [2021-11-09 09:18:43,219 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 09:18:43,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:18:43,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:18:43,220 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:18:43,229 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:18:43" (1/1) ... [2021-11-09 09:18:43,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:18:43" (1/1) ... [2021-11-09 09:18:43,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:18:43" (1/1) ... [2021-11-09 09:18:43,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:18:43" (1/1) ... [2021-11-09 09:18:43,320 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:18:43" (1/1) ... [2021-11-09 09:18:43,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:18:43" (1/1) ... [2021-11-09 09:18:43,370 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:18:43" (1/1) ... [2021-11-09 09:18:43,393 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:18:43,395 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:18:43,395 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:18:43,395 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:18:43,397 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:18:43" (1/1) ... [2021-11-09 09:18:43,406 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:18:43,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4382eb4-5bb8-4528-a69d-0ca65ba0d4c2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:18:43,433 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4382eb4-5bb8-4528-a69d-0ca65ba0d4c2/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:18:43,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4382eb4-5bb8-4528-a69d-0ca65ba0d4c2/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:18:43,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 09:18:43,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 09:18:43,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:18:43,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:18:46,975 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:18:46,975 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-09 09:18:46,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:18:46 BoogieIcfgContainer [2021-11-09 09:18:46,979 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:18:46,981 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:18:46,982 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:18:46,985 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:18:46,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:18:41" (1/3) ... [2021-11-09 09:18:46,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e2eeaab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:18:46, skipping insertion in model container [2021-11-09 09:18:46,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:18:43" (2/3) ... [2021-11-09 09:18:46,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e2eeaab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:18:46, skipping insertion in model container [2021-11-09 09:18:46,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:18:46" (3/3) ... [2021-11-09 09:18:46,989 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2021-11-09 09:18:46,995 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:18:46,996 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-09 09:18:47,051 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:18:47,058 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 [2021-11-09 09:18:47,058 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-09 09:18:47,098 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) [2021-11-09 09:18:47,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-09 09:18:47,178 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:18:47,179 INFO L513 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] [2021-11-09 09:18:47,179 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)] === [2021-11-09 09:18:47,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:18:47,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1160265217, now seen corresponding path program 1 times [2021-11-09 09:18:47,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:18:47,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55025622] [2021-11-09 09:18:47,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:18:47,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:18:47,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:18:47,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:18:47,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:18:47,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55025622] [2021-11-09 09:18:47,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55025622] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:18:47,706 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:18:47,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:18:47,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216912804] [2021-11-09 09:18:47,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:18:47,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:18:47,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:18:47,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:18:47,739 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) [2021-11-09 09:18:48,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:18:48,013 INFO L93 Difference]: Finished difference Result 1465 states and 2651 transitions. [2021-11-09 09:18:48,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:18:48,015 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 [2021-11-09 09:18:48,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:18:48,044 INFO L225 Difference]: With dead ends: 1465 [2021-11-09 09:18:48,044 INFO L226 Difference]: Without dead ends: 1288 [2021-11-09 09:18:48,049 INFO L786 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 [2021-11-09 09:18:48,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2021-11-09 09:18:48,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1280. [2021-11-09 09:18:48,178 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) [2021-11-09 09:18:48,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1676 transitions. [2021-11-09 09:18:48,185 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1676 transitions. Word has length 64 [2021-11-09 09:18:48,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:18:48,186 INFO L470 AbstractCegarLoop]: Abstraction has 1280 states and 1676 transitions. [2021-11-09 09:18:48,187 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) [2021-11-09 09:18:48,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1676 transitions. [2021-11-09 09:18:48,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-09 09:18:48,193 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:18:48,194 INFO L513 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] [2021-11-09 09:18:48,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 09:18:48,195 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)] === [2021-11-09 09:18:48,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:18:48,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1978887998, now seen corresponding path program 1 times [2021-11-09 09:18:48,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:18:48,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064238262] [2021-11-09 09:18:48,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:18:48,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:18:48,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:18:48,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:18:48,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:18:48,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064238262] [2021-11-09 09:18:48,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064238262] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:18:48,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:18:48,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:18:48,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720706756] [2021-11-09 09:18:48,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:18:48,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:18:48,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:18:48,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:18:48,368 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) [2021-11-09 09:18:48,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:18:48,470 INFO L93 Difference]: Finished difference Result 1930 states and 2622 transitions. [2021-11-09 09:18:48,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:18:48,471 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 [2021-11-09 09:18:48,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:18:48,481 INFO L225 Difference]: With dead ends: 1930 [2021-11-09 09:18:48,481 INFO L226 Difference]: Without dead ends: 1576 [2021-11-09 09:18:48,484 INFO L786 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 [2021-11-09 09:18:48,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2021-11-09 09:18:48,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 1568. [2021-11-09 09:18:48,532 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) [2021-11-09 09:18:48,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 2092 transitions. [2021-11-09 09:18:48,538 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 2092 transitions. Word has length 64 [2021-11-09 09:18:48,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:18:48,539 INFO L470 AbstractCegarLoop]: Abstraction has 1568 states and 2092 transitions. [2021-11-09 09:18:48,539 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) [2021-11-09 09:18:48,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 2092 transitions. [2021-11-09 09:18:48,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-09 09:18:48,543 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:18:48,543 INFO L513 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] [2021-11-09 09:18:48,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 09:18:48,544 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)] === [2021-11-09 09:18:48,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:18:48,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1566940908, now seen corresponding path program 1 times [2021-11-09 09:18:48,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:18:48,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129552985] [2021-11-09 09:18:48,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:18:48,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:18:48,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:18:48,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:18:48,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:18:48,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129552985] [2021-11-09 09:18:48,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129552985] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:18:48,662 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:18:48,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:18:48,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911486528] [2021-11-09 09:18:48,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:18:48,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:18:48,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:18:48,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:18:48,665 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) [2021-11-09 09:18:49,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:18:49,442 INFO L93 Difference]: Finished difference Result 3046 states and 4188 transitions. [2021-11-09 09:18:49,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:18:49,443 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 [2021-11-09 09:18:49,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:18:49,454 INFO L225 Difference]: With dead ends: 3046 [2021-11-09 09:18:49,454 INFO L226 Difference]: Without dead ends: 1787 [2021-11-09 09:18:49,456 INFO L786 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 [2021-11-09 09:18:49,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1787 states. [2021-11-09 09:18:49,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1787 to 1779. [2021-11-09 09:18:49,527 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) [2021-11-09 09:18:49,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 2459 transitions. [2021-11-09 09:18:49,534 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 2459 transitions. Word has length 64 [2021-11-09 09:18:49,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:18:49,535 INFO L470 AbstractCegarLoop]: Abstraction has 1779 states and 2459 transitions. [2021-11-09 09:18:49,535 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) [2021-11-09 09:18:49,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 2459 transitions. [2021-11-09 09:18:49,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-09 09:18:49,539 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:18:49,539 INFO L513 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] [2021-11-09 09:18:49,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 09:18:49,540 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)] === [2021-11-09 09:18:49,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:18:49,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1913482263, now seen corresponding path program 1 times [2021-11-09 09:18:49,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:18:49,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551942693] [2021-11-09 09:18:49,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:18:49,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:18:49,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:18:49,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:18:49,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:18:49,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551942693] [2021-11-09 09:18:49,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551942693] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:18:49,614 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:18:49,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:18:49,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520923461] [2021-11-09 09:18:49,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:18:49,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:18:49,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:18:49,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:18:49,616 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) [2021-11-09 09:18:49,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:18:49,754 INFO L93 Difference]: Finished difference Result 4129 states and 5823 transitions. [2021-11-09 09:18:49,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:18:49,755 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 [2021-11-09 09:18:49,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:18:49,771 INFO L225 Difference]: With dead ends: 4129 [2021-11-09 09:18:49,772 INFO L226 Difference]: Without dead ends: 2953 [2021-11-09 09:18:49,774 INFO L786 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 [2021-11-09 09:18:49,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2953 states. [2021-11-09 09:18:49,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2953 to 2941. [2021-11-09 09:18:49,942 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) [2021-11-09 09:18:49,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2941 states to 2941 states and 4077 transitions. [2021-11-09 09:18:49,954 INFO L78 Accepts]: Start accepts. Automaton has 2941 states and 4077 transitions. Word has length 65 [2021-11-09 09:18:49,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:18:49,955 INFO L470 AbstractCegarLoop]: Abstraction has 2941 states and 4077 transitions. [2021-11-09 09:18:49,955 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) [2021-11-09 09:18:49,955 INFO L276 IsEmpty]: Start isEmpty. Operand 2941 states and 4077 transitions. [2021-11-09 09:18:49,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-09 09:18:49,960 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:18:49,960 INFO L513 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] [2021-11-09 09:18:49,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 09:18:49,961 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)] === [2021-11-09 09:18:49,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:18:49,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1759204869, now seen corresponding path program 1 times [2021-11-09 09:18:49,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:18:49,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870090756] [2021-11-09 09:18:49,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:18:49,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:18:50,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:18:50,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:18:50,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:18:50,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870090756] [2021-11-09 09:18:50,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870090756] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:18:50,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:18:50,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:18:50,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112102062] [2021-11-09 09:18:50,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:18:50,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:18:50,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:18:50,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:18:50,082 INFO L87 Difference]: Start difference. First operand 2941 states and 4077 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 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) [2021-11-09 09:18:50,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:18:50,987 INFO L93 Difference]: Finished difference Result 6972 states and 9828 transitions. [2021-11-09 09:18:50,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:18:50,988 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 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 [2021-11-09 09:18:50,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:18:51,016 INFO L225 Difference]: With dead ends: 6972 [2021-11-09 09:18:51,017 INFO L226 Difference]: Without dead ends: 4636 [2021-11-09 09:18:51,021 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:18:51,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4636 states. [2021-11-09 09:18:51,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4636 to 4604. [2021-11-09 09:18:51,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4604 states, 4597 states have (on average 1.4004785729823799) internal successors, (6438), 4603 states have internal predecessors, (6438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:18:51,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4604 states to 4604 states and 6438 transitions. [2021-11-09 09:18:51,337 INFO L78 Accepts]: Start accepts. Automaton has 4604 states and 6438 transitions. Word has length 65 [2021-11-09 09:18:51,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:18:51,338 INFO L470 AbstractCegarLoop]: Abstraction has 4604 states and 6438 transitions. [2021-11-09 09:18:51,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 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) [2021-11-09 09:18:51,338 INFO L276 IsEmpty]: Start isEmpty. Operand 4604 states and 6438 transitions. [2021-11-09 09:18:51,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-09 09:18:51,344 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:18:51,344 INFO L513 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] [2021-11-09 09:18:51,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 09:18:51,345 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)] === [2021-11-09 09:18:51,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:18:51,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1773849621, now seen corresponding path program 1 times [2021-11-09 09:18:51,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:18:51,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799238256] [2021-11-09 09:18:51,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:18:51,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:18:51,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:18:51,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:18:51,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:18:51,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799238256] [2021-11-09 09:18:51,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799238256] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:18:51,438 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:18:51,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:18:51,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129486382] [2021-11-09 09:18:51,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:18:51,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:18:51,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:18:51,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:18:51,440 INFO L87 Difference]: Start difference. First operand 4604 states and 6438 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) [2021-11-09 09:18:52,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:18:52,351 INFO L93 Difference]: Finished difference Result 10212 states and 14454 transitions. [2021-11-09 09:18:52,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:18:52,352 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 [2021-11-09 09:18:52,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:18:52,389 INFO L225 Difference]: With dead ends: 10212 [2021-11-09 09:18:52,389 INFO L226 Difference]: Without dead ends: 6042 [2021-11-09 09:18:52,398 INFO L786 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 [2021-11-09 09:18:52,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6042 states. [2021-11-09 09:18:52,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6042 to 6014. [2021-11-09 09:18:52,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6014 states, 6007 states have (on average 1.4073580822373897) internal successors, (8454), 6013 states have internal predecessors, (8454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:18:52,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6014 states to 6014 states and 8454 transitions. [2021-11-09 09:18:52,861 INFO L78 Accepts]: Start accepts. Automaton has 6014 states and 8454 transitions. Word has length 65 [2021-11-09 09:18:52,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:18:52,861 INFO L470 AbstractCegarLoop]: Abstraction has 6014 states and 8454 transitions. [2021-11-09 09:18:52,861 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) [2021-11-09 09:18:52,862 INFO L276 IsEmpty]: Start isEmpty. Operand 6014 states and 8454 transitions. [2021-11-09 09:18:52,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-09 09:18:52,868 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:18:52,868 INFO L513 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] [2021-11-09 09:18:52,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-09 09:18:52,869 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:18:52,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:18:52,869 INFO L85 PathProgramCache]: Analyzing trace with hash 846328334, now seen corresponding path program 1 times [2021-11-09 09:18:52,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:18:52,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092897654] [2021-11-09 09:18:52,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:18:52,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:18:52,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:18:52,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:18:52,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:18:52,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092897654] [2021-11-09 09:18:52,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092897654] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:18:52,957 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:18:52,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:18:52,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223257090] [2021-11-09 09:18:52,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:18:52,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:18:52,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:18:52,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:18:52,960 INFO L87 Difference]: Start difference. First operand 6014 states and 8454 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 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) [2021-11-09 09:18:54,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:18:54,009 INFO L93 Difference]: Finished difference Result 16173 states and 23031 transitions. [2021-11-09 09:18:54,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:18:54,010 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 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 [2021-11-09 09:18:54,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:18:54,068 INFO L225 Difference]: With dead ends: 16173 [2021-11-09 09:18:54,069 INFO L226 Difference]: Without dead ends: 10398 [2021-11-09 09:18:54,078 INFO L786 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 [2021-11-09 09:18:54,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10398 states. [2021-11-09 09:18:54,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10398 to 10390. [2021-11-09 09:18:54,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10390 states, 10383 states have (on average 1.4180872580179138) internal successors, (14724), 10389 states have internal predecessors, (14724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:18:54,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10390 states to 10390 states and 14724 transitions. [2021-11-09 09:18:54,797 INFO L78 Accepts]: Start accepts. Automaton has 10390 states and 14724 transitions. Word has length 66 [2021-11-09 09:18:54,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:18:54,798 INFO L470 AbstractCegarLoop]: Abstraction has 10390 states and 14724 transitions. [2021-11-09 09:18:54,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 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) [2021-11-09 09:18:54,798 INFO L276 IsEmpty]: Start isEmpty. Operand 10390 states and 14724 transitions. [2021-11-09 09:18:54,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-09 09:18:54,805 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:18:54,805 INFO L513 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] [2021-11-09 09:18:54,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-09 09:18:54,805 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:18:54,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:18:54,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1426246713, now seen corresponding path program 1 times [2021-11-09 09:18:54,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:18:54,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315227012] [2021-11-09 09:18:54,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:18:54,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:18:54,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:18:54,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:18:54,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:18:54,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315227012] [2021-11-09 09:18:54,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315227012] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:18:54,871 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:18:54,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:18:54,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022406902] [2021-11-09 09:18:54,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:18:54,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:18:54,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:18:54,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:18:54,874 INFO L87 Difference]: Start difference. First operand 10390 states and 14724 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 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) [2021-11-09 09:18:55,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:18:55,653 INFO L93 Difference]: Finished difference Result 23372 states and 33224 transitions. [2021-11-09 09:18:55,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:18:55,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 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 [2021-11-09 09:18:55,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:18:55,692 INFO L225 Difference]: With dead ends: 23372 [2021-11-09 09:18:55,692 INFO L226 Difference]: Without dead ends: 14243 [2021-11-09 09:18:55,706 INFO L786 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 [2021-11-09 09:18:55,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14243 states. [2021-11-09 09:18:56,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14243 to 14175. [2021-11-09 09:18:56,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14175 states, 14168 states have (on average 1.3916572557876905) internal successors, (19717), 14174 states have internal predecessors, (19717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:18:56,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14175 states to 14175 states and 19717 transitions. [2021-11-09 09:18:56,622 INFO L78 Accepts]: Start accepts. Automaton has 14175 states and 19717 transitions. Word has length 67 [2021-11-09 09:18:56,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:18:56,622 INFO L470 AbstractCegarLoop]: Abstraction has 14175 states and 19717 transitions. [2021-11-09 09:18:56,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 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) [2021-11-09 09:18:56,623 INFO L276 IsEmpty]: Start isEmpty. Operand 14175 states and 19717 transitions. [2021-11-09 09:18:56,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-09 09:18:56,633 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:18:56,634 INFO L513 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] [2021-11-09 09:18:56,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-09 09:18:56,634 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)] === [2021-11-09 09:18:56,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:18:56,635 INFO L85 PathProgramCache]: Analyzing trace with hash 185593086, now seen corresponding path program 1 times [2021-11-09 09:18:56,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:18:56,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227785988] [2021-11-09 09:18:56,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:18:56,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:18:56,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:18:56,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:18:56,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:18:56,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227785988] [2021-11-09 09:18:56,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227785988] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:18:56,776 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:18:56,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 09:18:56,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979281924] [2021-11-09 09:18:56,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 09:18:56,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:18:56,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 09:18:56,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:18:56,781 INFO L87 Difference]: Start difference. First operand 14175 states and 19717 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) [2021-11-09 09:19:00,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:00,908 INFO L93 Difference]: Finished difference Result 76519 states and 108304 transitions. [2021-11-09 09:19:00,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 09:19:00,909 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 [2021-11-09 09:19:00,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:01,121 INFO L225 Difference]: With dead ends: 76519 [2021-11-09 09:19:01,121 INFO L226 Difference]: Without dead ends: 70792 [2021-11-09 09:19:01,149 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-11-09 09:19:01,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70792 states. [2021-11-09 09:19:03,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70792 to 14243. [2021-11-09 09:19:03,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14243 states, 14236 states have (on average 1.391191345883675) internal successors, (19805), 14242 states have internal predecessors, (19805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:19:03,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14243 states to 14243 states and 19805 transitions. [2021-11-09 09:19:03,072 INFO L78 Accepts]: Start accepts. Automaton has 14243 states and 19805 transitions. Word has length 68 [2021-11-09 09:19:03,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:03,072 INFO L470 AbstractCegarLoop]: Abstraction has 14243 states and 19805 transitions. [2021-11-09 09:19:03,073 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) [2021-11-09 09:19:03,073 INFO L276 IsEmpty]: Start isEmpty. Operand 14243 states and 19805 transitions. [2021-11-09 09:19:03,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-09 09:19:03,083 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:03,083 INFO L513 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] [2021-11-09 09:19:03,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-09 09:19:03,084 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)] === [2021-11-09 09:19:03,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:03,084 INFO L85 PathProgramCache]: Analyzing trace with hash 290423248, now seen corresponding path program 1 times [2021-11-09 09:19:03,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:03,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742217325] [2021-11-09 09:19:03,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:03,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:03,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:03,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:19:03,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:03,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742217325] [2021-11-09 09:19:03,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742217325] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:19:03,185 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:19:03,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 09:19:03,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853086647] [2021-11-09 09:19:03,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 09:19:03,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:03,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 09:19:03,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:19:03,187 INFO L87 Difference]: Start difference. First operand 14243 states and 19805 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) [2021-11-09 09:19:08,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:08,952 INFO L93 Difference]: Finished difference Result 69634 states and 98339 transitions. [2021-11-09 09:19:08,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 09:19:08,953 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 [2021-11-09 09:19:08,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:09,083 INFO L225 Difference]: With dead ends: 69634 [2021-11-09 09:19:09,083 INFO L226 Difference]: Without dead ends: 62236 [2021-11-09 09:19:09,103 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-11-09 09:19:09,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62236 states. [2021-11-09 09:19:10,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62236 to 14399. [2021-11-09 09:19:10,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14399 states, 14392 states have (on average 1.3904252362423568) internal successors, (20011), 14398 states have internal predecessors, (20011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:19:10,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14399 states to 14399 states and 20011 transitions. [2021-11-09 09:19:10,675 INFO L78 Accepts]: Start accepts. Automaton has 14399 states and 20011 transitions. Word has length 68 [2021-11-09 09:19:10,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:10,675 INFO L470 AbstractCegarLoop]: Abstraction has 14399 states and 20011 transitions. [2021-11-09 09:19:10,675 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) [2021-11-09 09:19:10,676 INFO L276 IsEmpty]: Start isEmpty. Operand 14399 states and 20011 transitions. [2021-11-09 09:19:10,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-09 09:19:10,686 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:10,686 INFO L513 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] [2021-11-09 09:19:10,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-09 09:19:10,687 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)] === [2021-11-09 09:19:10,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:10,687 INFO L85 PathProgramCache]: Analyzing trace with hash -770234336, now seen corresponding path program 1 times [2021-11-09 09:19:10,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:10,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399817686] [2021-11-09 09:19:10,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:10,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:10,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:10,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:19:10,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:10,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399817686] [2021-11-09 09:19:10,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399817686] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:19:10,779 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:19:10,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 09:19:10,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145432299] [2021-11-09 09:19:10,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 09:19:10,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:10,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 09:19:10,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:19:10,781 INFO L87 Difference]: Start difference. First operand 14399 states and 20011 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) [2021-11-09 09:19:16,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:16,900 INFO L93 Difference]: Finished difference Result 60320 states and 84939 transitions. [2021-11-09 09:19:16,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 09:19:16,901 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 [2021-11-09 09:19:16,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:17,000 INFO L225 Difference]: With dead ends: 60320 [2021-11-09 09:19:17,000 INFO L226 Difference]: Without dead ends: 53368 [2021-11-09 09:19:17,022 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-11-09 09:19:17,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53368 states. [2021-11-09 09:19:19,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53368 to 14470. [2021-11-09 09:19:19,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14470 states, 14463 states have (on average 1.3904445827283414) internal successors, (20110), 14469 states have internal predecessors, (20110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:19:19,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14470 states to 14470 states and 20110 transitions. [2021-11-09 09:19:19,168 INFO L78 Accepts]: Start accepts. Automaton has 14470 states and 20110 transitions. Word has length 68 [2021-11-09 09:19:19,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:19,169 INFO L470 AbstractCegarLoop]: Abstraction has 14470 states and 20110 transitions. [2021-11-09 09:19:19,169 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) [2021-11-09 09:19:19,169 INFO L276 IsEmpty]: Start isEmpty. Operand 14470 states and 20110 transitions. [2021-11-09 09:19:19,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-09 09:19:19,180 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:19,180 INFO L513 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] [2021-11-09 09:19:19,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-09 09:19:19,181 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)] === [2021-11-09 09:19:19,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:19,181 INFO L85 PathProgramCache]: Analyzing trace with hash -2053099389, now seen corresponding path program 1 times [2021-11-09 09:19:19,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:19,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708949120] [2021-11-09 09:19:19,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:19,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:19,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:19,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:19:19,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:19,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708949120] [2021-11-09 09:19:19,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708949120] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:19:19,299 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:19:19,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 09:19:19,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205581340] [2021-11-09 09:19:19,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 09:19:19,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:19,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 09:19:19,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:19:19,301 INFO L87 Difference]: Start difference. First operand 14470 states and 20110 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) [2021-11-09 09:19:25,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:25,150 INFO L93 Difference]: Finished difference Result 50272 states and 70380 transitions. [2021-11-09 09:19:25,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 09:19:25,156 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 [2021-11-09 09:19:25,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:25,216 INFO L225 Difference]: With dead ends: 50272 [2021-11-09 09:19:25,216 INFO L226 Difference]: Without dead ends: 43613 [2021-11-09 09:19:25,234 INFO L786 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 [2021-11-09 09:19:25,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43613 states. [2021-11-09 09:19:26,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43613 to 14505. [2021-11-09 09:19:26,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14505 states, 14498 states have (on average 1.3901917505862877) internal successors, (20155), 14504 states have internal predecessors, (20155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:19:26,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14505 states to 14505 states and 20155 transitions. [2021-11-09 09:19:26,989 INFO L78 Accepts]: Start accepts. Automaton has 14505 states and 20155 transitions. Word has length 68 [2021-11-09 09:19:26,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:26,989 INFO L470 AbstractCegarLoop]: Abstraction has 14505 states and 20155 transitions. [2021-11-09 09:19:26,989 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) [2021-11-09 09:19:26,989 INFO L276 IsEmpty]: Start isEmpty. Operand 14505 states and 20155 transitions. [2021-11-09 09:19:26,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-09 09:19:26,999 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:26,999 INFO L513 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] [2021-11-09 09:19:26,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-09 09:19:26,999 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)] === [2021-11-09 09:19:27,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:27,000 INFO L85 PathProgramCache]: Analyzing trace with hash 43383936, now seen corresponding path program 1 times [2021-11-09 09:19:27,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:27,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718715794] [2021-11-09 09:19:27,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:27,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:27,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:27,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:19:27,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:27,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718715794] [2021-11-09 09:19:27,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718715794] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:19:27,190 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:19:27,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 09:19:27,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106963589] [2021-11-09 09:19:27,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 09:19:27,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:27,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 09:19:27,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:19:27,192 INFO L87 Difference]: Start difference. First operand 14505 states and 20155 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) [2021-11-09 09:19:31,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:31,809 INFO L93 Difference]: Finished difference Result 38407 states and 54225 transitions. [2021-11-09 09:19:31,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 09:19:31,810 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 [2021-11-09 09:19:31,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:31,854 INFO L225 Difference]: With dead ends: 38407 [2021-11-09 09:19:31,854 INFO L226 Difference]: Without dead ends: 27066 [2021-11-09 09:19:31,868 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-11-09 09:19:31,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27066 states. [2021-11-09 09:19:33,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27066 to 14120. [2021-11-09 09:19:33,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14120 states, 14113 states have (on average 1.3917664564585843) internal successors, (19642), 14119 states have internal predecessors, (19642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:19:33,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14120 states to 14120 states and 19642 transitions. [2021-11-09 09:19:33,630 INFO L78 Accepts]: Start accepts. Automaton has 14120 states and 19642 transitions. Word has length 69 [2021-11-09 09:19:33,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:33,630 INFO L470 AbstractCegarLoop]: Abstraction has 14120 states and 19642 transitions. [2021-11-09 09:19:33,631 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) [2021-11-09 09:19:33,631 INFO L276 IsEmpty]: Start isEmpty. Operand 14120 states and 19642 transitions. [2021-11-09 09:19:33,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-09 09:19:33,640 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:33,640 INFO L513 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] [2021-11-09 09:19:33,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-09 09:19:33,640 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)] === [2021-11-09 09:19:33,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:33,641 INFO L85 PathProgramCache]: Analyzing trace with hash 80806030, now seen corresponding path program 1 times [2021-11-09 09:19:33,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:33,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119640126] [2021-11-09 09:19:33,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:33,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:33,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:33,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:19:33,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:33,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119640126] [2021-11-09 09:19:33,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119640126] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:19:33,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:19:33,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 09:19:33,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797002882] [2021-11-09 09:19:33,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:19:33,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:33,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:19:33,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:19:33,793 INFO L87 Difference]: Start difference. First operand 14120 states and 19642 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) [2021-11-09 09:19:39,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:39,379 INFO L93 Difference]: Finished difference Result 45607 states and 64477 transitions. [2021-11-09 09:19:39,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 09:19:39,379 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 [2021-11-09 09:19:39,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:39,432 INFO L225 Difference]: With dead ends: 45607 [2021-11-09 09:19:39,432 INFO L226 Difference]: Without dead ends: 34844 [2021-11-09 09:19:39,444 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2021-11-09 09:19:39,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34844 states. [2021-11-09 09:19:41,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34844 to 13966. [2021-11-09 09:19:41,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13966 states, 13959 states have (on average 1.3921484347016262) internal successors, (19433), 13965 states have internal predecessors, (19433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:19:41,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13966 states to 13966 states and 19433 transitions. [2021-11-09 09:19:41,663 INFO L78 Accepts]: Start accepts. Automaton has 13966 states and 19433 transitions. Word has length 69 [2021-11-09 09:19:41,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:41,664 INFO L470 AbstractCegarLoop]: Abstraction has 13966 states and 19433 transitions. [2021-11-09 09:19:41,664 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) [2021-11-09 09:19:41,664 INFO L276 IsEmpty]: Start isEmpty. Operand 13966 states and 19433 transitions. [2021-11-09 09:19:41,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-09 09:19:41,671 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:41,671 INFO L513 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] [2021-11-09 09:19:41,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-09 09:19:41,671 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)] === [2021-11-09 09:19:41,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:41,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1560265185, now seen corresponding path program 1 times [2021-11-09 09:19:41,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:41,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994992250] [2021-11-09 09:19:41,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:41,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:41,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:41,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:19:41,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:41,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994992250] [2021-11-09 09:19:41,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994992250] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:19:41,870 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:19:41,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 09:19:41,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518235359] [2021-11-09 09:19:41,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:19:41,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:41,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:19:41,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:19:41,874 INFO L87 Difference]: Start difference. First operand 13966 states and 19433 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) [2021-11-09 09:19:51,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:19:51,509 INFO L93 Difference]: Finished difference Result 64519 states and 91555 transitions. [2021-11-09 09:19:51,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-09 09:19:51,510 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 [2021-11-09 09:19:51,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:19:51,591 INFO L225 Difference]: With dead ends: 64519 [2021-11-09 09:19:51,591 INFO L226 Difference]: Without dead ends: 54010 [2021-11-09 09:19:51,613 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2021-11-09 09:19:51,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54010 states. [2021-11-09 09:19:53,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54010 to 13938. [2021-11-09 09:19:54,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13938 states, 13931 states have (on average 1.3917880984853923) internal successors, (19389), 13937 states have internal predecessors, (19389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:19:54,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13938 states to 13938 states and 19389 transitions. [2021-11-09 09:19:54,026 INFO L78 Accepts]: Start accepts. Automaton has 13938 states and 19389 transitions. Word has length 69 [2021-11-09 09:19:54,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:19:54,026 INFO L470 AbstractCegarLoop]: Abstraction has 13938 states and 19389 transitions. [2021-11-09 09:19:54,026 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) [2021-11-09 09:19:54,026 INFO L276 IsEmpty]: Start isEmpty. Operand 13938 states and 19389 transitions. [2021-11-09 09:19:54,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-09 09:19:54,032 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:19:54,032 INFO L513 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] [2021-11-09 09:19:54,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-09 09:19:54,032 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)] === [2021-11-09 09:19:54,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:19:54,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1474423363, now seen corresponding path program 1 times [2021-11-09 09:19:54,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:19:54,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208982031] [2021-11-09 09:19:54,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:19:54,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:19:54,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:19:54,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:19:54,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:19:54,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208982031] [2021-11-09 09:19:54,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208982031] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:19:54,183 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:19:54,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 09:19:54,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689075678] [2021-11-09 09:19:54,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:19:54,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:19:54,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:19:54,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:19:54,185 INFO L87 Difference]: Start difference. First operand 13938 states and 19389 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) [2021-11-09 09:20:01,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:20:01,942 INFO L93 Difference]: Finished difference Result 50240 states and 71217 transitions. [2021-11-09 09:20:01,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 09:20:01,943 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 [2021-11-09 09:20:01,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:20:01,998 INFO L225 Difference]: With dead ends: 50240 [2021-11-09 09:20:01,998 INFO L226 Difference]: Without dead ends: 39766 [2021-11-09 09:20:02,011 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2021-11-09 09:20:02,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39766 states. [2021-11-09 09:20:04,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39766 to 13926. [2021-11-09 09:20:04,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13926 states, 13919 states have (on average 1.391335584452906) internal successors, (19366), 13925 states have internal predecessors, (19366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:20:04,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13926 states to 13926 states and 19366 transitions. [2021-11-09 09:20:04,609 INFO L78 Accepts]: Start accepts. Automaton has 13926 states and 19366 transitions. Word has length 69 [2021-11-09 09:20:04,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:20:04,610 INFO L470 AbstractCegarLoop]: Abstraction has 13926 states and 19366 transitions. [2021-11-09 09:20:04,610 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) [2021-11-09 09:20:04,610 INFO L276 IsEmpty]: Start isEmpty. Operand 13926 states and 19366 transitions. [2021-11-09 09:20:04,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-09 09:20:04,616 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:20:04,617 INFO L513 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] [2021-11-09 09:20:04,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-09 09:20:04,617 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)] === [2021-11-09 09:20:04,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:20:04,617 INFO L85 PathProgramCache]: Analyzing trace with hash -688548458, now seen corresponding path program 1 times [2021-11-09 09:20:04,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:20:04,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70478025] [2021-11-09 09:20:04,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:20:04,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:20:04,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:04,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:20:04,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:20:04,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70478025] [2021-11-09 09:20:04,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70478025] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:20:04,960 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:20:04,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-09 09:20:04,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512957986] [2021-11-09 09:20:04,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-09 09:20:04,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:20:04,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-09 09:20:04,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-09 09:20:04,962 INFO L87 Difference]: Start difference. First operand 13926 states and 19366 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) [2021-11-09 09:20:18,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:20:18,731 INFO L93 Difference]: Finished difference Result 77467 states and 110526 transitions. [2021-11-09 09:20:18,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-09 09:20:18,731 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 [2021-11-09 09:20:18,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:20:18,842 INFO L225 Difference]: With dead ends: 77467 [2021-11-09 09:20:18,842 INFO L226 Difference]: Without dead ends: 66996 [2021-11-09 09:20:18,861 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2021-11-09 09:20:18,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66996 states. [2021-11-09 09:20:21,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66996 to 13906. [2021-11-09 09:20:21,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13906 states, 13900 states have (on average 1.3905755395683452) internal successors, (19329), 13905 states have internal predecessors, (19329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:20:21,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13906 states to 13906 states and 19329 transitions. [2021-11-09 09:20:21,806 INFO L78 Accepts]: Start accepts. Automaton has 13906 states and 19329 transitions. Word has length 70 [2021-11-09 09:20:21,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:20:21,806 INFO L470 AbstractCegarLoop]: Abstraction has 13906 states and 19329 transitions. [2021-11-09 09:20:21,806 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) [2021-11-09 09:20:21,806 INFO L276 IsEmpty]: Start isEmpty. Operand 13906 states and 19329 transitions. [2021-11-09 09:20:21,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-09 09:20:21,812 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:20:21,812 INFO L513 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] [2021-11-09 09:20:21,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-09 09:20:21,812 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)] === [2021-11-09 09:20:21,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:20:21,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1142484158, now seen corresponding path program 1 times [2021-11-09 09:20:21,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:20:21,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474781231] [2021-11-09 09:20:21,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:20:21,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:20:21,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:22,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:20:22,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:20:22,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474781231] [2021-11-09 09:20:22,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474781231] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:20:22,126 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:20:22,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-09 09:20:22,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780233542] [2021-11-09 09:20:22,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 09:20:22,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:20:22,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 09:20:22,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-09 09:20:22,128 INFO L87 Difference]: Start difference. First operand 13906 states and 19329 transitions. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 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)