./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b6c5108-6121-4142-86f7-d48b157fd6aa/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b6c5108-6121-4142-86f7-d48b157fd6aa/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b6c5108-6121-4142-86f7-d48b157fd6aa/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b6c5108-6121-4142-86f7-d48b157fd6aa/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b6c5108-6121-4142-86f7-d48b157fd6aa/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b6c5108-6121-4142-86f7-d48b157fd6aa/bin/uautomizer-wIGwrQj20G --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 3fb71e8e4e407700549b8952f3afdeeffa0973a11e08bb7f18bca04e4b75e49d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:27:59,602 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:27:59,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:27:59,644 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:27:59,645 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:27:59,646 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:27:59,649 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:27:59,652 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:27:59,655 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:27:59,657 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:27:59,658 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:27:59,660 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:27:59,661 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:27:59,663 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:27:59,665 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:27:59,667 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:27:59,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:27:59,671 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:27:59,674 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:27:59,677 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:27:59,680 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:27:59,682 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:27:59,684 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:27:59,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:27:59,690 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:27:59,691 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:27:59,692 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:27:59,693 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:27:59,694 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:27:59,696 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:27:59,697 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:27:59,698 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:27:59,699 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:27:59,700 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:27:59,702 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:27:59,703 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:27:59,704 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:27:59,704 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:27:59,705 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:27:59,706 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:27:59,707 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:27:59,709 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b6c5108-6121-4142-86f7-d48b157fd6aa/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 12:27:59,770 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:27:59,772 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:27:59,773 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:27:59,774 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:27:59,784 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:27:59,784 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:27:59,785 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:27:59,785 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:27:59,786 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 12:27:59,786 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 12:27:59,787 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 12:27:59,788 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:27:59,788 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 12:27:59,788 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:27:59,789 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 12:27:59,789 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 12:27:59,789 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 12:27:59,790 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:27:59,790 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 12:27:59,790 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:27:59,791 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:27:59,791 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:27:59,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:27:59,792 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:27:59,792 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:27:59,792 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 12:27:59,793 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 12:27:59,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 12:27:59,793 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 12:27:59,795 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 12:27:59,796 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 12:27:59,796 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:27:59,797 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_6b6c5108-6121-4142-86f7-d48b157fd6aa/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b6c5108-6121-4142-86f7-d48b157fd6aa/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3fb71e8e4e407700549b8952f3afdeeffa0973a11e08bb7f18bca04e4b75e49d [2021-11-23 12:28:00,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:28:00,209 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:28:00,213 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:28:00,215 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:28:00,216 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:28:00,218 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b6c5108-6121-4142-86f7-d48b157fd6aa/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2021-11-23 12:28:00,302 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b6c5108-6121-4142-86f7-d48b157fd6aa/bin/uautomizer-wIGwrQj20G/data/fb1d8e138/09a953ffbccb42b9828f6f8ca0e1dcd1/FLAG84aaeeb1b [2021-11-23 12:28:01,081 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:28:01,082 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b6c5108-6121-4142-86f7-d48b157fd6aa/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2021-11-23 12:28:01,098 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b6c5108-6121-4142-86f7-d48b157fd6aa/bin/uautomizer-wIGwrQj20G/data/fb1d8e138/09a953ffbccb42b9828f6f8ca0e1dcd1/FLAG84aaeeb1b [2021-11-23 12:28:01,308 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b6c5108-6121-4142-86f7-d48b157fd6aa/bin/uautomizer-wIGwrQj20G/data/fb1d8e138/09a953ffbccb42b9828f6f8ca0e1dcd1 [2021-11-23 12:28:01,311 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:28:01,315 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:28:01,320 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:28:01,320 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:28:01,324 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:28:01,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:28:01" (1/1) ... [2021-11-23 12:28:01,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@551936f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:28:01, skipping insertion in model container [2021-11-23 12:28:01,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:28:01" (1/1) ... [2021-11-23 12:28:01,338 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:28:01,428 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:28:01,980 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b6c5108-6121-4142-86f7-d48b157fd6aa/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[10378,10391] [2021-11-23 12:28:02,127 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:28:02,148 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 12:28:02,258 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b6c5108-6121-4142-86f7-d48b157fd6aa/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[10378,10391] [2021-11-23 12:28:02,307 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:28:02,331 INFO L208 MainTranslator]: Completed translation [2021-11-23 12:28:02,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:28:02 WrapperNode [2021-11-23 12:28:02,332 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:28:02,333 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 12:28:02,333 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 12:28:02,333 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 12:28:02,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:28:02" (1/1) ... [2021-11-23 12:28:02,363 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:28:02" (1/1) ... [2021-11-23 12:28:02,434 INFO L137 Inliner]: procedures = 27, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 830 [2021-11-23 12:28:02,435 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 12:28:02,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 12:28:02,436 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 12:28:02,436 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 12:28:02,459 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:28:02" (1/1) ... [2021-11-23 12:28:02,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:28:02" (1/1) ... [2021-11-23 12:28:02,466 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:28:02" (1/1) ... [2021-11-23 12:28:02,467 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:28:02" (1/1) ... [2021-11-23 12:28:02,486 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:28:02" (1/1) ... [2021-11-23 12:28:02,497 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:28:02" (1/1) ... [2021-11-23 12:28:02,501 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:28:02" (1/1) ... [2021-11-23 12:28:02,520 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 12:28:02,522 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 12:28:02,522 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 12:28:02,522 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 12:28:02,524 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:28:02" (1/1) ... [2021-11-23 12:28:02,546 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:28:02,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b6c5108-6121-4142-86f7-d48b157fd6aa/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:28:02,574 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b6c5108-6121-4142-86f7-d48b157fd6aa/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 12:28:02,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b6c5108-6121-4142-86f7-d48b157fd6aa/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 12:28:02,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 12:28:02,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 12:28:02,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 12:28:02,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 12:28:02,831 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 12:28:02,834 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 12:28:04,068 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 12:28:04,086 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 12:28:04,086 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 12:28:04,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:28:04 BoogieIcfgContainer [2021-11-23 12:28:04,090 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 12:28:04,093 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 12:28:04,093 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 12:28:04,097 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 12:28:04,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:28:01" (1/3) ... [2021-11-23 12:28:04,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f9d3247 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:28:04, skipping insertion in model container [2021-11-23 12:28:04,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:28:02" (2/3) ... [2021-11-23 12:28:04,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f9d3247 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:28:04, skipping insertion in model container [2021-11-23 12:28:04,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:28:04" (3/3) ... [2021-11-23 12:28:04,102 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2021-11-23 12:28:04,110 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 12:28:04,110 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 12:28:04,184 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 12:28:04,192 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 [2021-11-23 12:28:04,192 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 12:28:04,219 INFO L276 IsEmpty]: Start isEmpty. Operand has 201 states, 199 states have (on average 1.763819095477387) internal successors, (351), 200 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:04,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-23 12:28:04,235 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:28:04,236 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:28:04,237 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:28:04,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:28:04,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1361095482, now seen corresponding path program 1 times [2021-11-23 12:28:04,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:28:04,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126093873] [2021-11-23 12:28:04,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:28:04,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:28:04,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:28:05,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:28:05,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:28:05,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126093873] [2021-11-23 12:28:05,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126093873] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:28:05,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:28:05,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 12:28:05,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359443006] [2021-11-23 12:28:05,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:28:05,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 12:28:05,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:28:05,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 12:28:05,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-23 12:28:05,216 INFO L87 Difference]: Start difference. First operand has 201 states, 199 states have (on average 1.763819095477387) internal successors, (351), 200 states have internal predecessors, (351), 0 states have call successors, (0), 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 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:06,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:28:06,235 INFO L93 Difference]: Finished difference Result 1440 states and 2328 transitions. [2021-11-23 12:28:06,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 12:28:06,238 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2021-11-23 12:28:06,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:28:06,268 INFO L225 Difference]: With dead ends: 1440 [2021-11-23 12:28:06,268 INFO L226 Difference]: Without dead ends: 1332 [2021-11-23 12:28:06,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2021-11-23 12:28:06,279 INFO L933 BasicCegarLoop]: 764 mSDtfsCounter, 2817 mSDsluCounter, 4939 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2817 SdHoareTripleChecker+Valid, 5703 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 12:28:06,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2817 Valid, 5703 Invalid, 420 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 12:28:06,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1332 states. [2021-11-23 12:28:06,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1332 to 303. [2021-11-23 12:28:06,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 302 states have (on average 1.4503311258278146) internal successors, (438), 302 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:06,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 438 transitions. [2021-11-23 12:28:06,397 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 438 transitions. Word has length 107 [2021-11-23 12:28:06,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:28:06,398 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 438 transitions. [2021-11-23 12:28:06,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:06,399 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 438 transitions. [2021-11-23 12:28:06,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-23 12:28:06,404 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:28:06,404 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:28:06,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 12:28:06,405 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:28:06,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:28:06,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1847794712, now seen corresponding path program 1 times [2021-11-23 12:28:06,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:28:06,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86245665] [2021-11-23 12:28:06,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:28:06,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:28:06,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:28:06,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:28:06,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:28:06,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86245665] [2021-11-23 12:28:06,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86245665] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:28:06,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:28:06,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 12:28:06,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515653458] [2021-11-23 12:28:06,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:28:06,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 12:28:06,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:28:06,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 12:28:06,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-23 12:28:06,739 INFO L87 Difference]: Start difference. First operand 303 states and 438 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:07,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:28:07,318 INFO L93 Difference]: Finished difference Result 1559 states and 2435 transitions. [2021-11-23 12:28:07,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 12:28:07,319 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-23 12:28:07,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:28:07,337 INFO L225 Difference]: With dead ends: 1559 [2021-11-23 12:28:07,337 INFO L226 Difference]: Without dead ends: 1399 [2021-11-23 12:28:07,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-11-23 12:28:07,354 INFO L933 BasicCegarLoop]: 733 mSDtfsCounter, 1952 mSDsluCounter, 2094 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1952 SdHoareTripleChecker+Valid, 2827 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:28:07,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1952 Valid, 2827 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:28:07,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1399 states. [2021-11-23 12:28:07,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1399 to 482. [2021-11-23 12:28:07,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 481 states have (on average 1.5051975051975053) internal successors, (724), 481 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:07,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 724 transitions. [2021-11-23 12:28:07,482 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 724 transitions. Word has length 109 [2021-11-23 12:28:07,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:28:07,486 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 724 transitions. [2021-11-23 12:28:07,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:07,487 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 724 transitions. [2021-11-23 12:28:07,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-23 12:28:07,499 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:28:07,500 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:28:07,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 12:28:07,500 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:28:07,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:28:07,501 INFO L85 PathProgramCache]: Analyzing trace with hash 2013134268, now seen corresponding path program 1 times [2021-11-23 12:28:07,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:28:07,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753869310] [2021-11-23 12:28:07,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:28:07,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:28:07,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:28:07,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:28:07,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:28:07,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753869310] [2021-11-23 12:28:07,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753869310] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:28:07,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:28:07,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 12:28:07,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948831124] [2021-11-23 12:28:07,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:28:07,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 12:28:07,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:28:07,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 12:28:07,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-23 12:28:07,793 INFO L87 Difference]: Start difference. First operand 482 states and 724 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:08,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:28:08,411 INFO L93 Difference]: Finished difference Result 1738 states and 2721 transitions. [2021-11-23 12:28:08,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 12:28:08,412 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-23 12:28:08,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:28:08,430 INFO L225 Difference]: With dead ends: 1738 [2021-11-23 12:28:08,430 INFO L226 Difference]: Without dead ends: 1578 [2021-11-23 12:28:08,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-11-23 12:28:08,444 INFO L933 BasicCegarLoop]: 616 mSDtfsCounter, 2232 mSDsluCounter, 1857 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2232 SdHoareTripleChecker+Valid, 2473 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:28:08,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2232 Valid, 2473 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:28:08,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1578 states. [2021-11-23 12:28:08,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1578 to 735. [2021-11-23 12:28:08,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 734 states have (on average 1.5367847411444142) internal successors, (1128), 734 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:08,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 1128 transitions. [2021-11-23 12:28:08,597 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 1128 transitions. Word has length 109 [2021-11-23 12:28:08,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:28:08,599 INFO L470 AbstractCegarLoop]: Abstraction has 735 states and 1128 transitions. [2021-11-23 12:28:08,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:08,599 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 1128 transitions. [2021-11-23 12:28:08,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-23 12:28:08,607 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:28:08,608 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:28:08,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 12:28:08,609 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:28:08,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:28:08,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1500386704, now seen corresponding path program 1 times [2021-11-23 12:28:08,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:28:08,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039809235] [2021-11-23 12:28:08,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:28:08,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:28:08,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:28:08,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:28:08,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:28:08,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039809235] [2021-11-23 12:28:08,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039809235] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:28:08,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:28:08,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 12:28:08,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058551324] [2021-11-23 12:28:08,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:28:08,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 12:28:08,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:28:08,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 12:28:08,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-23 12:28:08,861 INFO L87 Difference]: Start difference. First operand 735 states and 1128 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:09,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:28:09,454 INFO L93 Difference]: Finished difference Result 1907 states and 2991 transitions. [2021-11-23 12:28:09,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 12:28:09,455 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-23 12:28:09,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:28:09,470 INFO L225 Difference]: With dead ends: 1907 [2021-11-23 12:28:09,470 INFO L226 Difference]: Without dead ends: 1747 [2021-11-23 12:28:09,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-11-23 12:28:09,481 INFO L933 BasicCegarLoop]: 498 mSDtfsCounter, 2406 mSDsluCounter, 1822 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2406 SdHoareTripleChecker+Valid, 2320 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:28:09,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2406 Valid, 2320 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:28:09,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1747 states. [2021-11-23 12:28:09,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1747 to 899. [2021-11-23 12:28:09,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 898 states have (on average 1.5478841870824054) internal successors, (1390), 898 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:09,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1390 transitions. [2021-11-23 12:28:09,642 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1390 transitions. Word has length 109 [2021-11-23 12:28:09,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:28:09,642 INFO L470 AbstractCegarLoop]: Abstraction has 899 states and 1390 transitions. [2021-11-23 12:28:09,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:09,643 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1390 transitions. [2021-11-23 12:28:09,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-23 12:28:09,645 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:28:09,645 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:28:09,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 12:28:09,646 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:28:09,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:28:09,648 INFO L85 PathProgramCache]: Analyzing trace with hash -2131359206, now seen corresponding path program 1 times [2021-11-23 12:28:09,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:28:09,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000563222] [2021-11-23 12:28:09,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:28:09,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:28:09,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:28:09,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:28:09,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:28:09,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000563222] [2021-11-23 12:28:09,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000563222] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:28:09,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:28:09,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 12:28:09,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609754312] [2021-11-23 12:28:09,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:28:09,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 12:28:09,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:28:09,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 12:28:09,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-23 12:28:09,895 INFO L87 Difference]: Start difference. First operand 899 states and 1390 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:10,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:28:10,467 INFO L93 Difference]: Finished difference Result 2066 states and 3245 transitions. [2021-11-23 12:28:10,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 12:28:10,468 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-23 12:28:10,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:28:10,483 INFO L225 Difference]: With dead ends: 2066 [2021-11-23 12:28:10,483 INFO L226 Difference]: Without dead ends: 1906 [2021-11-23 12:28:10,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-11-23 12:28:10,486 INFO L933 BasicCegarLoop]: 388 mSDtfsCounter, 2914 mSDsluCounter, 1818 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2914 SdHoareTripleChecker+Valid, 2206 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:28:10,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2914 Valid, 2206 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:28:10,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1906 states. [2021-11-23 12:28:10,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1906 to 1058. [2021-11-23 12:28:10,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1058 states, 1057 states have (on average 1.555345316934721) internal successors, (1644), 1057 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:10,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 1644 transitions. [2021-11-23 12:28:10,686 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 1644 transitions. Word has length 109 [2021-11-23 12:28:10,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:28:10,687 INFO L470 AbstractCegarLoop]: Abstraction has 1058 states and 1644 transitions. [2021-11-23 12:28:10,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:10,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 1644 transitions. [2021-11-23 12:28:10,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-23 12:28:10,690 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:28:10,690 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:28:10,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 12:28:10,691 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:28:10,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:28:10,692 INFO L85 PathProgramCache]: Analyzing trace with hash -983368864, now seen corresponding path program 1 times [2021-11-23 12:28:10,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:28:10,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679578648] [2021-11-23 12:28:10,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:28:10,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:28:10,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:28:10,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:28:10,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:28:10,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679578648] [2021-11-23 12:28:10,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679578648] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:28:10,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:28:10,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:28:10,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181152571] [2021-11-23 12:28:10,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:28:10,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:28:10,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:28:10,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:28:10,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:28:10,770 INFO L87 Difference]: Start difference. First operand 1058 states and 1644 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:11,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:28:11,092 INFO L93 Difference]: Finished difference Result 2729 states and 4305 transitions. [2021-11-23 12:28:11,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:28:11,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-23 12:28:11,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:28:11,108 INFO L225 Difference]: With dead ends: 2729 [2021-11-23 12:28:11,108 INFO L226 Difference]: Without dead ends: 1858 [2021-11-23 12:28:11,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:28:11,112 INFO L933 BasicCegarLoop]: 381 mSDtfsCounter, 115 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:28:11,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 637 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:28:11,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1858 states. [2021-11-23 12:28:11,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1858 to 1834. [2021-11-23 12:28:11,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1834 states, 1833 states have (on average 1.55810147299509) internal successors, (2856), 1833 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:11,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 2856 transitions. [2021-11-23 12:28:11,422 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 2856 transitions. Word has length 109 [2021-11-23 12:28:11,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:28:11,423 INFO L470 AbstractCegarLoop]: Abstraction has 1834 states and 2856 transitions. [2021-11-23 12:28:11,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:11,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 2856 transitions. [2021-11-23 12:28:11,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-23 12:28:11,425 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:28:11,426 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:28:11,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 12:28:11,426 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:28:11,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:28:11,427 INFO L85 PathProgramCache]: Analyzing trace with hash -739291201, now seen corresponding path program 1 times [2021-11-23 12:28:11,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:28:11,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502798145] [2021-11-23 12:28:11,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:28:11,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:28:11,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:28:11,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:28:11,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:28:11,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502798145] [2021-11-23 12:28:11,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502798145] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:28:11,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:28:11,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 12:28:11,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762852338] [2021-11-23 12:28:11,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:28:11,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 12:28:11,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:28:11,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 12:28:11,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-23 12:28:11,825 INFO L87 Difference]: Start difference. First operand 1834 states and 2856 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:12,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:28:12,600 INFO L93 Difference]: Finished difference Result 3483 states and 5462 transitions. [2021-11-23 12:28:12,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 12:28:12,601 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-23 12:28:12,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:28:12,614 INFO L225 Difference]: With dead ends: 3483 [2021-11-23 12:28:12,615 INFO L226 Difference]: Without dead ends: 1836 [2021-11-23 12:28:12,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2021-11-23 12:28:12,623 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 672 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:28:12,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [672 Valid, 1496 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:28:12,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1836 states. [2021-11-23 12:28:12,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1836 to 1834. [2021-11-23 12:28:12,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1834 states, 1833 states have (on average 1.5548281505728314) internal successors, (2850), 1833 states have internal predecessors, (2850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:12,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 2850 transitions. [2021-11-23 12:28:12,929 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 2850 transitions. Word has length 109 [2021-11-23 12:28:12,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:28:12,930 INFO L470 AbstractCegarLoop]: Abstraction has 1834 states and 2850 transitions. [2021-11-23 12:28:12,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:12,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 2850 transitions. [2021-11-23 12:28:12,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-23 12:28:12,933 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:28:12,933 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:28:12,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 12:28:12,934 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:28:12,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:28:12,936 INFO L85 PathProgramCache]: Analyzing trace with hash 307798176, now seen corresponding path program 1 times [2021-11-23 12:28:12,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:28:12,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517248567] [2021-11-23 12:28:12,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:28:12,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:28:12,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:28:13,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:28:13,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:28:13,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517248567] [2021-11-23 12:28:13,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517248567] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:28:13,121 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:28:13,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 12:28:13,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542437846] [2021-11-23 12:28:13,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:28:13,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 12:28:13,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:28:13,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 12:28:13,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-23 12:28:13,124 INFO L87 Difference]: Start difference. First operand 1834 states and 2850 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:13,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:28:13,971 INFO L93 Difference]: Finished difference Result 3987 states and 6244 transitions. [2021-11-23 12:28:13,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 12:28:13,972 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-23 12:28:13,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:28:14,001 INFO L225 Difference]: With dead ends: 3987 [2021-11-23 12:28:14,001 INFO L226 Difference]: Without dead ends: 3686 [2021-11-23 12:28:14,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-11-23 12:28:14,005 INFO L933 BasicCegarLoop]: 490 mSDtfsCounter, 2209 mSDsluCounter, 2010 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2209 SdHoareTripleChecker+Valid, 2500 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:28:14,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2209 Valid, 2500 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:28:14,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3686 states. [2021-11-23 12:28:14,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3686 to 2133. [2021-11-23 12:28:14,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2133 states, 2132 states have (on average 1.5581613508442778) internal successors, (3322), 2132 states have internal predecessors, (3322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:14,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2133 states to 2133 states and 3322 transitions. [2021-11-23 12:28:14,402 INFO L78 Accepts]: Start accepts. Automaton has 2133 states and 3322 transitions. Word has length 109 [2021-11-23 12:28:14,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:28:14,405 INFO L470 AbstractCegarLoop]: Abstraction has 2133 states and 3322 transitions. [2021-11-23 12:28:14,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:14,406 INFO L276 IsEmpty]: Start isEmpty. Operand 2133 states and 3322 transitions. [2021-11-23 12:28:14,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-23 12:28:14,408 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:28:14,408 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:28:14,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 12:28:14,409 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:28:14,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:28:14,412 INFO L85 PathProgramCache]: Analyzing trace with hash -2133931794, now seen corresponding path program 1 times [2021-11-23 12:28:14,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:28:14,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328906650] [2021-11-23 12:28:14,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:28:14,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:28:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:28:14,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:28:14,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:28:14,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328906650] [2021-11-23 12:28:14,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328906650] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:28:14,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:28:14,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 12:28:14,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994909141] [2021-11-23 12:28:14,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:28:14,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 12:28:14,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:28:14,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 12:28:14,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-23 12:28:14,608 INFO L87 Difference]: Start difference. First operand 2133 states and 3322 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:15,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:28:15,557 INFO L93 Difference]: Finished difference Result 4292 states and 6725 transitions. [2021-11-23 12:28:15,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 12:28:15,558 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-23 12:28:15,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:28:15,600 INFO L225 Difference]: With dead ends: 4292 [2021-11-23 12:28:15,601 INFO L226 Difference]: Without dead ends: 3991 [2021-11-23 12:28:15,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-11-23 12:28:15,615 INFO L933 BasicCegarLoop]: 507 mSDtfsCounter, 2157 mSDsluCounter, 2623 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2157 SdHoareTripleChecker+Valid, 3130 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:28:15,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2157 Valid, 3130 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:28:15,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3991 states. [2021-11-23 12:28:16,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3991 to 2443. [2021-11-23 12:28:16,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2443 states, 2442 states have (on average 1.5606060606060606) internal successors, (3811), 2442 states have internal predecessors, (3811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:16,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2443 states to 2443 states and 3811 transitions. [2021-11-23 12:28:16,037 INFO L78 Accepts]: Start accepts. Automaton has 2443 states and 3811 transitions. Word has length 109 [2021-11-23 12:28:16,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:28:16,038 INFO L470 AbstractCegarLoop]: Abstraction has 2443 states and 3811 transitions. [2021-11-23 12:28:16,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:16,038 INFO L276 IsEmpty]: Start isEmpty. Operand 2443 states and 3811 transitions. [2021-11-23 12:28:16,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-23 12:28:16,040 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:28:16,041 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:28:16,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 12:28:16,041 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:28:16,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:28:16,042 INFO L85 PathProgramCache]: Analyzing trace with hash 763996610, now seen corresponding path program 1 times [2021-11-23 12:28:16,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:28:16,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167398282] [2021-11-23 12:28:16,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:28:16,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:28:16,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:28:16,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:28:16,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:28:16,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167398282] [2021-11-23 12:28:16,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167398282] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:28:16,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:28:16,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 12:28:16,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272716029] [2021-11-23 12:28:16,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:28:16,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 12:28:16,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:28:16,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 12:28:16,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-23 12:28:16,242 INFO L87 Difference]: Start difference. First operand 2443 states and 3811 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:17,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:28:17,352 INFO L93 Difference]: Finished difference Result 4607 states and 7222 transitions. [2021-11-23 12:28:17,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 12:28:17,353 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-23 12:28:17,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:28:17,388 INFO L225 Difference]: With dead ends: 4607 [2021-11-23 12:28:17,388 INFO L226 Difference]: Without dead ends: 4306 [2021-11-23 12:28:17,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-11-23 12:28:17,392 INFO L933 BasicCegarLoop]: 422 mSDtfsCounter, 2330 mSDsluCounter, 2869 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2330 SdHoareTripleChecker+Valid, 3291 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:28:17,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2330 Valid, 3291 Invalid, 290 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 12:28:17,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4306 states. [2021-11-23 12:28:17,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4306 to 2763. [2021-11-23 12:28:17,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2763 states, 2762 states have (on average 1.562635771180304) internal successors, (4316), 2762 states have internal predecessors, (4316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:17,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 4316 transitions. [2021-11-23 12:28:17,868 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 4316 transitions. Word has length 109 [2021-11-23 12:28:17,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:28:17,869 INFO L470 AbstractCegarLoop]: Abstraction has 2763 states and 4316 transitions. [2021-11-23 12:28:17,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:17,870 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 4316 transitions. [2021-11-23 12:28:17,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-23 12:28:17,872 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:28:17,872 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:28:17,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 12:28:17,873 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:28:17,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:28:17,874 INFO L85 PathProgramCache]: Analyzing trace with hash -186015446, now seen corresponding path program 1 times [2021-11-23 12:28:17,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:28:17,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495600343] [2021-11-23 12:28:17,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:28:17,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:28:17,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:28:17,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:28:17,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:28:17,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495600343] [2021-11-23 12:28:17,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495600343] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:28:17,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:28:17,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:28:17,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128131840] [2021-11-23 12:28:17,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:28:17,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:28:17,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:28:17,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:28:17,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:28:17,975 INFO L87 Difference]: Start difference. First operand 2763 states and 4316 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:19,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:28:19,184 INFO L93 Difference]: Finished difference Result 8111 states and 12741 transitions. [2021-11-23 12:28:19,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:28:19,185 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2021-11-23 12:28:19,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:28:19,218 INFO L225 Difference]: With dead ends: 8111 [2021-11-23 12:28:19,218 INFO L226 Difference]: Without dead ends: 5404 [2021-11-23 12:28:19,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:28:19,225 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 1073 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:28:19,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1073 Valid, 239 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 12:28:19,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5404 states. [2021-11-23 12:28:20,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5404 to 5402. [2021-11-23 12:28:20,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5402 states, 5401 states have (on average 1.563784484354749) internal successors, (8446), 5401 states have internal predecessors, (8446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:20,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5402 states to 5402 states and 8446 transitions. [2021-11-23 12:28:20,161 INFO L78 Accepts]: Start accepts. Automaton has 5402 states and 8446 transitions. Word has length 110 [2021-11-23 12:28:20,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:28:20,162 INFO L470 AbstractCegarLoop]: Abstraction has 5402 states and 8446 transitions. [2021-11-23 12:28:20,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:20,163 INFO L276 IsEmpty]: Start isEmpty. Operand 5402 states and 8446 transitions. [2021-11-23 12:28:20,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-23 12:28:20,166 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:28:20,166 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:28:20,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 12:28:20,167 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:28:20,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:28:20,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1618909482, now seen corresponding path program 1 times [2021-11-23 12:28:20,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:28:20,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336042940] [2021-11-23 12:28:20,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:28:20,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:28:20,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:28:20,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:28:20,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:28:20,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336042940] [2021-11-23 12:28:20,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336042940] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:28:20,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:28:20,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:28:20,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801992332] [2021-11-23 12:28:20,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:28:20,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:28:20,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:28:20,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:28:20,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:28:20,293 INFO L87 Difference]: Start difference. First operand 5402 states and 8446 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:21,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:28:21,279 INFO L93 Difference]: Finished difference Result 10732 states and 16816 transitions. [2021-11-23 12:28:21,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:28:21,280 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2021-11-23 12:28:21,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:28:21,292 INFO L225 Difference]: With dead ends: 10732 [2021-11-23 12:28:21,293 INFO L226 Difference]: Without dead ends: 5402 [2021-11-23 12:28:21,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:28:21,304 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 691 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:28:21,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [691 Valid, 182 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:28:21,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5402 states. [2021-11-23 12:28:21,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5402 to 5402. [2021-11-23 12:28:21,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5402 states, 5401 states have (on average 1.551009072394001) internal successors, (8377), 5401 states have internal predecessors, (8377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:21,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5402 states to 5402 states and 8377 transitions. [2021-11-23 12:28:21,984 INFO L78 Accepts]: Start accepts. Automaton has 5402 states and 8377 transitions. Word has length 111 [2021-11-23 12:28:21,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:28:21,985 INFO L470 AbstractCegarLoop]: Abstraction has 5402 states and 8377 transitions. [2021-11-23 12:28:21,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:21,986 INFO L276 IsEmpty]: Start isEmpty. Operand 5402 states and 8377 transitions. [2021-11-23 12:28:21,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-23 12:28:21,988 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:28:21,989 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:28:21,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 12:28:21,989 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:28:21,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:28:21,990 INFO L85 PathProgramCache]: Analyzing trace with hash -716601046, now seen corresponding path program 1 times [2021-11-23 12:28:21,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:28:21,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159330192] [2021-11-23 12:28:21,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:28:21,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:28:22,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:28:22,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:28:22,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:28:22,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159330192] [2021-11-23 12:28:22,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159330192] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:28:22,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:28:22,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:28:22,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619803330] [2021-11-23 12:28:22,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:28:22,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:28:22,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:28:22,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:28:22,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:28:22,088 INFO L87 Difference]: Start difference. First operand 5402 states and 8377 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:22,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:28:22,995 INFO L93 Difference]: Finished difference Result 10724 states and 16669 transitions. [2021-11-23 12:28:22,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:28:22,996 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2021-11-23 12:28:22,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:28:23,009 INFO L225 Difference]: With dead ends: 10724 [2021-11-23 12:28:23,009 INFO L226 Difference]: Without dead ends: 5402 [2021-11-23 12:28:23,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:28:23,020 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 665 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:28:23,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [665 Valid, 202 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:28:23,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5402 states. [2021-11-23 12:28:23,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5402 to 5402. [2021-11-23 12:28:23,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5402 states, 5401 states have (on average 1.5382336604332532) internal successors, (8308), 5401 states have internal predecessors, (8308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:23,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5402 states to 5402 states and 8308 transitions. [2021-11-23 12:28:23,939 INFO L78 Accepts]: Start accepts. Automaton has 5402 states and 8308 transitions. Word has length 112 [2021-11-23 12:28:23,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:28:23,940 INFO L470 AbstractCegarLoop]: Abstraction has 5402 states and 8308 transitions. [2021-11-23 12:28:23,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:23,941 INFO L276 IsEmpty]: Start isEmpty. Operand 5402 states and 8308 transitions. [2021-11-23 12:28:23,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-23 12:28:23,945 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:28:23,945 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:28:23,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 12:28:23,946 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:28:23,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:28:23,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1447492906, now seen corresponding path program 1 times [2021-11-23 12:28:23,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:28:23,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729086042] [2021-11-23 12:28:23,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:28:23,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:28:23,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:28:24,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:28:24,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:28:24,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729086042] [2021-11-23 12:28:24,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729086042] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:28:24,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:28:24,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:28:24,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385825119] [2021-11-23 12:28:24,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:28:24,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:28:24,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:28:24,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:28:24,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:28:24,059 INFO L87 Difference]: Start difference. First operand 5402 states and 8308 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:25,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:28:25,023 INFO L93 Difference]: Finished difference Result 10736 states and 16545 transitions. [2021-11-23 12:28:25,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:28:25,024 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-23 12:28:25,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:28:25,039 INFO L225 Difference]: With dead ends: 10736 [2021-11-23 12:28:25,039 INFO L226 Difference]: Without dead ends: 5402 [2021-11-23 12:28:25,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:28:25,051 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 690 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:28:25,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [690 Valid, 174 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:28:25,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5402 states. [2021-11-23 12:28:25,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5402 to 5402. [2021-11-23 12:28:25,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5402 states, 5401 states have (on average 1.525458248472505) internal successors, (8239), 5401 states have internal predecessors, (8239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:25,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5402 states to 5402 states and 8239 transitions. [2021-11-23 12:28:25,869 INFO L78 Accepts]: Start accepts. Automaton has 5402 states and 8239 transitions. Word has length 113 [2021-11-23 12:28:25,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:28:25,869 INFO L470 AbstractCegarLoop]: Abstraction has 5402 states and 8239 transitions. [2021-11-23 12:28:25,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:25,870 INFO L276 IsEmpty]: Start isEmpty. Operand 5402 states and 8239 transitions. [2021-11-23 12:28:25,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-23 12:28:25,873 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:28:25,873 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:28:25,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 12:28:25,874 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:28:25,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:28:25,874 INFO L85 PathProgramCache]: Analyzing trace with hash 912210718, now seen corresponding path program 1 times [2021-11-23 12:28:25,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:28:25,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553210119] [2021-11-23 12:28:25,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:28:25,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:28:25,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:28:25,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:28:25,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:28:25,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553210119] [2021-11-23 12:28:25,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553210119] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:28:25,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:28:25,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:28:25,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19561809] [2021-11-23 12:28:25,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:28:25,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:28:25,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:28:25,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:28:25,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:28:25,968 INFO L87 Difference]: Start difference. First operand 5402 states and 8239 transitions. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:27,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:28:27,113 INFO L93 Difference]: Finished difference Result 10744 states and 16417 transitions. [2021-11-23 12:28:27,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:28:27,114 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2021-11-23 12:28:27,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:28:27,128 INFO L225 Difference]: With dead ends: 10744 [2021-11-23 12:28:27,128 INFO L226 Difference]: Without dead ends: 5402 [2021-11-23 12:28:27,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:28:27,137 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 706 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:28:27,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [706 Valid, 158 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:28:27,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5402 states. [2021-11-23 12:28:27,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5402 to 5402. [2021-11-23 12:28:27,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5402 states, 5401 states have (on average 1.512682836511757) internal successors, (8170), 5401 states have internal predecessors, (8170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:27,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5402 states to 5402 states and 8170 transitions. [2021-11-23 12:28:27,948 INFO L78 Accepts]: Start accepts. Automaton has 5402 states and 8170 transitions. Word has length 114 [2021-11-23 12:28:28,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:28:28,021 INFO L470 AbstractCegarLoop]: Abstraction has 5402 states and 8170 transitions. [2021-11-23 12:28:28,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:28,022 INFO L276 IsEmpty]: Start isEmpty. Operand 5402 states and 8170 transitions. [2021-11-23 12:28:28,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 12:28:28,025 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:28:28,026 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:28:28,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-23 12:28:28,026 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:28:28,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:28:28,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1260402774, now seen corresponding path program 1 times [2021-11-23 12:28:28,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:28:28,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278466819] [2021-11-23 12:28:28,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:28:28,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:28:28,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:28:28,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:28:28,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:28:28,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278466819] [2021-11-23 12:28:28,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278466819] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:28:28,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:28:28,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:28:28,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700055180] [2021-11-23 12:28:28,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:28:28,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:28:28,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:28:28,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:28:28,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:28:28,168 INFO L87 Difference]: Start difference. First operand 5402 states and 8170 transitions. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:29,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:28:29,330 INFO L93 Difference]: Finished difference Result 10740 states and 16275 transitions. [2021-11-23 12:28:29,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:28:29,331 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2021-11-23 12:28:29,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:28:29,341 INFO L225 Difference]: With dead ends: 10740 [2021-11-23 12:28:29,341 INFO L226 Difference]: Without dead ends: 5402 [2021-11-23 12:28:29,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:28:29,353 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 688 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:28:29,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [688 Valid, 166 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:28:29,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5402 states. [2021-11-23 12:28:30,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5402 to 5402. [2021-11-23 12:28:30,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5402 states, 5401 states have (on average 1.4999074245510091) internal successors, (8101), 5401 states have internal predecessors, (8101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:30,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5402 states to 5402 states and 8101 transitions. [2021-11-23 12:28:30,266 INFO L78 Accepts]: Start accepts. Automaton has 5402 states and 8101 transitions. Word has length 115 [2021-11-23 12:28:30,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:28:30,267 INFO L470 AbstractCegarLoop]: Abstraction has 5402 states and 8101 transitions. [2021-11-23 12:28:30,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:30,267 INFO L276 IsEmpty]: Start isEmpty. Operand 5402 states and 8101 transitions. [2021-11-23 12:28:30,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-23 12:28:30,271 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:28:30,271 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:28:30,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-23 12:28:30,272 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:28:30,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:28:30,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1805227026, now seen corresponding path program 1 times [2021-11-23 12:28:30,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:28:30,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338966744] [2021-11-23 12:28:30,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:28:30,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:28:30,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:28:30,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:28:30,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:28:30,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338966744] [2021-11-23 12:28:30,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338966744] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:28:30,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:28:30,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:28:30,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240441267] [2021-11-23 12:28:30,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:28:30,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:28:30,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:28:30,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:28:30,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:28:30,367 INFO L87 Difference]: Start difference. First operand 5402 states and 8101 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:31,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:28:31,429 INFO L93 Difference]: Finished difference Result 10728 states and 16125 transitions. [2021-11-23 12:28:31,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:28:31,430 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2021-11-23 12:28:31,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:28:31,437 INFO L225 Difference]: With dead ends: 10728 [2021-11-23 12:28:31,437 INFO L226 Difference]: Without dead ends: 5402 [2021-11-23 12:28:31,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:28:31,445 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 646 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:28:31,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [646 Valid, 190 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:28:31,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5402 states. [2021-11-23 12:28:32,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5402 to 5402. [2021-11-23 12:28:32,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5402 states, 5401 states have (on average 1.487132012590261) internal successors, (8032), 5401 states have internal predecessors, (8032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:32,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5402 states to 5402 states and 8032 transitions. [2021-11-23 12:28:32,490 INFO L78 Accepts]: Start accepts. Automaton has 5402 states and 8032 transitions. Word has length 116 [2021-11-23 12:28:32,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:28:32,490 INFO L470 AbstractCegarLoop]: Abstraction has 5402 states and 8032 transitions. [2021-11-23 12:28:32,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:32,490 INFO L276 IsEmpty]: Start isEmpty. Operand 5402 states and 8032 transitions. [2021-11-23 12:28:32,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-23 12:28:32,493 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:28:32,494 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:28:32,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-23 12:28:32,494 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:28:32,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:28:32,495 INFO L85 PathProgramCache]: Analyzing trace with hash 695724750, now seen corresponding path program 1 times [2021-11-23 12:28:32,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:28:32,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064524508] [2021-11-23 12:28:32,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:28:32,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:28:32,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:28:32,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:28:32,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:28:32,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064524508] [2021-11-23 12:28:32,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064524508] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:28:32,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:28:32,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-23 12:28:32,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264357944] [2021-11-23 12:28:32,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:28:32,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 12:28:32,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:28:32,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 12:28:32,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-23 12:28:32,885 INFO L87 Difference]: Start difference. First operand 5402 states and 8032 transitions. Second operand has 13 states, 13 states have (on average 9.0) internal successors, (117), 12 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:36,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:28:36,323 INFO L93 Difference]: Finished difference Result 15791 states and 23456 transitions. [2021-11-23 12:28:36,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 12:28:36,323 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.0) internal successors, (117), 12 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2021-11-23 12:28:36,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:28:36,337 INFO L225 Difference]: With dead ends: 15791 [2021-11-23 12:28:36,337 INFO L226 Difference]: Without dead ends: 10692 [2021-11-23 12:28:36,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2021-11-23 12:28:36,345 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 1716 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1716 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 12:28:36,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1716 Valid, 682 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-23 12:28:36,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10692 states. [2021-11-23 12:28:37,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10692 to 5402. [2021-11-23 12:28:37,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5402 states, 5401 states have (on average 1.4847250509164969) internal successors, (8019), 5401 states have internal predecessors, (8019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:37,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5402 states to 5402 states and 8019 transitions. [2021-11-23 12:28:37,594 INFO L78 Accepts]: Start accepts. Automaton has 5402 states and 8019 transitions. Word has length 117 [2021-11-23 12:28:37,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:28:37,594 INFO L470 AbstractCegarLoop]: Abstraction has 5402 states and 8019 transitions. [2021-11-23 12:28:37,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.0) internal successors, (117), 12 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:37,595 INFO L276 IsEmpty]: Start isEmpty. Operand 5402 states and 8019 transitions. [2021-11-23 12:28:37,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-23 12:28:37,598 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:28:37,598 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:28:37,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-23 12:28:37,599 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:28:37,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:28:37,599 INFO L85 PathProgramCache]: Analyzing trace with hash -524174812, now seen corresponding path program 1 times [2021-11-23 12:28:37,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:28:37,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795064923] [2021-11-23 12:28:37,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:28:37,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:28:37,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:28:38,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:28:38,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:28:38,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795064923] [2021-11-23 12:28:38,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795064923] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:28:38,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:28:38,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-23 12:28:38,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332014015] [2021-11-23 12:28:38,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:28:38,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 12:28:38,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:28:38,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 12:28:38,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-11-23 12:28:38,029 INFO L87 Difference]: Start difference. First operand 5402 states and 8019 transitions. Second operand has 14 states, 14 states have (on average 8.428571428571429) internal successors, (118), 13 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:44,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:28:44,070 INFO L93 Difference]: Finished difference Result 25908 states and 38053 transitions. [2021-11-23 12:28:44,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-23 12:28:44,070 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.428571428571429) internal successors, (118), 13 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-11-23 12:28:44,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:28:44,099 INFO L225 Difference]: With dead ends: 25908 [2021-11-23 12:28:44,099 INFO L226 Difference]: Without dead ends: 20822 [2021-11-23 12:28:44,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=230, Invalid=700, Unknown=0, NotChecked=0, Total=930 [2021-11-23 12:28:44,108 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 1996 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1996 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 12:28:44,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1996 Valid, 1012 Invalid, 1018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-23 12:28:44,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20822 states. [2021-11-23 12:28:45,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20822 to 5599. [2021-11-23 12:28:45,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5599 states, 5598 states have (on average 1.4835655591282602) internal successors, (8305), 5598 states have internal predecessors, (8305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:45,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5599 states to 5599 states and 8305 transitions. [2021-11-23 12:28:45,266 INFO L78 Accepts]: Start accepts. Automaton has 5599 states and 8305 transitions. Word has length 118 [2021-11-23 12:28:45,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:28:45,267 INFO L470 AbstractCegarLoop]: Abstraction has 5599 states and 8305 transitions. [2021-11-23 12:28:45,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.428571428571429) internal successors, (118), 13 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:45,267 INFO L276 IsEmpty]: Start isEmpty. Operand 5599 states and 8305 transitions. [2021-11-23 12:28:45,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-23 12:28:45,269 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:28:45,270 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:28:45,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-23 12:28:45,270 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:28:45,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:28:45,270 INFO L85 PathProgramCache]: Analyzing trace with hash -7556516, now seen corresponding path program 1 times [2021-11-23 12:28:45,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:28:45,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244646573] [2021-11-23 12:28:45,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:28:45,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:28:45,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:28:45,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:28:45,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:28:45,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244646573] [2021-11-23 12:28:45,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244646573] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:28:45,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:28:45,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-23 12:28:45,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211985900] [2021-11-23 12:28:45,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:28:45,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 12:28:45,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:28:45,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 12:28:45,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-23 12:28:45,615 INFO L87 Difference]: Start difference. First operand 5599 states and 8305 transitions. Second operand has 13 states, 13 states have (on average 9.076923076923077) internal successors, (118), 12 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:48,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:28:48,822 INFO L93 Difference]: Finished difference Result 16296 states and 24151 transitions. [2021-11-23 12:28:48,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 12:28:48,822 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.076923076923077) internal successors, (118), 12 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-11-23 12:28:48,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:28:48,838 INFO L225 Difference]: With dead ends: 16296 [2021-11-23 12:28:48,838 INFO L226 Difference]: Without dead ends: 11053 [2021-11-23 12:28:48,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2021-11-23 12:28:48,848 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 1825 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1825 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 12:28:48,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1825 Valid, 604 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 12:28:48,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11053 states. [2021-11-23 12:28:50,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11053 to 5599. [2021-11-23 12:28:50,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5599 states, 5598 states have (on average 1.4799928545909253) internal successors, (8285), 5598 states have internal predecessors, (8285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:50,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5599 states to 5599 states and 8285 transitions. [2021-11-23 12:28:50,436 INFO L78 Accepts]: Start accepts. Automaton has 5599 states and 8285 transitions. Word has length 118 [2021-11-23 12:28:50,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:28:50,437 INFO L470 AbstractCegarLoop]: Abstraction has 5599 states and 8285 transitions. [2021-11-23 12:28:50,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.076923076923077) internal successors, (118), 12 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:28:50,437 INFO L276 IsEmpty]: Start isEmpty. Operand 5599 states and 8285 transitions. [2021-11-23 12:28:50,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-23 12:28:50,441 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:28:50,441 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:28:50,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-23 12:28:50,442 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:28:50,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:28:50,442 INFO L85 PathProgramCache]: Analyzing trace with hash -275246448, now seen corresponding path program 1 times [2021-11-23 12:28:50,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:28:50,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549760495] [2021-11-23 12:28:50,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:28:50,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:28:50,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:28:50,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:28:50,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:28:50,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549760495] [2021-11-23 12:28:50,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549760495] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:28:50,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:28:50,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-23 12:28:50,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029206751] [2021-11-23 12:28:50,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:28:50,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 12:28:50,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:28:50,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 12:28:50,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-23 12:28:50,847 INFO L87 Difference]: Start difference. First operand 5599 states and 8285 transitions. Second operand has 12 states, 12 states have (on average 9.916666666666666) internal successors, (119), 11 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:29:02,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:29:02,125 INFO L93 Difference]: Finished difference Result 44732 states and 66207 transitions. [2021-11-23 12:29:02,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-23 12:29:02,125 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.916666666666666) internal successors, (119), 11 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2021-11-23 12:29:02,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:29:02,191 INFO L225 Difference]: With dead ends: 44732 [2021-11-23 12:29:02,191 INFO L226 Difference]: Without dead ends: 39646 [2021-11-23 12:29:02,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=309, Invalid=747, Unknown=0, NotChecked=0, Total=1056 [2021-11-23 12:29:02,205 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 3743 mSDsluCounter, 917 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3743 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 12:29:02,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3743 Valid, 1061 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-23 12:29:02,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39646 states. [2021-11-23 12:29:04,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39646 to 5815. [2021-11-23 12:29:04,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5815 states, 5814 states have (on average 1.477640178878569) internal successors, (8591), 5814 states have internal predecessors, (8591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:29:04,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5815 states to 5815 states and 8591 transitions. [2021-11-23 12:29:04,089 INFO L78 Accepts]: Start accepts. Automaton has 5815 states and 8591 transitions. Word has length 119 [2021-11-23 12:29:04,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:29:04,090 INFO L470 AbstractCegarLoop]: Abstraction has 5815 states and 8591 transitions. [2021-11-23 12:29:04,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.916666666666666) internal successors, (119), 11 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:29:04,091 INFO L276 IsEmpty]: Start isEmpty. Operand 5815 states and 8591 transitions. [2021-11-23 12:29:04,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-23 12:29:04,095 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:29:04,095 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:29:04,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-23 12:29:04,096 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:29:04,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:29:04,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1843341840, now seen corresponding path program 1 times [2021-11-23 12:29:04,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:29:04,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908296829] [2021-11-23 12:29:04,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:29:04,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:29:04,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:29:04,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:29:04,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:29:04,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908296829] [2021-11-23 12:29:04,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908296829] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:29:04,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:29:04,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:29:04,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143846044] [2021-11-23 12:29:04,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:29:04,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:29:04,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:29:04,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:29:04,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:29:04,174 INFO L87 Difference]: Start difference. First operand 5815 states and 8591 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:29:07,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:29:07,157 INFO L93 Difference]: Finished difference Result 15715 states and 23425 transitions. [2021-11-23 12:29:07,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:29:07,160 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2021-11-23 12:29:07,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:29:07,174 INFO L225 Difference]: With dead ends: 15715 [2021-11-23 12:29:07,174 INFO L226 Difference]: Without dead ends: 10629 [2021-11-23 12:29:07,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:29:07,184 INFO L933 BasicCegarLoop]: 363 mSDtfsCounter, 139 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:29:07,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 558 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:29:07,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10629 states. [2021-11-23 12:29:09,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10629 to 10355. [2021-11-23 12:29:09,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10355 states, 10354 states have (on average 1.47450260768785) internal successors, (15267), 10354 states have internal predecessors, (15267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:29:09,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10355 states to 10355 states and 15267 transitions. [2021-11-23 12:29:09,921 INFO L78 Accepts]: Start accepts. Automaton has 10355 states and 15267 transitions. Word has length 119 [2021-11-23 12:29:09,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:29:09,921 INFO L470 AbstractCegarLoop]: Abstraction has 10355 states and 15267 transitions. [2021-11-23 12:29:09,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:29:09,922 INFO L276 IsEmpty]: Start isEmpty. Operand 10355 states and 15267 transitions. [2021-11-23 12:29:09,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-23 12:29:09,925 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:29:09,925 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:29:09,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-23 12:29:09,926 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:29:09,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:29:09,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1052167385, now seen corresponding path program 1 times [2021-11-23 12:29:09,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:29:09,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101237658] [2021-11-23 12:29:09,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:29:09,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:29:09,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:29:10,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:29:10,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:29:10,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101237658] [2021-11-23 12:29:10,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101237658] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:29:10,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:29:10,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-23 12:29:10,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385379708] [2021-11-23 12:29:10,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:29:10,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 12:29:10,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:29:10,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 12:29:10,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-23 12:29:10,260 INFO L87 Difference]: Start difference. First operand 10355 states and 15267 transitions. Second operand has 13 states, 13 states have (on average 9.153846153846153) internal successors, (119), 12 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:29:19,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:29:19,271 INFO L93 Difference]: Finished difference Result 39296 states and 57890 transitions. [2021-11-23 12:29:19,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 12:29:19,272 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.153846153846153) internal successors, (119), 12 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2021-11-23 12:29:19,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:29:19,322 INFO L225 Difference]: With dead ends: 39296 [2021-11-23 12:29:19,322 INFO L226 Difference]: Without dead ends: 29670 [2021-11-23 12:29:19,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=192, Invalid=564, Unknown=0, NotChecked=0, Total=756 [2021-11-23 12:29:19,334 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 1891 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1891 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 12:29:19,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1891 Valid, 819 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 739 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-23 12:29:19,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29670 states. [2021-11-23 12:29:22,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29670 to 10119. [2021-11-23 12:29:22,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10119 states, 10118 states have (on average 1.4755880608815972) internal successors, (14930), 10118 states have internal predecessors, (14930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:29:22,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10119 states to 10119 states and 14930 transitions. [2021-11-23 12:29:22,265 INFO L78 Accepts]: Start accepts. Automaton has 10119 states and 14930 transitions. Word has length 119 [2021-11-23 12:29:22,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:29:22,265 INFO L470 AbstractCegarLoop]: Abstraction has 10119 states and 14930 transitions. [2021-11-23 12:29:22,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.153846153846153) internal successors, (119), 12 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:29:22,266 INFO L276 IsEmpty]: Start isEmpty. Operand 10119 states and 14930 transitions. [2021-11-23 12:29:22,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-23 12:29:22,268 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:29:22,268 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:29:22,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-23 12:29:22,269 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:29:22,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:29:22,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1118060410, now seen corresponding path program 1 times [2021-11-23 12:29:22,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:29:22,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860215377] [2021-11-23 12:29:22,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:29:22,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:29:22,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:29:22,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:29:22,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:29:22,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860215377] [2021-11-23 12:29:22,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860215377] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:29:22,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:29:22,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-23 12:29:22,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508595346] [2021-11-23 12:29:22,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:29:22,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 12:29:22,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:29:22,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 12:29:22,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-23 12:29:22,669 INFO L87 Difference]: Start difference. First operand 10119 states and 14930 transitions. Second operand has 12 states, 12 states have (on average 10.0) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:29:30,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:29:30,319 INFO L93 Difference]: Finished difference Result 30549 states and 44920 transitions. [2021-11-23 12:29:30,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 12:29:30,320 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.0) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-11-23 12:29:30,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:29:30,349 INFO L225 Difference]: With dead ends: 30549 [2021-11-23 12:29:30,349 INFO L226 Difference]: Without dead ends: 20630 [2021-11-23 12:29:30,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=164, Invalid=486, Unknown=0, NotChecked=0, Total=650 [2021-11-23 12:29:30,360 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 1735 mSDsluCounter, 1103 mSDsCounter, 0 mSdLazyCounter, 1232 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1735 SdHoareTripleChecker+Valid, 1396 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 12:29:30,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1735 Valid, 1396 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1232 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-23 12:29:30,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20630 states. [2021-11-23 12:29:33,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20630 to 10119. [2021-11-23 12:29:33,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10119 states, 10118 states have (on average 1.4751927258351454) internal successors, (14926), 10118 states have internal predecessors, (14926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:29:33,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10119 states to 10119 states and 14926 transitions. [2021-11-23 12:29:33,490 INFO L78 Accepts]: Start accepts. Automaton has 10119 states and 14926 transitions. Word has length 120 [2021-11-23 12:29:33,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:29:33,490 INFO L470 AbstractCegarLoop]: Abstraction has 10119 states and 14926 transitions. [2021-11-23 12:29:33,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.0) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:29:33,490 INFO L276 IsEmpty]: Start isEmpty. Operand 10119 states and 14926 transitions. [2021-11-23 12:29:33,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-23 12:29:33,492 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:29:33,492 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:29:33,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-23 12:29:33,493 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:29:33,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:29:33,493 INFO L85 PathProgramCache]: Analyzing trace with hash -2057488007, now seen corresponding path program 1 times [2021-11-23 12:29:33,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:29:33,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826812334] [2021-11-23 12:29:33,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:29:33,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:29:33,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:29:33,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:29:33,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:29:33,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826812334] [2021-11-23 12:29:33,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826812334] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:29:33,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:29:33,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-23 12:29:33,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755596538] [2021-11-23 12:29:33,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:29:33,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 12:29:33,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:29:33,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 12:29:33,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-11-23 12:29:33,878 INFO L87 Difference]: Start difference. First operand 10119 states and 14926 transitions. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 12 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)