./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1935a20f-6376-4d52-90bf-ef49a1c2771e/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1935a20f-6376-4d52-90bf-ef49a1c2771e/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1935a20f-6376-4d52-90bf-ef49a1c2771e/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1935a20f-6376-4d52-90bf-ef49a1c2771e/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1935a20f-6376-4d52-90bf-ef49a1c2771e/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1935a20f-6376-4d52-90bf-ef49a1c2771e/bin/uautomizer-DrprNOufMa --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 60893087aa786664ad64540c06a3cfd94f74ea911d6a1d2cfa0eca217367fc44 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 20:56:44,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 20:56:44,524 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 20:56:44,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 20:56:44,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 20:56:44,556 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 20:56:44,558 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 20:56:44,560 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 20:56:44,562 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 20:56:44,563 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 20:56:44,564 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 20:56:44,565 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 20:56:44,566 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 20:56:44,567 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 20:56:44,568 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 20:56:44,570 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 20:56:44,571 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 20:56:44,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 20:56:44,573 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 20:56:44,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 20:56:44,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 20:56:44,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 20:56:44,580 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 20:56:44,581 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 20:56:44,585 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 20:56:44,585 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 20:56:44,585 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 20:56:44,586 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 20:56:44,587 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 20:56:44,587 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 20:56:44,588 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 20:56:44,588 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 20:56:44,589 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 20:56:44,590 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 20:56:44,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 20:56:44,591 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 20:56:44,591 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 20:56:44,591 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 20:56:44,592 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 20:56:44,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 20:56:44,593 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 20:56:44,594 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1935a20f-6376-4d52-90bf-ef49a1c2771e/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 20:56:44,610 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 20:56:44,611 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 20:56:44,617 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 20:56:44,617 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 20:56:44,617 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 20:56:44,618 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 20:56:44,618 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 20:56:44,618 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 20:56:44,618 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 20:56:44,618 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 20:56:44,619 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 20:56:44,619 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 20:56:44,619 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 20:56:44,619 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 20:56:44,619 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 20:56:44,619 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 20:56:44,619 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 20:56:44,620 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 20:56:44,620 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 20:56:44,620 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 20:56:44,620 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 20:56:44,620 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 20:56:44,620 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 20:56:44,620 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 20:56:44,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:56:44,621 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 20:56:44,621 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 20:56:44,621 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 20:56:44,621 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 20:56:44,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 20:56:44,621 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 20:56:44,621 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 20:56:44,622 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 20:56:44,622 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 20:56:44,622 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_1935a20f-6376-4d52-90bf-ef49a1c2771e/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1935a20f-6376-4d52-90bf-ef49a1c2771e/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 60893087aa786664ad64540c06a3cfd94f74ea911d6a1d2cfa0eca217367fc44 [2021-12-06 20:56:44,786 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 20:56:44,801 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 20:56:44,803 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 20:56:44,804 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 20:56:44,804 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 20:56:44,805 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1935a20f-6376-4d52-90bf-ef49a1c2771e/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label01.c [2021-12-06 20:56:44,850 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1935a20f-6376-4d52-90bf-ef49a1c2771e/bin/uautomizer-DrprNOufMa/data/4af81c8e4/955ffec3497741eca4d33f5b9c912bdc/FLAGe6adb7a5c [2021-12-06 20:56:45,434 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 20:56:45,434 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1935a20f-6376-4d52-90bf-ef49a1c2771e/sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label01.c [2021-12-06 20:56:45,454 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1935a20f-6376-4d52-90bf-ef49a1c2771e/bin/uautomizer-DrprNOufMa/data/4af81c8e4/955ffec3497741eca4d33f5b9c912bdc/FLAGe6adb7a5c [2021-12-06 20:56:45,879 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1935a20f-6376-4d52-90bf-ef49a1c2771e/bin/uautomizer-DrprNOufMa/data/4af81c8e4/955ffec3497741eca4d33f5b9c912bdc [2021-12-06 20:56:45,881 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 20:56:45,882 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 20:56:45,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 20:56:45,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 20:56:45,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 20:56:45,886 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:56:45" (1/1) ... [2021-12-06 20:56:45,887 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16a61cde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:56:45, skipping insertion in model container [2021-12-06 20:56:45,887 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:56:45" (1/1) ... [2021-12-06 20:56:45,892 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 20:56:45,966 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 20:56:46,237 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_1935a20f-6376-4d52-90bf-ef49a1c2771e/sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label01.c[20463,20476] [2021-12-06 20:56:46,270 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_1935a20f-6376-4d52-90bf-ef49a1c2771e/sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label01.c[26018,26031] [2021-12-06 20:56:46,824 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:56:46,831 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 20:56:46,861 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_1935a20f-6376-4d52-90bf-ef49a1c2771e/sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label01.c[20463,20476] [2021-12-06 20:56:46,870 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_1935a20f-6376-4d52-90bf-ef49a1c2771e/sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label01.c[26018,26031] [2021-12-06 20:56:47,234 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:56:47,255 INFO L208 MainTranslator]: Completed translation [2021-12-06 20:56:47,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:56:47 WrapperNode [2021-12-06 20:56:47,255 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 20:56:47,256 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 20:56:47,256 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 20:56:47,256 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 20:56:47,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:56:47" (1/1) ... [2021-12-06 20:56:47,305 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:56:47" (1/1) ... [2021-12-06 20:56:47,521 INFO L137 Inliner]: procedures = 38, calls = 24, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5211 [2021-12-06 20:56:47,521 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 20:56:47,522 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 20:56:47,522 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 20:56:47,522 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 20:56:47,530 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:56:47" (1/1) ... [2021-12-06 20:56:47,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:56:47" (1/1) ... [2021-12-06 20:56:47,578 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:56:47" (1/1) ... [2021-12-06 20:56:47,578 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:56:47" (1/1) ... [2021-12-06 20:56:47,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:56:47" (1/1) ... [2021-12-06 20:56:47,731 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:56:47" (1/1) ... [2021-12-06 20:56:47,759 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:56:47" (1/1) ... [2021-12-06 20:56:47,792 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 20:56:47,793 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 20:56:47,793 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 20:56:47,793 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 20:56:47,794 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:56:47" (1/1) ... [2021-12-06 20:56:47,800 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:56:47,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1935a20f-6376-4d52-90bf-ef49a1c2771e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:56:47,818 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1935a20f-6376-4d52-90bf-ef49a1c2771e/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 20:56:47,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1935a20f-6376-4d52-90bf-ef49a1c2771e/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 20:56:47,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 20:56:47,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 20:56:47,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 20:56:47,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 20:56:47,949 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 20:56:47,951 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 20:56:50,692 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 20:56:50,706 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 20:56:50,707 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-06 20:56:50,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:56:50 BoogieIcfgContainer [2021-12-06 20:56:50,710 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 20:56:50,711 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 20:56:50,711 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 20:56:50,713 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 20:56:50,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 08:56:45" (1/3) ... [2021-12-06 20:56:50,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40c2b173 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:56:50, skipping insertion in model container [2021-12-06 20:56:50,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:56:47" (2/3) ... [2021-12-06 20:56:50,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40c2b173 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:56:50, skipping insertion in model container [2021-12-06 20:56:50,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:56:50" (3/3) ... [2021-12-06 20:56:50,715 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label01.c [2021-12-06 20:56:50,719 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 20:56:50,719 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-06 20:56:50,758 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 20:56:50,763 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 [2021-12-06 20:56:50,763 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-06 20:56:50,790 INFO L276 IsEmpty]: Start isEmpty. Operand has 944 states, 941 states have (on average 1.8979808714133901) internal successors, (1786), 943 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:56:50,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-06 20:56:50,797 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:56:50,798 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] [2021-12-06 20:56:50,798 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:56:50,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:56:50,802 INFO L85 PathProgramCache]: Analyzing trace with hash 720070723, now seen corresponding path program 1 times [2021-12-06 20:56:50,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:56:50,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17427430] [2021-12-06 20:56:50,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:56:50,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:56:50,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:56:50,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:56:50,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:56:50,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17427430] [2021-12-06 20:56:50,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17427430] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:56:50,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:56:50,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 20:56:50,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822059034] [2021-12-06 20:56:50,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:56:50,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 20:56:50,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:56:50,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 20:56:50,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 20:56:50,978 INFO L87 Difference]: Start difference. First operand has 944 states, 941 states have (on average 1.8979808714133901) internal successors, (1786), 943 states have internal predecessors, (1786), 0 states have call successors, (0), 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 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:56:51,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:56:51,042 INFO L93 Difference]: Finished difference Result 1832 states and 3464 transitions. [2021-12-06 20:56:51,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 20:56:51,043 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2021-12-06 20:56:51,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:56:51,059 INFO L225 Difference]: With dead ends: 1832 [2021-12-06 20:56:51,060 INFO L226 Difference]: Without dead ends: 878 [2021-12-06 20:56:51,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 20:56:51,067 INFO L933 BasicCegarLoop]: 1720 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1720 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:56:51,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1720 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:56:51,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2021-12-06 20:56:51,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2021-12-06 20:56:51,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 876 states have (on average 1.8869863013698631) internal successors, (1653), 877 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:56:51,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1653 transitions. [2021-12-06 20:56:51,131 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1653 transitions. Word has length 42 [2021-12-06 20:56:51,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:56:51,131 INFO L470 AbstractCegarLoop]: Abstraction has 878 states and 1653 transitions. [2021-12-06 20:56:51,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:56:51,131 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1653 transitions. [2021-12-06 20:56:51,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-06 20:56:51,133 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:56:51,133 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] [2021-12-06 20:56:51,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 20:56:51,134 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:56:51,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:56:51,134 INFO L85 PathProgramCache]: Analyzing trace with hash 325703937, now seen corresponding path program 1 times [2021-12-06 20:56:51,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:56:51,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129514316] [2021-12-06 20:56:51,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:56:51,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:56:51,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:56:51,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:56:51,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:56:51,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129514316] [2021-12-06 20:56:51,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129514316] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:56:51,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:56:51,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 20:56:51,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982169581] [2021-12-06 20:56:51,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:56:51,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 20:56:51,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:56:51,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 20:56:51,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:56:51,275 INFO L87 Difference]: Start difference. First operand 878 states and 1653 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:56:51,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:56:51,399 INFO L93 Difference]: Finished difference Result 950 states and 1765 transitions. [2021-12-06 20:56:51,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:56:51,399 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2021-12-06 20:56:51,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:56:51,405 INFO L225 Difference]: With dead ends: 950 [2021-12-06 20:56:51,406 INFO L226 Difference]: Without dead ends: 878 [2021-12-06 20:56:51,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:56:51,407 INFO L933 BasicCegarLoop]: 1651 mSDtfsCounter, 3 mSDsluCounter, 4900 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6551 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:56:51,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6551 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:56:51,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2021-12-06 20:56:51,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2021-12-06 20:56:51,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 876 states have (on average 1.8299086757990868) internal successors, (1603), 877 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:56:51,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1603 transitions. [2021-12-06 20:56:51,433 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1603 transitions. Word has length 42 [2021-12-06 20:56:51,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:56:51,433 INFO L470 AbstractCegarLoop]: Abstraction has 878 states and 1603 transitions. [2021-12-06 20:56:51,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:56:51,434 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1603 transitions. [2021-12-06 20:56:51,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-06 20:56:51,435 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:56:51,435 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] [2021-12-06 20:56:51,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 20:56:51,436 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:56:51,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:56:51,436 INFO L85 PathProgramCache]: Analyzing trace with hash -364915275, now seen corresponding path program 1 times [2021-12-06 20:56:51,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:56:51,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858619102] [2021-12-06 20:56:51,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:56:51,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:56:51,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:56:51,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:56:51,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:56:51,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858619102] [2021-12-06 20:56:51,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858619102] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:56:51,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:56:51,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 20:56:51,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796388097] [2021-12-06 20:56:51,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:56:51,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:56:51,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:56:51,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:56:51,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:56:51,528 INFO L87 Difference]: Start difference. First operand 878 states and 1603 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:56:54,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:56:54,045 INFO L93 Difference]: Finished difference Result 2382 states and 4476 transitions. [2021-12-06 20:56:54,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:56:54,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-12-06 20:56:54,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:56:54,054 INFO L225 Difference]: With dead ends: 2382 [2021-12-06 20:56:54,054 INFO L226 Difference]: Without dead ends: 1629 [2021-12-06 20:56:54,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:56:54,056 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 931 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 3275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-06 20:56:54,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [931 Valid, 241 Invalid, 3275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-06 20:56:54,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2021-12-06 20:56:54,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1629. [2021-12-06 20:56:54,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1629 states, 1627 states have (on average 1.830362630608482) internal successors, (2978), 1628 states have internal predecessors, (2978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:56:54,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 2978 transitions. [2021-12-06 20:56:54,097 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 2978 transitions. Word has length 48 [2021-12-06 20:56:54,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:56:54,097 INFO L470 AbstractCegarLoop]: Abstraction has 1629 states and 2978 transitions. [2021-12-06 20:56:54,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:56:54,097 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 2978 transitions. [2021-12-06 20:56:54,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-06 20:56:54,101 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:56:54,101 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] [2021-12-06 20:56:54,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 20:56:54,101 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:56:54,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:56:54,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1207745120, now seen corresponding path program 1 times [2021-12-06 20:56:54,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:56:54,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843673193] [2021-12-06 20:56:54,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:56:54,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:56:54,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:56:54,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:56:54,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:56:54,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843673193] [2021-12-06 20:56:54,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843673193] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:56:54,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:56:54,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:56:54,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177829763] [2021-12-06 20:56:54,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:56:54,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:56:54,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:56:54,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:56:54,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:56:54,177 INFO L87 Difference]: Start difference. First operand 1629 states and 2978 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:56:54,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:56:54,203 INFO L93 Difference]: Finished difference Result 1759 states and 3184 transitions. [2021-12-06 20:56:54,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:56:54,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2021-12-06 20:56:54,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:56:54,212 INFO L225 Difference]: With dead ends: 1759 [2021-12-06 20:56:54,212 INFO L226 Difference]: Without dead ends: 1691 [2021-12-06 20:56:54,213 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 [2021-12-06 20:56:54,214 INFO L933 BasicCegarLoop]: 1697 mSDtfsCounter, 1537 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 1803 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:56:54,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1537 Valid, 1803 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:56:54,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1691 states. [2021-12-06 20:56:54,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1691 to 1689. [2021-12-06 20:56:54,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1689 states, 1687 states have (on average 1.8221695317131001) internal successors, (3074), 1688 states have internal predecessors, (3074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:56:54,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 3074 transitions. [2021-12-06 20:56:54,255 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 3074 transitions. Word has length 91 [2021-12-06 20:56:54,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:56:54,255 INFO L470 AbstractCegarLoop]: Abstraction has 1689 states and 3074 transitions. [2021-12-06 20:56:54,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:56:54,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 3074 transitions. [2021-12-06 20:56:54,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-06 20:56:54,258 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:56:54,258 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] [2021-12-06 20:56:54,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 20:56:54,258 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:56:54,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:56:54,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1564953708, now seen corresponding path program 1 times [2021-12-06 20:56:54,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:56:54,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924161210] [2021-12-06 20:56:54,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:56:54,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:56:54,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:56:54,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:56:54,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:56:54,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924161210] [2021-12-06 20:56:54,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924161210] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:56:54,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:56:54,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:56:54,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780577649] [2021-12-06 20:56:54,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:56:54,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:56:54,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:56:54,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:56:54,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:56:54,321 INFO L87 Difference]: Start difference. First operand 1689 states and 3074 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:56:54,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:56:54,349 INFO L93 Difference]: Finished difference Result 1933 states and 3462 transitions. [2021-12-06 20:56:54,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:56:54,350 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2021-12-06 20:56:54,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:56:54,358 INFO L225 Difference]: With dead ends: 1933 [2021-12-06 20:56:54,358 INFO L226 Difference]: Without dead ends: 1805 [2021-12-06 20:56:54,359 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 [2021-12-06 20:56:54,360 INFO L933 BasicCegarLoop]: 1692 mSDtfsCounter, 1533 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 1802 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:56:54,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1533 Valid, 1802 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:56:54,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1805 states. [2021-12-06 20:56:54,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1805 to 1803. [2021-12-06 20:56:54,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1803 states, 1801 states have (on average 1.807329261521377) internal successors, (3255), 1802 states have internal predecessors, (3255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:56:54,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1803 states to 1803 states and 3255 transitions. [2021-12-06 20:56:54,400 INFO L78 Accepts]: Start accepts. Automaton has 1803 states and 3255 transitions. Word has length 91 [2021-12-06 20:56:54,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:56:54,401 INFO L470 AbstractCegarLoop]: Abstraction has 1803 states and 3255 transitions. [2021-12-06 20:56:54,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:56:54,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1803 states and 3255 transitions. [2021-12-06 20:56:54,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-06 20:56:54,402 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:56:54,402 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] [2021-12-06 20:56:54,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 20:56:54,402 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:56:54,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:56:54,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1479108296, now seen corresponding path program 1 times [2021-12-06 20:56:54,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:56:54,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236436516] [2021-12-06 20:56:54,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:56:54,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:56:54,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:56:54,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:56:54,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:56:54,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236436516] [2021-12-06 20:56:54,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236436516] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:56:54,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:56:54,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:56:54,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137179277] [2021-12-06 20:56:54,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:56:54,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:56:54,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:56:54,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:56:54,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:56:54,462 INFO L87 Difference]: Start difference. First operand 1803 states and 3255 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:56:54,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:56:54,493 INFO L93 Difference]: Finished difference Result 2263 states and 3985 transitions. [2021-12-06 20:56:54,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:56:54,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2021-12-06 20:56:54,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:56:54,503 INFO L225 Difference]: With dead ends: 2263 [2021-12-06 20:56:54,503 INFO L226 Difference]: Without dead ends: 2021 [2021-12-06 20:56:54,504 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 [2021-12-06 20:56:54,505 INFO L933 BasicCegarLoop]: 1687 mSDtfsCounter, 1529 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:56:54,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1529 Valid, 1801 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:56:54,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2021 states. [2021-12-06 20:56:54,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2021 to 2019. [2021-12-06 20:56:54,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2019 states, 2017 states have (on average 1.782350024789291) internal successors, (3595), 2018 states have internal predecessors, (3595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:56:54,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 3595 transitions. [2021-12-06 20:56:54,547 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 3595 transitions. Word has length 91 [2021-12-06 20:56:54,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:56:54,547 INFO L470 AbstractCegarLoop]: Abstraction has 2019 states and 3595 transitions. [2021-12-06 20:56:54,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:56:54,548 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 3595 transitions. [2021-12-06 20:56:54,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-06 20:56:54,548 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:56:54,548 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] [2021-12-06 20:56:54,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 20:56:54,549 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:56:54,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:56:54,549 INFO L85 PathProgramCache]: Analyzing trace with hash 733525566, now seen corresponding path program 1 times [2021-12-06 20:56:54,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:56:54,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739662376] [2021-12-06 20:56:54,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:56:54,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:56:54,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:56:54,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:56:54,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:56:54,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739662376] [2021-12-06 20:56:54,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739662376] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:56:54,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:56:54,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:56:54,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326966844] [2021-12-06 20:56:54,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:56:54,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:56:54,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:56:54,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:56:54,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:56:54,592 INFO L87 Difference]: Start difference. First operand 2019 states and 3595 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:56:54,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:56:54,621 INFO L93 Difference]: Finished difference Result 2887 states and 4965 transitions. [2021-12-06 20:56:54,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:56:54,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2021-12-06 20:56:54,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:56:54,632 INFO L225 Difference]: With dead ends: 2887 [2021-12-06 20:56:54,632 INFO L226 Difference]: Without dead ends: 2429 [2021-12-06 20:56:54,633 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 [2021-12-06 20:56:54,634 INFO L933 BasicCegarLoop]: 1682 mSDtfsCounter, 1525 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 1800 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:56:54,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1525 Valid, 1800 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:56:54,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2429 states. [2021-12-06 20:56:54,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2429 to 2427. [2021-12-06 20:56:54,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2427 states, 2425 states have (on average 1.7447422680412372) internal successors, (4231), 2426 states have internal predecessors, (4231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:56:54,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2427 states to 2427 states and 4231 transitions. [2021-12-06 20:56:54,704 INFO L78 Accepts]: Start accepts. Automaton has 2427 states and 4231 transitions. Word has length 91 [2021-12-06 20:56:54,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:56:54,704 INFO L470 AbstractCegarLoop]: Abstraction has 2427 states and 4231 transitions. [2021-12-06 20:56:54,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:56:54,705 INFO L276 IsEmpty]: Start isEmpty. Operand 2427 states and 4231 transitions. [2021-12-06 20:56:54,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-06 20:56:54,706 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:56:54,706 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] [2021-12-06 20:56:54,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 20:56:54,707 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:56:54,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:56:54,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1206505292, now seen corresponding path program 1 times [2021-12-06 20:56:54,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:56:54,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702115028] [2021-12-06 20:56:54,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:56:54,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:56:54,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:56:54,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:56:54,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:56:54,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702115028] [2021-12-06 20:56:54,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702115028] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:56:54,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:56:54,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:56:54,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579281194] [2021-12-06 20:56:54,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:56:54,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:56:54,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:56:54,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:56:54,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:56:54,764 INFO L87 Difference]: Start difference. First operand 2427 states and 4231 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:56:54,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:56:54,807 INFO L93 Difference]: Finished difference Result 4063 states and 6793 transitions. [2021-12-06 20:56:54,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:56:54,808 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2021-12-06 20:56:54,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:56:54,821 INFO L225 Difference]: With dead ends: 4063 [2021-12-06 20:56:54,821 INFO L226 Difference]: Without dead ends: 3197 [2021-12-06 20:56:54,823 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 [2021-12-06 20:56:54,823 INFO L933 BasicCegarLoop]: 1677 mSDtfsCounter, 1521 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 1799 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:56:54,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1521 Valid, 1799 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:56:54,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3197 states. [2021-12-06 20:56:54,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3197 to 3195. [2021-12-06 20:56:54,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3195 states, 3193 states have (on average 1.6958972752896961) internal successors, (5415), 3194 states have internal predecessors, (5415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:56:54,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3195 states to 3195 states and 5415 transitions. [2021-12-06 20:56:54,885 INFO L78 Accepts]: Start accepts. Automaton has 3195 states and 5415 transitions. Word has length 91 [2021-12-06 20:56:54,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:56:54,885 INFO L470 AbstractCegarLoop]: Abstraction has 3195 states and 5415 transitions. [2021-12-06 20:56:54,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:56:54,885 INFO L276 IsEmpty]: Start isEmpty. Operand 3195 states and 5415 transitions. [2021-12-06 20:56:54,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-06 20:56:54,886 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:56:54,886 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] [2021-12-06 20:56:54,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 20:56:54,886 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:56:54,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:56:54,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1494177322, now seen corresponding path program 1 times [2021-12-06 20:56:54,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:56:54,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012489759] [2021-12-06 20:56:54,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:56:54,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:56:54,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:56:54,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:56:54,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:56:54,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012489759] [2021-12-06 20:56:54,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012489759] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:56:54,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:56:54,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 20:56:54,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419206538] [2021-12-06 20:56:54,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:56:54,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 20:56:54,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:56:54,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 20:56:54,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:56:54,958 INFO L87 Difference]: Start difference. First operand 3195 states and 5415 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:56:55,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:56:55,612 INFO L93 Difference]: Finished difference Result 26071 states and 41045 transitions. [2021-12-06 20:56:55,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 20:56:55,613 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2021-12-06 20:56:55,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:56:55,679 INFO L225 Difference]: With dead ends: 26071 [2021-12-06 20:56:55,679 INFO L226 Difference]: Without dead ends: 24437 [2021-12-06 20:56:55,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2021-12-06 20:56:55,686 INFO L933 BasicCegarLoop]: 1597 mSDtfsCounter, 13389 mSDsluCounter, 1514 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13389 SdHoareTripleChecker+Valid, 3111 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:56:55,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13389 Valid, 3111 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:56:55,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24437 states. [2021-12-06 20:56:55,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24437 to 4827. [2021-12-06 20:56:55,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4827 states, 4825 states have (on average 1.6362694300518135) internal successors, (7895), 4826 states have internal predecessors, (7895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:56:55,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4827 states to 4827 states and 7895 transitions. [2021-12-06 20:56:55,923 INFO L78 Accepts]: Start accepts. Automaton has 4827 states and 7895 transitions. Word has length 91 [2021-12-06 20:56:55,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:56:55,924 INFO L470 AbstractCegarLoop]: Abstraction has 4827 states and 7895 transitions. [2021-12-06 20:56:55,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:56:55,924 INFO L276 IsEmpty]: Start isEmpty. Operand 4827 states and 7895 transitions. [2021-12-06 20:56:55,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-06 20:56:55,925 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:56:55,925 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] [2021-12-06 20:56:55,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 20:56:55,925 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:56:55,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:56:55,925 INFO L85 PathProgramCache]: Analyzing trace with hash -30360326, now seen corresponding path program 1 times [2021-12-06 20:56:55,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:56:55,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213866842] [2021-12-06 20:56:55,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:56:55,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:56:55,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:56:55,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:56:55,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:56:55,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213866842] [2021-12-06 20:56:55,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213866842] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:56:55,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:56:55,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:56:55,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017008880] [2021-12-06 20:56:55,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:56:55,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:56:55,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:56:55,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:56:55,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:56:55,960 INFO L87 Difference]: Start difference. First operand 4827 states and 7895 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:56:56,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:56:56,088 INFO L93 Difference]: Finished difference Result 9649 states and 15307 transitions. [2021-12-06 20:56:56,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:56:56,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-12-06 20:56:56,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:56:56,098 INFO L225 Difference]: With dead ends: 9649 [2021-12-06 20:56:56,098 INFO L226 Difference]: Without dead ends: 6383 [2021-12-06 20:56:56,102 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 [2021-12-06 20:56:56,103 INFO L933 BasicCegarLoop]: 1632 mSDtfsCounter, 1505 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 1735 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:56:56,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1505 Valid, 1735 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:56:56,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6383 states. [2021-12-06 20:56:56,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6383 to 6381. [2021-12-06 20:56:56,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6381 states, 6379 states have (on average 1.6041699325913152) internal successors, (10233), 6380 states have internal predecessors, (10233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:56:56,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6381 states to 6381 states and 10233 transitions. [2021-12-06 20:56:56,308 INFO L78 Accepts]: Start accepts. Automaton has 6381 states and 10233 transitions. Word has length 93 [2021-12-06 20:56:56,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:56:56,308 INFO L470 AbstractCegarLoop]: Abstraction has 6381 states and 10233 transitions. [2021-12-06 20:56:56,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:56:56,308 INFO L276 IsEmpty]: Start isEmpty. Operand 6381 states and 10233 transitions. [2021-12-06 20:56:56,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-06 20:56:56,309 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:56:56,309 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:56:56,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 20:56:56,310 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:56:56,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:56:56,310 INFO L85 PathProgramCache]: Analyzing trace with hash 36133186, now seen corresponding path program 1 times [2021-12-06 20:56:56,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:56:56,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192579922] [2021-12-06 20:56:56,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:56:56,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:56:56,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:56:56,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:56:56,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:56:56,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192579922] [2021-12-06 20:56:56,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192579922] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:56:56,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:56:56,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 20:56:56,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186292668] [2021-12-06 20:56:56,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:56:56,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 20:56:56,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:56:56,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 20:56:56,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:56:56,475 INFO L87 Difference]: Start difference. First operand 6381 states and 10233 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:56:56,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:56:56,835 INFO L93 Difference]: Finished difference Result 11201 states and 17595 transitions. [2021-12-06 20:56:56,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 20:56:56,836 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-12-06 20:56:56,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:56:56,845 INFO L225 Difference]: With dead ends: 11201 [2021-12-06 20:56:56,845 INFO L226 Difference]: Without dead ends: 6383 [2021-12-06 20:56:56,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2021-12-06 20:56:56,851 INFO L933 BasicCegarLoop]: 1643 mSDtfsCounter, 3426 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3426 SdHoareTripleChecker+Valid, 2285 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:56:56,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3426 Valid, 2285 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:56:56,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6383 states. [2021-12-06 20:56:57,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6383 to 6381. [2021-12-06 20:56:57,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6381 states, 6379 states have (on average 1.596645242200972) internal successors, (10185), 6380 states have internal predecessors, (10185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:56:57,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6381 states to 6381 states and 10185 transitions. [2021-12-06 20:56:57,051 INFO L78 Accepts]: Start accepts. Automaton has 6381 states and 10185 transitions. Word has length 93 [2021-12-06 20:56:57,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:56:57,052 INFO L470 AbstractCegarLoop]: Abstraction has 6381 states and 10185 transitions. [2021-12-06 20:56:57,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:56:57,052 INFO L276 IsEmpty]: Start isEmpty. Operand 6381 states and 10185 transitions. [2021-12-06 20:56:57,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-06 20:56:57,053 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:56:57,053 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:56:57,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 20:56:57,053 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:56:57,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:56:57,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1825047262, now seen corresponding path program 1 times [2021-12-06 20:56:57,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:56:57,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110928603] [2021-12-06 20:56:57,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:56:57,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:56:57,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:56:57,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:56:57,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:56:57,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110928603] [2021-12-06 20:56:57,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110928603] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:56:57,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:56:57,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:56:57,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912850285] [2021-12-06 20:56:57,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:56:57,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:56:57,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:56:57,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:56:57,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:56:57,093 INFO L87 Difference]: Start difference. First operand 6381 states and 10185 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:56:57,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:56:57,355 INFO L93 Difference]: Finished difference Result 15441 states and 23851 transitions. [2021-12-06 20:56:57,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:56:57,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-12-06 20:56:57,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:56:57,378 INFO L225 Difference]: With dead ends: 15441 [2021-12-06 20:56:57,378 INFO L226 Difference]: Without dead ends: 10623 [2021-12-06 20:56:57,385 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 [2021-12-06 20:56:57,386 INFO L933 BasicCegarLoop]: 1659 mSDtfsCounter, 1513 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:56:57,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1513 Valid, 1789 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:56:57,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10623 states. [2021-12-06 20:56:57,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10623 to 10621. [2021-12-06 20:56:57,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10621 states, 10619 states have (on average 1.5482625482625483) internal successors, (16441), 10620 states have internal predecessors, (16441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:56:57,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10621 states to 10621 states and 16441 transitions. [2021-12-06 20:56:57,717 INFO L78 Accepts]: Start accepts. Automaton has 10621 states and 16441 transitions. Word has length 93 [2021-12-06 20:56:57,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:56:57,717 INFO L470 AbstractCegarLoop]: Abstraction has 10621 states and 16441 transitions. [2021-12-06 20:56:57,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:56:57,717 INFO L276 IsEmpty]: Start isEmpty. Operand 10621 states and 16441 transitions. [2021-12-06 20:56:57,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-06 20:56:57,718 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:56:57,718 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:56:57,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 20:56:57,718 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:56:57,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:56:57,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1222412418, now seen corresponding path program 1 times [2021-12-06 20:56:57,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:56:57,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525877885] [2021-12-06 20:56:57,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:56:57,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:56:57,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:56:57,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:56:57,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:56:57,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525877885] [2021-12-06 20:56:57,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525877885] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:56:57,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:56:57,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:56:57,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125052902] [2021-12-06 20:56:57,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:56:57,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:56:57,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:56:57,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:56:57,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:56:57,751 INFO L87 Difference]: Start difference. First operand 10621 states and 16441 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:56:58,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:56:58,232 INFO L93 Difference]: Finished difference Result 27585 states and 41659 transitions. [2021-12-06 20:56:58,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:56:58,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-12-06 20:56:58,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:56:58,250 INFO L225 Difference]: With dead ends: 27585 [2021-12-06 20:56:58,250 INFO L226 Difference]: Without dead ends: 18527 [2021-12-06 20:56:58,258 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 [2021-12-06 20:56:58,258 INFO L933 BasicCegarLoop]: 1672 mSDtfsCounter, 1517 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 1798 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:56:58,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1517 Valid, 1798 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:56:58,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18527 states. [2021-12-06 20:56:58,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18527 to 18525. [2021-12-06 20:56:58,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18525 states, 18523 states have (on average 1.5060735302056902) internal successors, (27897), 18524 states have internal predecessors, (27897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:56:58,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18525 states to 18525 states and 27897 transitions. [2021-12-06 20:56:58,844 INFO L78 Accepts]: Start accepts. Automaton has 18525 states and 27897 transitions. Word has length 93 [2021-12-06 20:56:58,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:56:58,845 INFO L470 AbstractCegarLoop]: Abstraction has 18525 states and 27897 transitions. [2021-12-06 20:56:58,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:56:58,845 INFO L276 IsEmpty]: Start isEmpty. Operand 18525 states and 27897 transitions. [2021-12-06 20:56:58,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-06 20:56:58,845 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:56:58,845 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] [2021-12-06 20:56:58,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 20:56:58,846 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:56:58,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:56:58,846 INFO L85 PathProgramCache]: Analyzing trace with hash 705405902, now seen corresponding path program 1 times [2021-12-06 20:56:58,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:56:58,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348543364] [2021-12-06 20:56:58,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:56:58,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:56:58,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:56:58,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:56:58,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:56:58,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348543364] [2021-12-06 20:56:58,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348543364] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:56:58,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:56:58,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 20:56:58,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906281525] [2021-12-06 20:56:58,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:56:58,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:56:58,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:56:58,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:56:58,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:56:58,902 INFO L87 Difference]: Start difference. First operand 18525 states and 27897 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:57:00,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:57:00,102 INFO L93 Difference]: Finished difference Result 51105 states and 76091 transitions. [2021-12-06 20:57:00,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 20:57:00,103 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2021-12-06 20:57:00,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:57:00,133 INFO L225 Difference]: With dead ends: 51105 [2021-12-06 20:57:00,133 INFO L226 Difference]: Without dead ends: 34143 [2021-12-06 20:57:00,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:57:00,148 INFO L933 BasicCegarLoop]: 1560 mSDtfsCounter, 5126 mSDsluCounter, 1611 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5126 SdHoareTripleChecker+Valid, 3171 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:57:00,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5126 Valid, 3171 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:57:00,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34143 states. [2021-12-06 20:57:01,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34143 to 30045. [2021-12-06 20:57:01,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30045 states, 30043 states have (on average 1.490962953100556) internal successors, (44793), 30044 states have internal predecessors, (44793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:57:01,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30045 states to 30045 states and 44793 transitions. [2021-12-06 20:57:01,241 INFO L78 Accepts]: Start accepts. Automaton has 30045 states and 44793 transitions. Word has length 94 [2021-12-06 20:57:01,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:57:01,241 INFO L470 AbstractCegarLoop]: Abstraction has 30045 states and 44793 transitions. [2021-12-06 20:57:01,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:57:01,241 INFO L276 IsEmpty]: Start isEmpty. Operand 30045 states and 44793 transitions. [2021-12-06 20:57:01,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-06 20:57:01,242 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:57:01,242 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] [2021-12-06 20:57:01,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 20:57:01,242 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:57:01,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:57:01,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1549411404, now seen corresponding path program 1 times [2021-12-06 20:57:01,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:57:01,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872457430] [2021-12-06 20:57:01,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:57:01,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:57:01,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:01,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:57:01,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:57:01,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872457430] [2021-12-06 20:57:01,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872457430] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:57:01,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:57:01,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 20:57:01,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894963123] [2021-12-06 20:57:01,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:57:01,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:57:01,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:57:01,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:57:01,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:57:01,288 INFO L87 Difference]: Start difference. First operand 30045 states and 44793 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:57:02,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:57:02,502 INFO L93 Difference]: Finished difference Result 58527 states and 86714 transitions. [2021-12-06 20:57:02,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 20:57:02,503 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2021-12-06 20:57:02,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:57:02,529 INFO L225 Difference]: With dead ends: 58527 [2021-12-06 20:57:02,529 INFO L226 Difference]: Without dead ends: 30045 [2021-12-06 20:57:02,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:57:02,546 INFO L933 BasicCegarLoop]: 1558 mSDtfsCounter, 4875 mSDsluCounter, 1532 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4875 SdHoareTripleChecker+Valid, 3090 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:57:02,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4875 Valid, 3090 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:57:02,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30045 states. [2021-12-06 20:57:03,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30045 to 30045. [2021-12-06 20:57:03,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30045 states, 30043 states have (on average 1.4803115534400693) internal successors, (44473), 30044 states have internal predecessors, (44473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:57:03,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30045 states to 30045 states and 44473 transitions. [2021-12-06 20:57:03,695 INFO L78 Accepts]: Start accepts. Automaton has 30045 states and 44473 transitions. Word has length 94 [2021-12-06 20:57:03,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:57:03,696 INFO L470 AbstractCegarLoop]: Abstraction has 30045 states and 44473 transitions. [2021-12-06 20:57:03,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:57:03,696 INFO L276 IsEmpty]: Start isEmpty. Operand 30045 states and 44473 transitions. [2021-12-06 20:57:03,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-06 20:57:03,696 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:57:03,696 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] [2021-12-06 20:57:03,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 20:57:03,697 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:57:03,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:57:03,697 INFO L85 PathProgramCache]: Analyzing trace with hash 847811530, now seen corresponding path program 1 times [2021-12-06 20:57:03,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:57:03,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963038694] [2021-12-06 20:57:03,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:57:03,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:57:03,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:03,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:57:03,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:57:03,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963038694] [2021-12-06 20:57:03,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963038694] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:57:03,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:57:03,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 20:57:03,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724127302] [2021-12-06 20:57:03,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:57:03,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 20:57:03,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:57:03,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 20:57:03,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:57:03,743 INFO L87 Difference]: Start difference. First operand 30045 states and 44473 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:57:06,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:57:06,089 INFO L93 Difference]: Finished difference Result 57088 states and 83171 transitions. [2021-12-06 20:57:06,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 20:57:06,090 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2021-12-06 20:57:06,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:57:06,143 INFO L225 Difference]: With dead ends: 57088 [2021-12-06 20:57:06,144 INFO L226 Difference]: Without dead ends: 57086 [2021-12-06 20:57:06,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:57:06,153 INFO L933 BasicCegarLoop]: 1637 mSDtfsCounter, 292 mSDsluCounter, 4799 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 6436 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:57:06,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 6436 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:57:06,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57086 states. [2021-12-06 20:57:07,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57086 to 31581. [2021-12-06 20:57:07,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31581 states, 31579 states have (on average 1.4549225751290416) internal successors, (45945), 31580 states have internal predecessors, (45945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:57:07,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31581 states to 31581 states and 45945 transitions. [2021-12-06 20:57:07,660 INFO L78 Accepts]: Start accepts. Automaton has 31581 states and 45945 transitions. Word has length 94 [2021-12-06 20:57:07,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:57:07,660 INFO L470 AbstractCegarLoop]: Abstraction has 31581 states and 45945 transitions. [2021-12-06 20:57:07,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:57:07,660 INFO L276 IsEmpty]: Start isEmpty. Operand 31581 states and 45945 transitions. [2021-12-06 20:57:07,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-06 20:57:07,664 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:57:07,664 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:57:07,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 20:57:07,664 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:57:07,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:57:07,665 INFO L85 PathProgramCache]: Analyzing trace with hash -328553153, now seen corresponding path program 1 times [2021-12-06 20:57:07,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:57:07,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299875667] [2021-12-06 20:57:07,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:57:07,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:57:07,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:07,718 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:57:07,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:57:07,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299875667] [2021-12-06 20:57:07,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299875667] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:57:07,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:57:07,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:57:07,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659943275] [2021-12-06 20:57:07,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:57:07,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:57:07,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:57:07,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:57:07,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:57:07,719 INFO L87 Difference]: Start difference. First operand 31581 states and 45945 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 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) [2021-12-06 20:57:13,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:57:13,432 INFO L93 Difference]: Finished difference Result 35338 states and 52943 transitions. [2021-12-06 20:57:13,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 20:57:13,433 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 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) Word has length 121 [2021-12-06 20:57:13,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:57:13,463 INFO L225 Difference]: With dead ends: 35338 [2021-12-06 20:57:13,464 INFO L226 Difference]: Without dead ends: 33834 [2021-12-06 20:57:13,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:57:13,471 INFO L933 BasicCegarLoop]: 857 mSDtfsCounter, 2476 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 4789 mSolverCounterSat, 1179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2476 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 5968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1179 IncrementalHoareTripleChecker+Valid, 4789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-12-06 20:57:13,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2476 Valid, 876 Invalid, 5968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1179 Valid, 4789 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-12-06 20:57:13,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33834 states. [2021-12-06 20:57:15,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33834 to 33834. [2021-12-06 20:57:15,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33834 states, 33832 states have (on average 1.4345885552139985) internal successors, (48535), 33833 states have internal predecessors, (48535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:57:15,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33834 states to 33834 states and 48535 transitions. [2021-12-06 20:57:15,285 INFO L78 Accepts]: Start accepts. Automaton has 33834 states and 48535 transitions. Word has length 121 [2021-12-06 20:57:15,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:57:15,285 INFO L470 AbstractCegarLoop]: Abstraction has 33834 states and 48535 transitions. [2021-12-06 20:57:15,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 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) [2021-12-06 20:57:15,285 INFO L276 IsEmpty]: Start isEmpty. Operand 33834 states and 48535 transitions. [2021-12-06 20:57:15,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-06 20:57:15,296 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:57:15,296 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:57:15,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 20:57:15,297 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:57:15,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:57:15,297 INFO L85 PathProgramCache]: Analyzing trace with hash 101873069, now seen corresponding path program 1 times [2021-12-06 20:57:15,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:57:15,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000863455] [2021-12-06 20:57:15,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:57:15,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:57:15,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:15,364 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-06 20:57:15,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:57:15,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000863455] [2021-12-06 20:57:15,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000863455] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:57:15,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:57:15,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 20:57:15,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107203556] [2021-12-06 20:57:15,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:57:15,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 20:57:15,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:57:15,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 20:57:15,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:57:15,366 INFO L87 Difference]: Start difference. First operand 33834 states and 48535 transitions. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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) [2021-12-06 20:57:25,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:57:25,639 INFO L93 Difference]: Finished difference Result 253562 states and 363519 transitions. [2021-12-06 20:57:25,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 20:57:25,640 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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 130 [2021-12-06 20:57:25,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:57:25,922 INFO L225 Difference]: With dead ends: 253562 [2021-12-06 20:57:25,922 INFO L226 Difference]: Without dead ends: 223544 [2021-12-06 20:57:25,961 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 [2021-12-06 20:57:25,962 INFO L933 BasicCegarLoop]: 1699 mSDtfsCounter, 10789 mSDsluCounter, 2399 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10789 SdHoareTripleChecker+Valid, 4098 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:57:25,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10789 Valid, 4098 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:57:26,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223544 states. [2021-12-06 20:57:30,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223544 to 63850. [2021-12-06 20:57:30,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63850 states, 63848 states have (on average 1.4297550432276658) internal successors, (91287), 63849 states have internal predecessors, (91287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:57:30,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63850 states to 63850 states and 91287 transitions. [2021-12-06 20:57:30,244 INFO L78 Accepts]: Start accepts. Automaton has 63850 states and 91287 transitions. Word has length 130 [2021-12-06 20:57:30,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:57:30,244 INFO L470 AbstractCegarLoop]: Abstraction has 63850 states and 91287 transitions. [2021-12-06 20:57:30,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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) [2021-12-06 20:57:30,245 INFO L276 IsEmpty]: Start isEmpty. Operand 63850 states and 91287 transitions. [2021-12-06 20:57:30,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-06 20:57:30,255 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:57:30,256 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:57:30,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 20:57:30,256 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:57:30,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:57:30,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1349380685, now seen corresponding path program 1 times [2021-12-06 20:57:30,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:57:30,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419561321] [2021-12-06 20:57:30,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:57:30,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:57:30,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:30,324 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 20:57:30,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:57:30,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419561321] [2021-12-06 20:57:30,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419561321] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:57:30,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:57:30,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 20:57:30,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49327233] [2021-12-06 20:57:30,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:57:30,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 20:57:30,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:57:30,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 20:57:30,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:57:30,326 INFO L87 Difference]: Start difference. First operand 63850 states and 91287 transitions. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:57:43,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:57:43,746 INFO L93 Difference]: Finished difference Result 283578 states and 406271 transitions. [2021-12-06 20:57:43,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 20:57:43,747 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 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 130 [2021-12-06 20:57:43,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:57:44,073 INFO L225 Difference]: With dead ends: 283578 [2021-12-06 20:57:44,073 INFO L226 Difference]: Without dead ends: 253560 [2021-12-06 20:57:44,123 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 [2021-12-06 20:57:44,124 INFO L933 BasicCegarLoop]: 1699 mSDtfsCounter, 10538 mSDsluCounter, 2452 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10538 SdHoareTripleChecker+Valid, 4151 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:57:44,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10538 Valid, 4151 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:57:44,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253560 states. [2021-12-06 20:57:51,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253560 to 108906. [2021-12-06 20:57:51,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108906 states, 108904 states have (on average 1.4244380371703518) internal successors, (155127), 108905 states have internal predecessors, (155127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:57:51,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108906 states to 108906 states and 155127 transitions. [2021-12-06 20:57:51,465 INFO L78 Accepts]: Start accepts. Automaton has 108906 states and 155127 transitions. Word has length 130 [2021-12-06 20:57:51,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:57:51,465 INFO L470 AbstractCegarLoop]: Abstraction has 108906 states and 155127 transitions. [2021-12-06 20:57:51,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:57:51,466 INFO L276 IsEmpty]: Start isEmpty. Operand 108906 states and 155127 transitions. [2021-12-06 20:57:51,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-06 20:57:51,480 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:57:51,480 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:57:51,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 20:57:51,480 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:57:51,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:57:51,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1476153629, now seen corresponding path program 1 times [2021-12-06 20:57:51,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:57:51,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956295130] [2021-12-06 20:57:51,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:57:51,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:57:51,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:51,557 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 20:57:51,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:57:51,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956295130] [2021-12-06 20:57:51,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956295130] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:57:51,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:57:51,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 20:57:51,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627166690] [2021-12-06 20:57:51,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:57:51,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 20:57:51,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:57:51,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 20:57:51,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:57:51,559 INFO L87 Difference]: Start difference. First operand 108906 states and 155127 transitions. Second operand has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:58:07,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:58:07,811 INFO L93 Difference]: Finished difference Result 313594 states and 449023 transitions. [2021-12-06 20:58:07,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 20:58:07,812 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 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 130 [2021-12-06 20:58:07,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:58:08,172 INFO L225 Difference]: With dead ends: 313594 [2021-12-06 20:58:08,173 INFO L226 Difference]: Without dead ends: 283576 [2021-12-06 20:58:08,225 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 [2021-12-06 20:58:08,226 INFO L933 BasicCegarLoop]: 1699 mSDtfsCounter, 10455 mSDsluCounter, 2503 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10455 SdHoareTripleChecker+Valid, 4202 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:58:08,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10455 Valid, 4202 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:58:08,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283576 states. [2021-12-06 20:58:17,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283576 to 138922. [2021-12-06 20:58:17,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138922 states, 138920 states have (on average 1.4244097322199827) internal successors, (197879), 138921 states have internal predecessors, (197879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:58:18,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138922 states to 138922 states and 197879 transitions. [2021-12-06 20:58:18,019 INFO L78 Accepts]: Start accepts. Automaton has 138922 states and 197879 transitions. Word has length 130 [2021-12-06 20:58:18,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:58:18,020 INFO L470 AbstractCegarLoop]: Abstraction has 138922 states and 197879 transitions. [2021-12-06 20:58:18,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:58:18,020 INFO L276 IsEmpty]: Start isEmpty. Operand 138922 states and 197879 transitions. [2021-12-06 20:58:18,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-06 20:58:18,034 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:58:18,035 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:58:18,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 20:58:18,035 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:58:18,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:58:18,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1583354627, now seen corresponding path program 1 times [2021-12-06 20:58:18,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:58:18,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739085832] [2021-12-06 20:58:18,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:58:18,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:58:18,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:18,103 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 20:58:18,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:58:18,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739085832] [2021-12-06 20:58:18,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739085832] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:58:18,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:58:18,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 20:58:18,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84031358] [2021-12-06 20:58:18,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:58:18,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 20:58:18,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:58:18,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 20:58:18,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:58:18,105 INFO L87 Difference]: Start difference. First operand 138922 states and 197879 transitions. Second operand has 9 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:58:38,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:58:38,067 INFO L93 Difference]: Finished difference Result 343610 states and 491775 transitions. [2021-12-06 20:58:38,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 20:58:38,067 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 0 states have call successors, (0), 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 130 [2021-12-06 20:58:38,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:58:38,476 INFO L225 Difference]: With dead ends: 343610 [2021-12-06 20:58:38,476 INFO L226 Difference]: Without dead ends: 313592 [2021-12-06 20:58:38,533 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 [2021-12-06 20:58:38,534 INFO L933 BasicCegarLoop]: 1699 mSDtfsCounter, 10492 mSDsluCounter, 2552 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10492 SdHoareTripleChecker+Valid, 4251 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:58:38,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10492 Valid, 4251 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:58:38,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313592 states. [2021-12-06 20:58:51,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313592 to 168938. [2021-12-06 20:58:51,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168938 states, 168936 states have (on average 1.424391485532983) internal successors, (240631), 168937 states have internal predecessors, (240631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:58:51,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168938 states to 168938 states and 240631 transitions. [2021-12-06 20:58:51,473 INFO L78 Accepts]: Start accepts. Automaton has 168938 states and 240631 transitions. Word has length 130 [2021-12-06 20:58:51,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:58:51,473 INFO L470 AbstractCegarLoop]: Abstraction has 168938 states and 240631 transitions. [2021-12-06 20:58:51,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:58:51,474 INFO L276 IsEmpty]: Start isEmpty. Operand 168938 states and 240631 transitions. [2021-12-06 20:58:51,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-06 20:58:51,490 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:58:51,490 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:58:51,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-06 20:58:51,491 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:58:51,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:58:51,491 INFO L85 PathProgramCache]: Analyzing trace with hash 162359075, now seen corresponding path program 1 times [2021-12-06 20:58:51,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:58:51,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032525946] [2021-12-06 20:58:51,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:58:51,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:58:51,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:51,652 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 20:58:51,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:58:51,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032525946] [2021-12-06 20:58:51,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032525946] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:58:51,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:58:51,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 20:58:51,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943418864] [2021-12-06 20:58:51,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:58:51,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 20:58:51,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:58:51,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 20:58:51,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:58:51,654 INFO L87 Difference]: Start difference. First operand 168938 states and 240631 transitions. Second operand has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:59:16,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:59:16,149 INFO L93 Difference]: Finished difference Result 373626 states and 534527 transitions. [2021-12-06 20:59:16,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 20:59:16,149 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 states have internal predecessors, (127), 0 states have call successors, (0), 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 130 [2021-12-06 20:59:16,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:59:16,600 INFO L225 Difference]: With dead ends: 373626 [2021-12-06 20:59:16,600 INFO L226 Difference]: Without dead ends: 343608 [2021-12-06 20:59:16,665 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 [2021-12-06 20:59:16,665 INFO L933 BasicCegarLoop]: 1699 mSDtfsCounter, 10619 mSDsluCounter, 2533 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10619 SdHoareTripleChecker+Valid, 4232 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:59:16,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10619 Valid, 4232 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:59:16,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343608 states. [2021-12-06 20:59:32,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343608 to 198954. [2021-12-06 20:59:32,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198954 states, 198952 states have (on average 1.4243787446218183) internal successors, (283383), 198953 states have internal predecessors, (283383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:59:32,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198954 states to 198954 states and 283383 transitions. [2021-12-06 20:59:32,867 INFO L78 Accepts]: Start accepts. Automaton has 198954 states and 283383 transitions. Word has length 130 [2021-12-06 20:59:32,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:59:32,868 INFO L470 AbstractCegarLoop]: Abstraction has 198954 states and 283383 transitions. [2021-12-06 20:59:32,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:59:32,868 INFO L276 IsEmpty]: Start isEmpty. Operand 198954 states and 283383 transitions. [2021-12-06 20:59:32,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-06 20:59:32,888 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:59:32,991 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:59:32,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-06 20:59:32,991 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:59:32,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:59:32,992 INFO L85 PathProgramCache]: Analyzing trace with hash -403461309, now seen corresponding path program 1 times [2021-12-06 20:59:32,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:59:32,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559110916] [2021-12-06 20:59:32,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:59:32,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:59:33,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:33,050 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 20:59:33,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:59:33,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559110916] [2021-12-06 20:59:33,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559110916] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:59:33,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:59:33,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 20:59:33,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127658237] [2021-12-06 20:59:33,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:59:33,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 20:59:33,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:59:33,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 20:59:33,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:59:33,051 INFO L87 Difference]: Start difference. First operand 198954 states and 283383 transitions. Second operand has 9 states, 9 states have (on average 14.222222222222221) internal successors, (128), 9 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:02,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:00:02,704 INFO L93 Difference]: Finished difference Result 403642 states and 577279 transitions. [2021-12-06 21:00:02,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:00:02,704 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.222222222222221) internal successors, (128), 9 states have internal predecessors, (128), 0 states have call successors, (0), 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 130 [2021-12-06 21:00:02,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:00:03,189 INFO L225 Difference]: With dead ends: 403642 [2021-12-06 21:00:03,189 INFO L226 Difference]: Without dead ends: 373624 [2021-12-06 21:00:03,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-12-06 21:00:03,259 INFO L933 BasicCegarLoop]: 1700 mSDtfsCounter, 10759 mSDsluCounter, 2512 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10759 SdHoareTripleChecker+Valid, 4212 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:00:03,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10759 Valid, 4212 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 21:00:03,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373624 states. [2021-12-06 21:00:23,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373624 to 228970. [2021-12-06 21:00:23,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228970 states, 228968 states have (on average 1.424369344187834) internal successors, (326135), 228969 states have internal predecessors, (326135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:23,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228970 states to 228970 states and 326135 transitions. [2021-12-06 21:00:23,818 INFO L78 Accepts]: Start accepts. Automaton has 228970 states and 326135 transitions. Word has length 130 [2021-12-06 21:00:23,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:00:23,819 INFO L470 AbstractCegarLoop]: Abstraction has 228970 states and 326135 transitions. [2021-12-06 21:00:23,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.222222222222221) internal successors, (128), 9 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:23,819 INFO L276 IsEmpty]: Start isEmpty. Operand 228970 states and 326135 transitions. [2021-12-06 21:00:23,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-06 21:00:23,835 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:00:23,835 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:00:23,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-06 21:00:23,835 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:00:23,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:00:23,835 INFO L85 PathProgramCache]: Analyzing trace with hash -214245533, now seen corresponding path program 1 times [2021-12-06 21:00:23,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:00:23,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423466744] [2021-12-06 21:00:23,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:00:23,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:00:23,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:23,892 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 21:00:23,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:00:23,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423466744] [2021-12-06 21:00:23,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423466744] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:00:23,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:00:23,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 21:00:23,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919269653] [2021-12-06 21:00:23,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:00:23,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 21:00:23,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:00:23,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 21:00:23,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-06 21:00:23,894 INFO L87 Difference]: Start difference. First operand 228970 states and 326135 transitions. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:59,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:00:59,086 INFO L93 Difference]: Finished difference Result 422778 states and 604799 transitions. [2021-12-06 21:00:59,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:00:59,087 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 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 130 [2021-12-06 21:00:59,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:00:59,641 INFO L225 Difference]: With dead ends: 422778 [2021-12-06 21:00:59,641 INFO L226 Difference]: Without dead ends: 398200 [2021-12-06 21:00:59,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-12-06 21:00:59,712 INFO L933 BasicCegarLoop]: 1697 mSDtfsCounter, 10756 mSDsluCounter, 2426 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10756 SdHoareTripleChecker+Valid, 4123 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:00:59,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10756 Valid, 4123 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 21:00:59,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398200 states. [2021-12-06 21:01:23,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398200 to 253546. [2021-12-06 21:01:23,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253546 states, 253544 states have (on average 1.4251372542832803) internal successors, (361335), 253545 states have internal predecessors, (361335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:23,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253546 states to 253546 states and 361335 transitions. [2021-12-06 21:01:23,805 INFO L78 Accepts]: Start accepts. Automaton has 253546 states and 361335 transitions. Word has length 130 [2021-12-06 21:01:23,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:01:23,805 INFO L470 AbstractCegarLoop]: Abstraction has 253546 states and 361335 transitions. [2021-12-06 21:01:23,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:23,805 INFO L276 IsEmpty]: Start isEmpty. Operand 253546 states and 361335 transitions. [2021-12-06 21:01:23,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-06 21:01:23,826 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:01:23,826 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:01:23,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-06 21:01:23,827 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:01:23,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:23,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1524812958, now seen corresponding path program 1 times [2021-12-06 21:01:23,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:01:23,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606224313] [2021-12-06 21:01:23,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:23,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:01:23,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:23,873 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:01:23,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:01:23,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606224313] [2021-12-06 21:01:23,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606224313] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:01:23,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:01:23,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:01:23,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70825334] [2021-12-06 21:01:23,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:01:23,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:01:23,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:01:23,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:01:23,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:01:23,876 INFO L87 Difference]: Start difference. First operand 253546 states and 361335 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:46,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:01:46,607 INFO L93 Difference]: Finished difference Result 503278 states and 717209 transitions. [2021-12-06 21:01:46,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:01:46,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2021-12-06 21:01:46,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:01:46,951 INFO L225 Difference]: With dead ends: 503278 [2021-12-06 21:01:46,951 INFO L226 Difference]: Without dead ends: 253548 [2021-12-06 21:01:47,058 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 [2021-12-06 21:01:47,058 INFO L933 BasicCegarLoop]: 1642 mSDtfsCounter, 68 mSDsluCounter, 1589 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 3231 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:01:47,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 3231 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:01:47,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253548 states. [2021-12-06 21:02:09,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253548 to 253546. [2021-12-06 21:02:09,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253546 states, 253544 states have (on average 1.4146617549616634) internal successors, (358679), 253545 states have internal predecessors, (358679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:10,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253546 states to 253546 states and 358679 transitions. [2021-12-06 21:02:10,030 INFO L78 Accepts]: Start accepts. Automaton has 253546 states and 358679 transitions. Word has length 131 [2021-12-06 21:02:10,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:02:10,031 INFO L470 AbstractCegarLoop]: Abstraction has 253546 states and 358679 transitions. [2021-12-06 21:02:10,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:10,031 INFO L276 IsEmpty]: Start isEmpty. Operand 253546 states and 358679 transitions. [2021-12-06 21:02:10,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-06 21:02:10,042 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:02:10,043 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:02:10,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-06 21:02:10,043 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:02:10,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:02:10,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1437694164, now seen corresponding path program 1 times [2021-12-06 21:02:10,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:02:10,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154605392] [2021-12-06 21:02:10,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:02:10,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:02:10,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:02:10,074 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:02:10,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:02:10,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154605392] [2021-12-06 21:02:10,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154605392] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:02:10,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:02:10,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:02:10,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935656040] [2021-12-06 21:02:10,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:02:10,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:02:10,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:02:10,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:02:10,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:02:10,076 INFO L87 Difference]: Start difference. First operand 253546 states and 358679 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:21,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:02:21,417 INFO L93 Difference]: Finished difference Result 378414 states and 535289 transitions. [2021-12-06 21:02:21,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:02:21,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2021-12-06 21:02:21,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:02:21,570 INFO L225 Difference]: With dead ends: 378414 [2021-12-06 21:02:21,570 INFO L226 Difference]: Without dead ends: 128684 [2021-12-06 21:02:21,653 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 [2021-12-06 21:02:21,653 INFO L933 BasicCegarLoop]: 1635 mSDtfsCounter, 64 mSDsluCounter, 1581 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 3216 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:02:21,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 3216 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:02:21,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128684 states. [2021-12-06 21:02:33,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128684 to 128682. [2021-12-06 21:02:33,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128682 states, 128680 states have (on average 1.404592788312092) internal successors, (180743), 128681 states have internal predecessors, (180743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:33,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128682 states to 128682 states and 180743 transitions. [2021-12-06 21:02:33,241 INFO L78 Accepts]: Start accepts. Automaton has 128682 states and 180743 transitions. Word has length 131 [2021-12-06 21:02:33,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:02:33,241 INFO L470 AbstractCegarLoop]: Abstraction has 128682 states and 180743 transitions. [2021-12-06 21:02:33,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:33,241 INFO L276 IsEmpty]: Start isEmpty. Operand 128682 states and 180743 transitions. [2021-12-06 21:02:33,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-06 21:02:33,248 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:02:33,249 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:02:33,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-06 21:02:33,249 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:02:33,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:02:33,249 INFO L85 PathProgramCache]: Analyzing trace with hash 318418954, now seen corresponding path program 1 times [2021-12-06 21:02:33,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:02:33,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963015348] [2021-12-06 21:02:33,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:02:33,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:02:33,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:02:33,416 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:02:33,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:02:33,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963015348] [2021-12-06 21:02:33,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963015348] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:02:33,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609895710] [2021-12-06 21:02:33,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:02:33,417 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:02:33,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1935a20f-6376-4d52-90bf-ef49a1c2771e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:02:33,418 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1935a20f-6376-4d52-90bf-ef49a1c2771e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:02:33,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1935a20f-6376-4d52-90bf-ef49a1c2771e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 21:02:33,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:02:33,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-06 21:02:33,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:02:33,785 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:02:33,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:02:34,307 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:02:34,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609895710] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 21:02:34,307 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 21:02:34,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 6] total 23 [2021-12-06 21:02:34,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938544103] [2021-12-06 21:02:34,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 21:02:34,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-06 21:02:34,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:02:34,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-06 21:02:34,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2021-12-06 21:02:34,309 INFO L87 Difference]: Start difference. First operand 128682 states and 180743 transitions. Second operand has 23 states, 23 states have (on average 16.52173913043478) internal successors, (380), 23 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:04:47,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:04:47,436 INFO L93 Difference]: Finished difference Result 1421280 states and 1984858 transitions. [2021-12-06 21:04:47,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2021-12-06 21:04:47,437 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 16.52173913043478) internal successors, (380), 23 states have internal predecessors, (380), 0 states have call successors, (0), 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 131 [2021-12-06 21:04:47,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:04:49,395 INFO L225 Difference]: With dead ends: 1421280 [2021-12-06 21:04:49,395 INFO L226 Difference]: Without dead ends: 1287790 [2021-12-06 21:04:49,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11270 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=4410, Invalid=22980, Unknown=0, NotChecked=0, Total=27390 [2021-12-06 21:04:49,807 INFO L933 BasicCegarLoop]: 1965 mSDtfsCounter, 30567 mSDsluCounter, 13850 mSDsCounter, 0 mSdLazyCounter, 6915 mSolverCounterSat, 580 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30567 SdHoareTripleChecker+Valid, 15815 SdHoareTripleChecker+Invalid, 7495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 580 IncrementalHoareTripleChecker+Valid, 6915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:04:49,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30567 Valid, 15815 Invalid, 7495 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [580 Valid, 6915 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-12-06 21:04:50,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287790 states. [2021-12-06 21:06:16,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287790 to 814226. [2021-12-06 21:06:17,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814226 states, 814224 states have (on average 1.3813778517950834) internal successors, (1124751), 814225 states have internal predecessors, (1124751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:19,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814226 states to 814226 states and 1124751 transitions. [2021-12-06 21:06:19,185 INFO L78 Accepts]: Start accepts. Automaton has 814226 states and 1124751 transitions. Word has length 131 [2021-12-06 21:06:19,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:06:19,185 INFO L470 AbstractCegarLoop]: Abstraction has 814226 states and 1124751 transitions. [2021-12-06 21:06:19,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 16.52173913043478) internal successors, (380), 23 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:19,185 INFO L276 IsEmpty]: Start isEmpty. Operand 814226 states and 1124751 transitions. [2021-12-06 21:06:19,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-06 21:06:19,194 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:06:19,194 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:06:19,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1935a20f-6376-4d52-90bf-ef49a1c2771e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 21:06:19,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1935a20f-6376-4d52-90bf-ef49a1c2771e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-06 21:06:19,396 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:06:19,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:06:19,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1058761409, now seen corresponding path program 1 times [2021-12-06 21:06:19,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:06:19,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918933877] [2021-12-06 21:06:19,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:06:19,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:06:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:19,587 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:06:19,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:06:19,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918933877] [2021-12-06 21:06:19,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918933877] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:06:19,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346443018] [2021-12-06 21:06:19,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:06:19,588 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:06:19,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1935a20f-6376-4d52-90bf-ef49a1c2771e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:06:19,588 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1935a20f-6376-4d52-90bf-ef49a1c2771e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:06:19,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1935a20f-6376-4d52-90bf-ef49a1c2771e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 21:06:19,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:19,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-06 21:06:19,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:06:20,440 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:06:20,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:06:21,271 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:06:21,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346443018] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 21:06:21,271 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 21:06:21,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 29 [2021-12-06 21:06:21,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765901321] [2021-12-06 21:06:21,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 21:06:21,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-06 21:06:21,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:06:21,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-06 21:06:21,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=766, Unknown=0, NotChecked=0, Total=870 [2021-12-06 21:06:21,273 INFO L87 Difference]: Start difference. First operand 814226 states and 1124751 transitions. Second operand has 30 states, 30 states have (on average 12.333333333333334) internal successors, (370), 29 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)