./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.8.1.ufo.UNBOUNDED.pals+Problem12_label09.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_22afb963-8d88-4ea0-8b21-29d76af890be/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22afb963-8d88-4ea0-8b21-29d76af890be/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_22afb963-8d88-4ea0-8b21-29d76af890be/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22afb963-8d88-4ea0-8b21-29d76af890be/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.8.1.ufo.UNBOUNDED.pals+Problem12_label09.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22afb963-8d88-4ea0-8b21-29d76af890be/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_22afb963-8d88-4ea0-8b21-29d76af890be/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 f0019835903a95f4d3f7c696114f56c447778d466a9f664790fb278d4bca829f --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 16:57:05,571 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 16:57:05,573 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 16:57:05,605 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 16:57:05,605 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 16:57:05,607 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 16:57:05,609 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 16:57:05,611 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 16:57:05,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 16:57:05,615 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 16:57:05,627 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 16:57:05,628 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 16:57:05,628 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 16:57:05,629 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 16:57:05,630 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 16:57:05,631 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 16:57:05,632 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 16:57:05,632 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 16:57:05,634 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 16:57:05,636 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 16:57:05,637 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 16:57:05,639 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 16:57:05,640 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 16:57:05,641 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 16:57:05,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 16:57:05,649 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 16:57:05,650 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 16:57:05,651 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 16:57:05,651 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 16:57:05,652 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 16:57:05,653 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 16:57:05,654 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 16:57:05,655 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 16:57:05,655 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 16:57:05,656 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 16:57:05,657 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 16:57:05,657 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 16:57:05,657 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 16:57:05,658 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 16:57:05,659 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 16:57:05,659 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 16:57:05,660 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22afb963-8d88-4ea0-8b21-29d76af890be/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 16:57:05,682 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 16:57:05,683 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 16:57:05,683 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 16:57:05,683 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 16:57:05,684 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 16:57:05,684 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 16:57:05,685 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 16:57:05,685 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 16:57:05,685 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 16:57:05,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 16:57:05,685 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 16:57:05,686 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 16:57:05,686 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 16:57:05,686 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 16:57:05,686 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 16:57:05,686 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 16:57:05,686 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 16:57:05,687 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 16:57:05,687 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 16:57:05,687 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 16:57:05,687 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 16:57:05,687 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 16:57:05,688 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 16:57:05,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 16:57:05,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 16:57:05,688 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 16:57:05,688 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 16:57:05,688 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 16:57:05,689 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 16:57:05,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 16:57:05,689 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 16:57:05,689 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 16:57:05,689 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 16:57:05,690 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 16:57:05,690 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_22afb963-8d88-4ea0-8b21-29d76af890be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22afb963-8d88-4ea0-8b21-29d76af890be/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f0019835903a95f4d3f7c696114f56c447778d466a9f664790fb278d4bca829f [2021-12-06 16:57:05,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 16:57:05,872 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 16:57:05,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 16:57:05,874 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 16:57:05,875 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 16:57:05,876 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22afb963-8d88-4ea0-8b21-29d76af890be/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/combinations/pals_lcr.8.1.ufo.UNBOUNDED.pals+Problem12_label09.c [2021-12-06 16:57:05,922 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22afb963-8d88-4ea0-8b21-29d76af890be/bin/uautomizer-DrprNOufMa/data/215cfd6c7/dae9ea3bbfaa450ca3ecaf9aa34cc467/FLAGb585edf4a [2021-12-06 16:57:06,500 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 16:57:06,501 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22afb963-8d88-4ea0-8b21-29d76af890be/sv-benchmarks/c/combinations/pals_lcr.8.1.ufo.UNBOUNDED.pals+Problem12_label09.c [2021-12-06 16:57:06,530 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22afb963-8d88-4ea0-8b21-29d76af890be/bin/uautomizer-DrprNOufMa/data/215cfd6c7/dae9ea3bbfaa450ca3ecaf9aa34cc467/FLAGb585edf4a [2021-12-06 16:57:06,971 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22afb963-8d88-4ea0-8b21-29d76af890be/bin/uautomizer-DrprNOufMa/data/215cfd6c7/dae9ea3bbfaa450ca3ecaf9aa34cc467 [2021-12-06 16:57:06,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 16:57:06,982 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 16:57:06,986 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 16:57:06,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 16:57:06,996 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 16:57:06,998 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 04:57:06" (1/1) ... [2021-12-06 16:57:07,000 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34502e58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:57:06, skipping insertion in model container [2021-12-06 16:57:07,000 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 04:57:06" (1/1) ... [2021-12-06 16:57:07,010 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 16:57:07,094 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 16:57:07,379 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_22afb963-8d88-4ea0-8b21-29d76af890be/sv-benchmarks/c/combinations/pals_lcr.8.1.ufo.UNBOUNDED.pals+Problem12_label09.c[26925,26938] [2021-12-06 16:57:07,429 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_22afb963-8d88-4ea0-8b21-29d76af890be/sv-benchmarks/c/combinations/pals_lcr.8.1.ufo.UNBOUNDED.pals+Problem12_label09.c[34673,34686] [2021-12-06 16:57:07,938 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 16:57:07,946 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 16:57:07,979 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_22afb963-8d88-4ea0-8b21-29d76af890be/sv-benchmarks/c/combinations/pals_lcr.8.1.ufo.UNBOUNDED.pals+Problem12_label09.c[26925,26938] [2021-12-06 16:57:07,989 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_22afb963-8d88-4ea0-8b21-29d76af890be/sv-benchmarks/c/combinations/pals_lcr.8.1.ufo.UNBOUNDED.pals+Problem12_label09.c[34673,34686] [2021-12-06 16:57:08,343 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 16:57:08,364 INFO L208 MainTranslator]: Completed translation [2021-12-06 16:57:08,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:57:08 WrapperNode [2021-12-06 16:57:08,365 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 16:57:08,365 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 16:57:08,365 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 16:57:08,366 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 16:57:08,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:57:08" (1/1) ... [2021-12-06 16:57:08,405 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:57:08" (1/1) ... [2021-12-06 16:57:08,650 INFO L137 Inliner]: procedures = 40, calls = 25, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 5280 [2021-12-06 16:57:08,650 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 16:57:08,651 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 16:57:08,651 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 16:57:08,651 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 16:57:08,660 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:57:08" (1/1) ... [2021-12-06 16:57:08,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:57:08" (1/1) ... [2021-12-06 16:57:08,731 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:57:08" (1/1) ... [2021-12-06 16:57:08,731 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:57:08" (1/1) ... [2021-12-06 16:57:08,869 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:57:08" (1/1) ... [2021-12-06 16:57:08,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:57:08" (1/1) ... [2021-12-06 16:57:08,931 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:57:08" (1/1) ... [2021-12-06 16:57:09,004 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 16:57:09,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 16:57:09,005 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 16:57:09,005 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 16:57:09,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:57:08" (1/1) ... [2021-12-06 16:57:09,015 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 16:57:09,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22afb963-8d88-4ea0-8b21-29d76af890be/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 16:57:09,036 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22afb963-8d88-4ea0-8b21-29d76af890be/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 16:57:09,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22afb963-8d88-4ea0-8b21-29d76af890be/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 16:57:09,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 16:57:09,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 16:57:09,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 16:57:09,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 16:57:09,182 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 16:57:09,184 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 16:57:12,175 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 16:57:12,192 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 16:57:12,192 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-06 16:57:12,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 04:57:12 BoogieIcfgContainer [2021-12-06 16:57:12,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 16:57:12,196 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 16:57:12,196 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 16:57:12,198 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 16:57:12,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 04:57:06" (1/3) ... [2021-12-06 16:57:12,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76e0197c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 04:57:12, skipping insertion in model container [2021-12-06 16:57:12,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:57:08" (2/3) ... [2021-12-06 16:57:12,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76e0197c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 04:57:12, skipping insertion in model container [2021-12-06 16:57:12,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 04:57:12" (3/3) ... [2021-12-06 16:57:12,201 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.1.ufo.UNBOUNDED.pals+Problem12_label09.c [2021-12-06 16:57:12,206 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 16:57:12,206 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-06 16:57:12,244 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 16:57:12,250 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 16:57:12,250 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-06 16:57:12,279 INFO L276 IsEmpty]: Start isEmpty. Operand has 965 states, 962 states have (on average 1.8960498960498962) internal successors, (1824), 964 states have internal predecessors, (1824), 0 states have call successors, (0), 0 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 16:57:12,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-06 16:57:12,286 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 16:57:12,287 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] [2021-12-06 16:57:12,287 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 16:57:12,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 16:57:12,291 INFO L85 PathProgramCache]: Analyzing trace with hash -805214309, now seen corresponding path program 1 times [2021-12-06 16:57:12,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 16:57:12,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114921457] [2021-12-06 16:57:12,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 16:57:12,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 16:57:12,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 16:57:12,472 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 16:57:12,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 16:57:12,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114921457] [2021-12-06 16:57:12,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114921457] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 16:57:12,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 16:57:12,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 16:57:12,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626569446] [2021-12-06 16:57:12,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 16:57:12,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 16:57:12,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 16:57:12,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 16:57:12,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 16:57:12,510 INFO L87 Difference]: Start difference. First operand has 965 states, 962 states have (on average 1.8960498960498962) internal successors, (1824), 964 states have internal predecessors, (1824), 0 states have call successors, (0), 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 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 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 16:57:12,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 16:57:12,625 INFO L93 Difference]: Finished difference Result 1861 states and 3516 transitions. [2021-12-06 16:57:12,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 16:57:12,627 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2021-12-06 16:57:12,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 16:57:12,647 INFO L225 Difference]: With dead ends: 1861 [2021-12-06 16:57:12,648 INFO L226 Difference]: Without dead ends: 899 [2021-12-06 16:57:12,653 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 16:57:12,656 INFO L933 BasicCegarLoop]: 1755 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, 1755 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 16:57:12,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1755 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 16:57:12,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2021-12-06 16:57:12,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 899. [2021-12-06 16:57:12,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 897 states have (on average 1.8851727982162765) internal successors, (1691), 898 states have internal predecessors, (1691), 0 states have call successors, (0), 0 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 16:57:12,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1691 transitions. [2021-12-06 16:57:12,745 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1691 transitions. Word has length 46 [2021-12-06 16:57:12,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 16:57:12,745 INFO L470 AbstractCegarLoop]: Abstraction has 899 states and 1691 transitions. [2021-12-06 16:57:12,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 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 16:57:12,746 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1691 transitions. [2021-12-06 16:57:12,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-06 16:57:12,748 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 16:57:12,748 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] [2021-12-06 16:57:12,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 16:57:12,748 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 16:57:12,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 16:57:12,749 INFO L85 PathProgramCache]: Analyzing trace with hash 2117945689, now seen corresponding path program 1 times [2021-12-06 16:57:12,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 16:57:12,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113979029] [2021-12-06 16:57:12,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 16:57:12,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 16:57:12,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 16:57:12,894 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 16:57:12,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 16:57:12,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113979029] [2021-12-06 16:57:12,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113979029] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 16:57:12,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 16:57:12,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 16:57:12,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889767637] [2021-12-06 16:57:12,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 16:57:12,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 16:57:12,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 16:57:12,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 16:57:12,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 16:57:12,897 INFO L87 Difference]: Start difference. First operand 899 states and 1691 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 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 16:57:12,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 16:57:12,990 INFO L93 Difference]: Finished difference Result 981 states and 1819 transitions. [2021-12-06 16:57:12,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 16:57:12,991 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2021-12-06 16:57:12,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 16:57:12,999 INFO L225 Difference]: With dead ends: 981 [2021-12-06 16:57:12,999 INFO L226 Difference]: Without dead ends: 899 [2021-12-06 16:57:13,000 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 16:57:13,002 INFO L933 BasicCegarLoop]: 1689 mSDtfsCounter, 3 mSDsluCounter, 5003 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6692 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 16:57:13,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6692 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 16:57:13,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2021-12-06 16:57:13,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 899. [2021-12-06 16:57:13,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 897 states have (on average 1.8171683389074693) internal successors, (1630), 898 states have internal predecessors, (1630), 0 states have call successors, (0), 0 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 16:57:13,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1630 transitions. [2021-12-06 16:57:13,030 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1630 transitions. Word has length 46 [2021-12-06 16:57:13,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 16:57:13,030 INFO L470 AbstractCegarLoop]: Abstraction has 899 states and 1630 transitions. [2021-12-06 16:57:13,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 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 16:57:13,031 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1630 transitions. [2021-12-06 16:57:13,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-06 16:57:13,034 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 16:57:13,034 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 16:57:13,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 16:57:13,034 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 16:57:13,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 16:57:13,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1295391643, now seen corresponding path program 1 times [2021-12-06 16:57:13,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 16:57:13,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207006412] [2021-12-06 16:57:13,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 16:57:13,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 16:57:13,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 16:57:13,144 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 16:57:13,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 16:57:13,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207006412] [2021-12-06 16:57:13,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207006412] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 16:57:13,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 16:57:13,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 16:57:13,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608855911] [2021-12-06 16:57:13,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 16:57:13,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 16:57:13,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 16:57:13,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 16:57:13,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 16:57:13,147 INFO L87 Difference]: Start difference. First operand 899 states and 1630 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 16:57:17,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 16:57:17,849 INFO L93 Difference]: Finished difference Result 3154 states and 5939 transitions. [2021-12-06 16:57:17,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 16:57:17,849 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-12-06 16:57:17,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 16:57:17,859 INFO L225 Difference]: With dead ends: 3154 [2021-12-06 16:57:17,860 INFO L226 Difference]: Without dead ends: 2401 [2021-12-06 16:57:17,861 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 16:57:17,862 INFO L933 BasicCegarLoop]: 866 mSDtfsCounter, 2553 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2553 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 6515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1161 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-12-06 16:57:17,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2553 Valid, 884 Invalid, 6515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1161 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-12-06 16:57:17,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2401 states. [2021-12-06 16:57:17,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2401 to 2401. [2021-12-06 16:57:17,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2401 states, 2399 states have (on average 1.5606502709462275) internal successors, (3744), 2400 states have internal predecessors, (3744), 0 states have call successors, (0), 0 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 16:57:17,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2401 states to 2401 states and 3744 transitions. [2021-12-06 16:57:17,918 INFO L78 Accepts]: Start accepts. Automaton has 2401 states and 3744 transitions. Word has length 67 [2021-12-06 16:57:17,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 16:57:17,919 INFO L470 AbstractCegarLoop]: Abstraction has 2401 states and 3744 transitions. [2021-12-06 16:57:17,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 16:57:17,919 INFO L276 IsEmpty]: Start isEmpty. Operand 2401 states and 3744 transitions. [2021-12-06 16:57:17,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-06 16:57:17,923 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 16:57:17,923 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 16:57:17,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 16:57:17,923 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 16:57:17,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 16:57:17,924 INFO L85 PathProgramCache]: Analyzing trace with hash 211182729, now seen corresponding path program 1 times [2021-12-06 16:57:17,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 16:57:17,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751459110] [2021-12-06 16:57:17,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 16:57:17,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 16:57:17,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 16:57:18,024 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 16:57:18,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 16:57:18,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751459110] [2021-12-06 16:57:18,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751459110] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 16:57:18,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 16:57:18,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 16:57:18,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455068997] [2021-12-06 16:57:18,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 16:57:18,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 16:57:18,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 16:57:18,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 16:57:18,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 16:57:18,027 INFO L87 Difference]: Start difference. First operand 2401 states and 3744 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 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 16:57:18,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 16:57:18,054 INFO L93 Difference]: Finished difference Result 2551 states and 3982 transitions. [2021-12-06 16:57:18,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 16:57:18,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2021-12-06 16:57:18,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 16:57:18,065 INFO L225 Difference]: With dead ends: 2551 [2021-12-06 16:57:18,065 INFO L226 Difference]: Without dead ends: 2473 [2021-12-06 16:57:18,066 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 16:57:18,068 INFO L933 BasicCegarLoop]: 1724 mSDtfsCounter, 1549 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 1850 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 16:57:18,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1549 Valid, 1850 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 16:57:18,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2473 states. [2021-12-06 16:57:18,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2473 to 2471. [2021-12-06 16:57:18,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2471 states, 2469 states have (on average 1.5617658971243418) internal successors, (3856), 2470 states have internal predecessors, (3856), 0 states have call successors, (0), 0 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 16:57:18,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2471 states to 2471 states and 3856 transitions. [2021-12-06 16:57:18,115 INFO L78 Accepts]: Start accepts. Automaton has 2471 states and 3856 transitions. Word has length 106 [2021-12-06 16:57:18,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 16:57:18,115 INFO L470 AbstractCegarLoop]: Abstraction has 2471 states and 3856 transitions. [2021-12-06 16:57:18,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 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 16:57:18,116 INFO L276 IsEmpty]: Start isEmpty. Operand 2471 states and 3856 transitions. [2021-12-06 16:57:18,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-06 16:57:18,117 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 16:57:18,117 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 16:57:18,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 16:57:18,117 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 16:57:18,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 16:57:18,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1458691583, now seen corresponding path program 1 times [2021-12-06 16:57:18,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 16:57:18,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971493625] [2021-12-06 16:57:18,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 16:57:18,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 16:57:18,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 16:57:18,183 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 16:57:18,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 16:57:18,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971493625] [2021-12-06 16:57:18,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971493625] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 16:57:18,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 16:57:18,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 16:57:18,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399481059] [2021-12-06 16:57:18,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 16:57:18,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 16:57:18,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 16:57:18,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 16:57:18,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 16:57:18,186 INFO L87 Difference]: Start difference. First operand 2471 states and 3856 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 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 16:57:18,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 16:57:18,216 INFO L93 Difference]: Finished difference Result 2755 states and 4308 transitions. [2021-12-06 16:57:18,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 16:57:18,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2021-12-06 16:57:18,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 16:57:18,227 INFO L225 Difference]: With dead ends: 2755 [2021-12-06 16:57:18,227 INFO L226 Difference]: Without dead ends: 2607 [2021-12-06 16:57:18,228 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 16:57:18,229 INFO L933 BasicCegarLoop]: 1719 mSDtfsCounter, 1545 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 1849 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 16:57:18,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1545 Valid, 1849 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 16:57:18,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2607 states. [2021-12-06 16:57:18,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2607 to 2605. [2021-12-06 16:57:18,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2605 states, 2603 states have (on average 1.5631963119477525) internal successors, (4069), 2604 states have internal predecessors, (4069), 0 states have call successors, (0), 0 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 16:57:18,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2605 states to 2605 states and 4069 transitions. [2021-12-06 16:57:18,314 INFO L78 Accepts]: Start accepts. Automaton has 2605 states and 4069 transitions. Word has length 106 [2021-12-06 16:57:18,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 16:57:18,314 INFO L470 AbstractCegarLoop]: Abstraction has 2605 states and 4069 transitions. [2021-12-06 16:57:18,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 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 16:57:18,315 INFO L276 IsEmpty]: Start isEmpty. Operand 2605 states and 4069 transitions. [2021-12-06 16:57:18,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-06 16:57:18,316 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 16:57:18,316 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 16:57:18,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 16:57:18,316 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 16:57:18,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 16:57:18,317 INFO L85 PathProgramCache]: Analyzing trace with hash 717259381, now seen corresponding path program 1 times [2021-12-06 16:57:18,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 16:57:18,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936346333] [2021-12-06 16:57:18,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 16:57:18,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 16:57:18,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 16:57:18,373 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 16:57:18,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 16:57:18,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936346333] [2021-12-06 16:57:18,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936346333] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 16:57:18,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 16:57:18,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 16:57:18,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774639759] [2021-12-06 16:57:18,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 16:57:18,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 16:57:18,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 16:57:18,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 16:57:18,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 16:57:18,375 INFO L87 Difference]: Start difference. First operand 2605 states and 4069 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 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 16:57:18,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 16:57:18,412 INFO L93 Difference]: Finished difference Result 3145 states and 4927 transitions. [2021-12-06 16:57:18,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 16:57:18,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2021-12-06 16:57:18,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 16:57:18,425 INFO L225 Difference]: With dead ends: 3145 [2021-12-06 16:57:18,425 INFO L226 Difference]: Without dead ends: 2863 [2021-12-06 16:57:18,426 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 16:57:18,427 INFO L933 BasicCegarLoop]: 1714 mSDtfsCounter, 1541 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1541 SdHoareTripleChecker+Valid, 1848 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 16:57:18,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1541 Valid, 1848 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 16:57:18,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2863 states. [2021-12-06 16:57:18,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2863 to 2861. [2021-12-06 16:57:18,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2861 states, 2859 states have (on average 1.564533053515215) internal successors, (4473), 2860 states have internal predecessors, (4473), 0 states have call successors, (0), 0 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 16:57:18,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2861 states to 2861 states and 4473 transitions. [2021-12-06 16:57:18,488 INFO L78 Accepts]: Start accepts. Automaton has 2861 states and 4473 transitions. Word has length 106 [2021-12-06 16:57:18,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 16:57:18,489 INFO L470 AbstractCegarLoop]: Abstraction has 2861 states and 4473 transitions. [2021-12-06 16:57:18,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 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 16:57:18,489 INFO L276 IsEmpty]: Start isEmpty. Operand 2861 states and 4473 transitions. [2021-12-06 16:57:18,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-06 16:57:18,490 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 16:57:18,490 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 16:57:18,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 16:57:18,491 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 16:57:18,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 16:57:18,491 INFO L85 PathProgramCache]: Analyzing trace with hash -28323349, now seen corresponding path program 1 times [2021-12-06 16:57:18,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 16:57:18,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881972099] [2021-12-06 16:57:18,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 16:57:18,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 16:57:18,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 16:57:18,545 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 16:57:18,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 16:57:18,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881972099] [2021-12-06 16:57:18,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881972099] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 16:57:18,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 16:57:18,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 16:57:18,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521555592] [2021-12-06 16:57:18,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 16:57:18,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 16:57:18,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 16:57:18,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 16:57:18,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 16:57:18,546 INFO L87 Difference]: Start difference. First operand 2861 states and 4473 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 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 16:57:18,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 16:57:18,588 INFO L93 Difference]: Finished difference Result 3889 states and 6099 transitions. [2021-12-06 16:57:18,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 16:57:18,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2021-12-06 16:57:18,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 16:57:18,608 INFO L225 Difference]: With dead ends: 3889 [2021-12-06 16:57:18,608 INFO L226 Difference]: Without dead ends: 3351 [2021-12-06 16:57:18,610 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 16:57:18,611 INFO L933 BasicCegarLoop]: 1709 mSDtfsCounter, 1537 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 1847 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 16:57:18,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1537 Valid, 1847 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 16:57:18,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3351 states. [2021-12-06 16:57:18,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3351 to 3349. [2021-12-06 16:57:18,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3349 states, 3347 states have (on average 1.5646847923513594) internal successors, (5237), 3348 states have internal predecessors, (5237), 0 states have call successors, (0), 0 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 16:57:18,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3349 states to 3349 states and 5237 transitions. [2021-12-06 16:57:18,691 INFO L78 Accepts]: Start accepts. Automaton has 3349 states and 5237 transitions. Word has length 106 [2021-12-06 16:57:18,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 16:57:18,691 INFO L470 AbstractCegarLoop]: Abstraction has 3349 states and 5237 transitions. [2021-12-06 16:57:18,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 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 16:57:18,692 INFO L276 IsEmpty]: Start isEmpty. Operand 3349 states and 5237 transitions. [2021-12-06 16:57:18,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-06 16:57:18,693 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 16:57:18,693 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 16:57:18,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 16:57:18,693 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 16:57:18,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 16:57:18,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1968354207, now seen corresponding path program 1 times [2021-12-06 16:57:18,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 16:57:18,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762431432] [2021-12-06 16:57:18,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 16:57:18,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 16:57:18,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 16:57:18,746 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 16:57:18,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 16:57:18,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762431432] [2021-12-06 16:57:18,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762431432] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 16:57:18,747 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 16:57:18,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 16:57:18,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532792117] [2021-12-06 16:57:18,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 16:57:18,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 16:57:18,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 16:57:18,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 16:57:18,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 16:57:18,748 INFO L87 Difference]: Start difference. First operand 3349 states and 5237 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 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 16:57:18,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 16:57:18,804 INFO L93 Difference]: Finished difference Result 5305 states and 8311 transitions. [2021-12-06 16:57:18,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 16:57:18,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2021-12-06 16:57:18,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 16:57:18,821 INFO L225 Difference]: With dead ends: 5305 [2021-12-06 16:57:18,821 INFO L226 Difference]: Without dead ends: 4279 [2021-12-06 16:57:18,823 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 16:57:18,824 INFO L933 BasicCegarLoop]: 1704 mSDtfsCounter, 1533 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 1846 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 16:57:18,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1533 Valid, 1846 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 16:57:18,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4279 states. [2021-12-06 16:57:18,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4279 to 4277. [2021-12-06 16:57:18,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4277 states, 4275 states have (on average 1.5618713450292399) internal successors, (6677), 4276 states have internal predecessors, (6677), 0 states have call successors, (0), 0 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 16:57:18,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4277 states to 4277 states and 6677 transitions. [2021-12-06 16:57:18,908 INFO L78 Accepts]: Start accepts. Automaton has 4277 states and 6677 transitions. Word has length 106 [2021-12-06 16:57:18,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 16:57:18,908 INFO L470 AbstractCegarLoop]: Abstraction has 4277 states and 6677 transitions. [2021-12-06 16:57:18,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 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 16:57:18,908 INFO L276 IsEmpty]: Start isEmpty. Operand 4277 states and 6677 transitions. [2021-12-06 16:57:18,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-06 16:57:18,909 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 16:57:18,909 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 16:57:18,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 16:57:18,910 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 16:57:18,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 16:57:18,910 INFO L85 PathProgramCache]: Analyzing trace with hash 732328407, now seen corresponding path program 1 times [2021-12-06 16:57:18,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 16:57:18,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787492797] [2021-12-06 16:57:18,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 16:57:18,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 16:57:18,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 16:57:18,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 16:57:18,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 16:57:18,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787492797] [2021-12-06 16:57:18,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787492797] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 16:57:18,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 16:57:18,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 16:57:18,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218887650] [2021-12-06 16:57:18,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 16:57:18,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 16:57:18,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 16:57:18,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 16:57:18,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 16:57:18,956 INFO L87 Difference]: Start difference. First operand 4277 states and 6677 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 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 16:57:19,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 16:57:19,054 INFO L93 Difference]: Finished difference Result 7993 states and 12471 transitions. [2021-12-06 16:57:19,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 16:57:19,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2021-12-06 16:57:19,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 16:57:19,077 INFO L225 Difference]: With dead ends: 7993 [2021-12-06 16:57:19,077 INFO L226 Difference]: Without dead ends: 6039 [2021-12-06 16:57:19,079 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 16:57:19,080 INFO L933 BasicCegarLoop]: 1699 mSDtfsCounter, 1529 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 1845 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 16:57:19,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1529 Valid, 1845 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 16:57:19,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6039 states. [2021-12-06 16:57:19,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6039 to 6037. [2021-12-06 16:57:19,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6037 states, 6035 states have (on average 1.5544324772162386) internal successors, (9381), 6036 states have internal predecessors, (9381), 0 states have call successors, (0), 0 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 16:57:19,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6037 states to 6037 states and 9381 transitions. [2021-12-06 16:57:19,206 INFO L78 Accepts]: Start accepts. Automaton has 6037 states and 9381 transitions. Word has length 106 [2021-12-06 16:57:19,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 16:57:19,207 INFO L470 AbstractCegarLoop]: Abstraction has 6037 states and 9381 transitions. [2021-12-06 16:57:19,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 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 16:57:19,207 INFO L276 IsEmpty]: Start isEmpty. Operand 6037 states and 9381 transitions. [2021-12-06 16:57:19,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-06 16:57:19,208 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 16:57:19,208 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 16:57:19,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 16:57:19,208 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 16:57:19,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 16:57:19,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1070121549, now seen corresponding path program 1 times [2021-12-06 16:57:19,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 16:57:19,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905552022] [2021-12-06 16:57:19,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 16:57:19,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 16:57:19,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 16:57:19,253 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 16:57:19,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 16:57:19,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905552022] [2021-12-06 16:57:19,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905552022] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 16:57:19,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 16:57:19,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 16:57:19,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006014557] [2021-12-06 16:57:19,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 16:57:19,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 16:57:19,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 16:57:19,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 16:57:19,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 16:57:19,254 INFO L87 Difference]: Start difference. First operand 6037 states and 9381 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 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 16:57:19,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 16:57:19,386 INFO L93 Difference]: Finished difference Result 13081 states and 20263 transitions. [2021-12-06 16:57:19,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 16:57:19,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2021-12-06 16:57:19,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 16:57:19,400 INFO L225 Difference]: With dead ends: 13081 [2021-12-06 16:57:19,400 INFO L226 Difference]: Without dead ends: 9367 [2021-12-06 16:57:19,406 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 16:57:19,407 INFO L933 BasicCegarLoop]: 1694 mSDtfsCounter, 1525 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 1844 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 16:57:19,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1525 Valid, 1844 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 16:57:19,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9367 states. [2021-12-06 16:57:19,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9367 to 9365. [2021-12-06 16:57:19,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9365 states, 9363 states have (on average 1.54192032468226) internal successors, (14437), 9364 states have internal predecessors, (14437), 0 states have call successors, (0), 0 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 16:57:19,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9365 states to 9365 states and 14437 transitions. [2021-12-06 16:57:19,609 INFO L78 Accepts]: Start accepts. Automaton has 9365 states and 14437 transitions. Word has length 106 [2021-12-06 16:57:19,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 16:57:19,609 INFO L470 AbstractCegarLoop]: Abstraction has 9365 states and 14437 transitions. [2021-12-06 16:57:19,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 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 16:57:19,609 INFO L276 IsEmpty]: Start isEmpty. Operand 9365 states and 14437 transitions. [2021-12-06 16:57:19,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-06 16:57:19,610 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 16:57:19,610 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 16:57:19,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 16:57:19,611 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 16:57:19,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 16:57:19,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1478760321, now seen corresponding path program 1 times [2021-12-06 16:57:19,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 16:57:19,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993881791] [2021-12-06 16:57:19,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 16:57:19,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 16:57:19,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 16:57:19,718 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 16:57:19,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 16:57:19,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993881791] [2021-12-06 16:57:19,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993881791] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 16:57:19,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 16:57:19,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 16:57:19,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338428368] [2021-12-06 16:57:19,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 16:57:19,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 16:57:19,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 16:57:19,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 16:57:19,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 16:57:19,721 INFO L87 Difference]: Start difference. First operand 9365 states and 14437 transitions. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 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 16:57:22,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 16:57:22,076 INFO L93 Difference]: Finished difference Result 122037 states and 187509 transitions. [2021-12-06 16:57:22,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 16:57:22,077 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2021-12-06 16:57:22,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 16:57:22,256 INFO L225 Difference]: With dead ends: 122037 [2021-12-06 16:57:22,256 INFO L226 Difference]: Without dead ends: 114995 [2021-12-06 16:57:22,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2021-12-06 16:57:22,277 INFO L933 BasicCegarLoop]: 1626 mSDtfsCounter, 15488 mSDsluCounter, 3243 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15488 SdHoareTripleChecker+Valid, 4869 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 16:57:22,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15488 Valid, 4869 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 16:57:22,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114995 states. [2021-12-06 16:57:23,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114995 to 16405. [2021-12-06 16:57:23,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16405 states, 16403 states have (on average 1.5239285496555508) internal successors, (24997), 16404 states have internal predecessors, (24997), 0 states have call successors, (0), 0 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 16:57:23,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16405 states to 16405 states and 24997 transitions. [2021-12-06 16:57:23,458 INFO L78 Accepts]: Start accepts. Automaton has 16405 states and 24997 transitions. Word has length 106 [2021-12-06 16:57:23,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 16:57:23,458 INFO L470 AbstractCegarLoop]: Abstraction has 16405 states and 24997 transitions. [2021-12-06 16:57:23,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 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 16:57:23,458 INFO L276 IsEmpty]: Start isEmpty. Operand 16405 states and 24997 transitions. [2021-12-06 16:57:23,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-06 16:57:23,459 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 16:57:23,459 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 16:57:23,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 16:57:23,459 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 16:57:23,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 16:57:23,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1961193007, now seen corresponding path program 1 times [2021-12-06 16:57:23,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 16:57:23,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252464694] [2021-12-06 16:57:23,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 16:57:23,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 16:57:23,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 16:57:23,506 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 16:57:23,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 16:57:23,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252464694] [2021-12-06 16:57:23,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252464694] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 16:57:23,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 16:57:23,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 16:57:23,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757447443] [2021-12-06 16:57:23,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 16:57:23,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 16:57:23,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 16:57:23,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 16:57:23,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 16:57:23,508 INFO L87 Difference]: Start difference. First operand 16405 states and 24997 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 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 16:57:24,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 16:57:24,460 INFO L93 Difference]: Finished difference Result 43161 states and 65319 transitions. [2021-12-06 16:57:24,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 16:57:24,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2021-12-06 16:57:24,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 16:57:24,492 INFO L225 Difference]: With dead ends: 43161 [2021-12-06 16:57:24,492 INFO L226 Difference]: Without dead ends: 29079 [2021-12-06 16:57:24,502 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 16:57:24,503 INFO L933 BasicCegarLoop]: 1627 mSDtfsCounter, 1516 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 1744 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 16:57:24,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1516 Valid, 1744 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 16:57:24,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29079 states. [2021-12-06 16:57:25,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29079 to 28821. [2021-12-06 16:57:25,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28821 states, 28819 states have (on average 1.4936326728894131) internal successors, (43045), 28820 states have internal predecessors, (43045), 0 states have call successors, (0), 0 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 16:57:25,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28821 states to 28821 states and 43045 transitions. [2021-12-06 16:57:25,702 INFO L78 Accepts]: Start accepts. Automaton has 28821 states and 43045 transitions. Word has length 108 [2021-12-06 16:57:25,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 16:57:25,703 INFO L470 AbstractCegarLoop]: Abstraction has 28821 states and 43045 transitions. [2021-12-06 16:57:25,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 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 16:57:25,703 INFO L276 IsEmpty]: Start isEmpty. Operand 28821 states and 43045 transitions. [2021-12-06 16:57:25,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-06 16:57:25,704 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 16:57:25,704 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 16:57:25,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 16:57:25,704 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 16:57:25,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 16:57:25,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1894699495, now seen corresponding path program 1 times [2021-12-06 16:57:25,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 16:57:25,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232070688] [2021-12-06 16:57:25,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 16:57:25,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 16:57:25,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 16:57:25,928 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 16:57:25,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 16:57:25,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232070688] [2021-12-06 16:57:25,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232070688] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 16:57:25,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 16:57:25,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 16:57:25,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971054762] [2021-12-06 16:57:25,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 16:57:25,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 16:57:25,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 16:57:25,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 16:57:25,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-12-06 16:57:25,930 INFO L87 Difference]: Start difference. First operand 28821 states and 43045 transitions. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 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 16:57:27,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 16:57:27,293 INFO L93 Difference]: Finished difference Result 55321 states and 82471 transitions. [2021-12-06 16:57:27,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 16:57:27,294 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2021-12-06 16:57:27,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 16:57:27,320 INFO L225 Difference]: With dead ends: 55321 [2021-12-06 16:57:27,320 INFO L226 Difference]: Without dead ends: 28823 [2021-12-06 16:57:27,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2021-12-06 16:57:27,340 INFO L933 BasicCegarLoop]: 1620 mSDtfsCounter, 2091 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2091 SdHoareTripleChecker+Valid, 2600 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 16:57:27,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2091 Valid, 2600 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 16:57:27,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28823 states. [2021-12-06 16:57:28,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28823 to 28821. [2021-12-06 16:57:28,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28821 states, 28819 states have (on average 1.4847496443318644) internal successors, (42789), 28820 states have internal predecessors, (42789), 0 states have call successors, (0), 0 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 16:57:28,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28821 states to 28821 states and 42789 transitions. [2021-12-06 16:57:28,524 INFO L78 Accepts]: Start accepts. Automaton has 28821 states and 42789 transitions. Word has length 108 [2021-12-06 16:57:28,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 16:57:28,524 INFO L470 AbstractCegarLoop]: Abstraction has 28821 states and 42789 transitions. [2021-12-06 16:57:28,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 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 16:57:28,524 INFO L276 IsEmpty]: Start isEmpty. Operand 28821 states and 42789 transitions. [2021-12-06 16:57:28,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-06 16:57:28,525 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 16:57:28,525 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 16:57:28,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 16:57:28,525 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 16:57:28,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 16:57:28,526 INFO L85 PathProgramCache]: Analyzing trace with hash 979135041, now seen corresponding path program 1 times [2021-12-06 16:57:28,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 16:57:28,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831047982] [2021-12-06 16:57:28,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 16:57:28,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 16:57:28,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 16:57:28,588 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 16:57:28,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 16:57:28,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831047982] [2021-12-06 16:57:28,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831047982] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 16:57:28,589 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 16:57:28,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 16:57:28,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967060839] [2021-12-06 16:57:28,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 16:57:28,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 16:57:28,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 16:57:28,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 16:57:28,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 16:57:28,590 INFO L87 Difference]: Start difference. First operand 28821 states and 42789 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 16:57:29,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 16:57:29,958 INFO L93 Difference]: Finished difference Result 55319 states and 81958 transitions. [2021-12-06 16:57:29,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 16:57:29,959 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-12-06 16:57:29,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 16:57:29,986 INFO L225 Difference]: With dead ends: 55319 [2021-12-06 16:57:29,986 INFO L226 Difference]: Without dead ends: 28821 [2021-12-06 16:57:30,003 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 16:57:30,004 INFO L933 BasicCegarLoop]: 1568 mSDtfsCounter, 4843 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4843 SdHoareTripleChecker+Valid, 3092 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 16:57:30,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4843 Valid, 3092 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 16:57:30,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28821 states. [2021-12-06 16:57:31,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28821 to 28821. [2021-12-06 16:57:31,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28821 states, 28819 states have (on average 1.4758666157743157) internal successors, (42533), 28820 states have internal predecessors, (42533), 0 states have call successors, (0), 0 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 16:57:31,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28821 states to 28821 states and 42533 transitions. [2021-12-06 16:57:31,360 INFO L78 Accepts]: Start accepts. Automaton has 28821 states and 42533 transitions. Word has length 109 [2021-12-06 16:57:31,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 16:57:31,360 INFO L470 AbstractCegarLoop]: Abstraction has 28821 states and 42533 transitions. [2021-12-06 16:57:31,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 16:57:31,360 INFO L276 IsEmpty]: Start isEmpty. Operand 28821 states and 42533 transitions. [2021-12-06 16:57:31,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-06 16:57:31,361 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 16:57:31,361 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 16:57:31,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 16:57:31,361 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 16:57:31,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 16:57:31,361 INFO L85 PathProgramCache]: Analyzing trace with hash 278070463, now seen corresponding path program 1 times [2021-12-06 16:57:31,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 16:57:31,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457857064] [2021-12-06 16:57:31,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 16:57:31,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 16:57:31,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 16:57:31,433 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 16:57:31,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 16:57:31,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457857064] [2021-12-06 16:57:31,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457857064] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 16:57:31,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 16:57:31,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 16:57:31,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379365761] [2021-12-06 16:57:31,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 16:57:31,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 16:57:31,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 16:57:31,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 16:57:31,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 16:57:31,435 INFO L87 Difference]: Start difference. First operand 28821 states and 42533 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 16:57:33,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 16:57:33,465 INFO L93 Difference]: Finished difference Result 48447 states and 71002 transitions. [2021-12-06 16:57:33,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 16:57:33,465 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-12-06 16:57:33,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 16:57:33,508 INFO L225 Difference]: With dead ends: 48447 [2021-12-06 16:57:33,509 INFO L226 Difference]: Without dead ends: 48445 [2021-12-06 16:57:33,519 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 16:57:33,520 INFO L933 BasicCegarLoop]: 1688 mSDtfsCounter, 339 mSDsluCounter, 4889 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 6577 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 16:57:33,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 6577 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 16:57:33,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48445 states. [2021-12-06 16:57:34,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48445 to 29589. [2021-12-06 16:57:35,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29589 states, 29587 states have (on average 1.4591881569608274) internal successors, (43173), 29588 states have internal predecessors, (43173), 0 states have call successors, (0), 0 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 16:57:35,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29589 states to 29589 states and 43173 transitions. [2021-12-06 16:57:35,114 INFO L78 Accepts]: Start accepts. Automaton has 29589 states and 43173 transitions. Word has length 109 [2021-12-06 16:57:35,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 16:57:35,115 INFO L470 AbstractCegarLoop]: Abstraction has 29589 states and 43173 transitions. [2021-12-06 16:57:35,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 16:57:35,115 INFO L276 IsEmpty]: Start isEmpty. Operand 29589 states and 43173 transitions. [2021-12-06 16:57:35,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-06 16:57:35,116 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 16:57:35,116 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:57:35,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 16:57:35,116 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 16:57:35,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 16:57:35,117 INFO L85 PathProgramCache]: Analyzing trace with hash 171324818, now seen corresponding path program 1 times [2021-12-06 16:57:35,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 16:57:35,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900669798] [2021-12-06 16:57:35,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 16:57:35,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 16:57:35,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 16:57:35,162 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 16:57:35,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 16:57:35,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900669798] [2021-12-06 16:57:35,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900669798] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 16:57:35,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 16:57:35,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 16:57:35,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146134367] [2021-12-06 16:57:35,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 16:57:35,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 16:57:35,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 16:57:35,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 16:57:35,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 16:57:35,164 INFO L87 Difference]: Start difference. First operand 29589 states and 43173 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 16:57:37,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 16:57:37,388 INFO L93 Difference]: Finished difference Result 57244 states and 83627 transitions. [2021-12-06 16:57:37,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 16:57:37,388 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-12-06 16:57:37,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 16:57:37,422 INFO L225 Difference]: With dead ends: 57244 [2021-12-06 16:57:37,422 INFO L226 Difference]: Without dead ends: 42393 [2021-12-06 16:57:37,431 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 16:57:37,432 INFO L933 BasicCegarLoop]: 1731 mSDtfsCounter, 1549 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 1852 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 16:57:37,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1549 Valid, 1852 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 16:57:37,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42393 states. [2021-12-06 16:57:39,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42393 to 42391. [2021-12-06 16:57:39,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42391 states, 42389 states have (on average 1.4503526858383071) internal successors, (61479), 42390 states have internal predecessors, (61479), 0 states have call successors, (0), 0 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 16:57:39,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42391 states to 42391 states and 61479 transitions. [2021-12-06 16:57:39,665 INFO L78 Accepts]: Start accepts. Automaton has 42391 states and 61479 transitions. Word has length 110 [2021-12-06 16:57:39,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 16:57:39,665 INFO L470 AbstractCegarLoop]: Abstraction has 42391 states and 61479 transitions. [2021-12-06 16:57:39,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 16:57:39,666 INFO L276 IsEmpty]: Start isEmpty. Operand 42391 states and 61479 transitions. [2021-12-06 16:57:39,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-12-06 16:57:39,669 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 16:57:39,669 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, 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] [2021-12-06 16:57:39,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 16:57:39,670 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 16:57:39,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 16:57:39,670 INFO L85 PathProgramCache]: Analyzing trace with hash -720752691, now seen corresponding path program 1 times [2021-12-06 16:57:39,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 16:57:39,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838614106] [2021-12-06 16:57:39,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 16:57:39,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 16:57:39,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 16:57:39,734 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 16:57:39,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 16:57:39,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838614106] [2021-12-06 16:57:39,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838614106] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 16:57:39,734 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 16:57:39,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 16:57:39,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352364064] [2021-12-06 16:57:39,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 16:57:39,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 16:57:39,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 16:57:39,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 16:57:39,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 16:57:39,736 INFO L87 Difference]: Start difference. First operand 42391 states and 61479 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 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 16:57:44,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 16:57:44,835 INFO L93 Difference]: Finished difference Result 46185 states and 67842 transitions. [2021-12-06 16:57:44,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 16:57:44,835 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2021-12-06 16:57:44,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 16:57:44,872 INFO L225 Difference]: With dead ends: 46185 [2021-12-06 16:57:44,872 INFO L226 Difference]: Without dead ends: 43893 [2021-12-06 16:57:44,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 16:57:44,881 INFO L933 BasicCegarLoop]: 864 mSDtfsCounter, 879 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 3779 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 4443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 3779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-06 16:57:44,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [879 Valid, 1072 Invalid, 4443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 3779 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-06 16:57:44,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43893 states. [2021-12-06 16:57:47,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43893 to 43142. [2021-12-06 16:57:47,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43142 states, 43140 states have (on average 1.442559109874826) internal successors, (62232), 43141 states have internal predecessors, (62232), 0 states have call successors, (0), 0 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 16:57:47,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43142 states to 43142 states and 62232 transitions. [2021-12-06 16:57:47,363 INFO L78 Accepts]: Start accepts. Automaton has 43142 states and 62232 transitions. Word has length 138 [2021-12-06 16:57:47,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 16:57:47,363 INFO L470 AbstractCegarLoop]: Abstraction has 43142 states and 62232 transitions. [2021-12-06 16:57:47,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 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 16:57:47,363 INFO L276 IsEmpty]: Start isEmpty. Operand 43142 states and 62232 transitions. [2021-12-06 16:57:47,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-06 16:57:47,376 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 16:57:47,376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 16:57:47,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 16:57:47,376 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 16:57:47,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 16:57:47,376 INFO L85 PathProgramCache]: Analyzing trace with hash 635734382, now seen corresponding path program 1 times [2021-12-06 16:57:47,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 16:57:47,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160785847] [2021-12-06 16:57:47,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 16:57:47,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 16:57:47,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 16:57:47,462 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 16:57:47,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 16:57:47,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160785847] [2021-12-06 16:57:47,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160785847] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 16:57:47,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 16:57:47,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 16:57:47,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358009202] [2021-12-06 16:57:47,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 16:57:47,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 16:57:47,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 16:57:47,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 16:57:47,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 16:57:47,463 INFO L87 Difference]: Start difference. First operand 43142 states and 62232 transitions. Second operand has 10 states, 10 states have (on average 13.8) internal successors, (138), 10 states have internal predecessors, (138), 0 states have call successors, (0), 0 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 16:58:03,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 16:58:03,529 INFO L93 Difference]: Finished difference Result 371352 states and 535841 transitions. [2021-12-06 16:58:03,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 16:58:03,530 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.8) internal successors, (138), 10 states have internal predecessors, (138), 0 states have call successors, (0), 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 149 [2021-12-06 16:58:03,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 16:58:04,037 INFO L225 Difference]: With dead ends: 371352 [2021-12-06 16:58:04,038 INFO L226 Difference]: Without dead ends: 331286 [2021-12-06 16:58:04,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-12-06 16:58:04,102 INFO L933 BasicCegarLoop]: 1699 mSDtfsCounter, 13005 mSDsluCounter, 2663 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13005 SdHoareTripleChecker+Valid, 4362 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 16:58:04,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13005 Valid, 4362 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 16:58:04,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331286 states. [2021-12-06 16:58:10,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331286 to 83206. [2021-12-06 16:58:10,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83206 states, 83204 states have (on average 1.4386808326522764) internal successors, (119704), 83205 states have internal predecessors, (119704), 0 states have call successors, (0), 0 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 16:58:10,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83206 states to 83206 states and 119704 transitions. [2021-12-06 16:58:10,438 INFO L78 Accepts]: Start accepts. Automaton has 83206 states and 119704 transitions. Word has length 149 [2021-12-06 16:58:10,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 16:58:10,438 INFO L470 AbstractCegarLoop]: Abstraction has 83206 states and 119704 transitions. [2021-12-06 16:58:10,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.8) internal successors, (138), 10 states have internal predecessors, (138), 0 states have call successors, (0), 0 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 16:58:10,438 INFO L276 IsEmpty]: Start isEmpty. Operand 83206 states and 119704 transitions. [2021-12-06 16:58:10,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-06 16:58:10,450 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 16:58:10,450 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 16:58:10,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 16:58:10,450 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 16:58:10,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 16:58:10,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1133048434, now seen corresponding path program 1 times [2021-12-06 16:58:10,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 16:58:10,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221383134] [2021-12-06 16:58:10,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 16:58:10,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 16:58:10,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 16:58:10,537 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-06 16:58:10,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 16:58:10,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221383134] [2021-12-06 16:58:10,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221383134] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 16:58:10,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 16:58:10,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 16:58:10,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27180148] [2021-12-06 16:58:10,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 16:58:10,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 16:58:10,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 16:58:10,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 16:58:10,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 16:58:10,539 INFO L87 Difference]: Start difference. First operand 83206 states and 119704 transitions. Second operand has 10 states, 10 states have (on average 13.9) internal successors, (139), 10 states have internal predecessors, (139), 0 states have call successors, (0), 0 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 16:58:31,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 16:58:31,218 INFO L93 Difference]: Finished difference Result 411416 states and 593313 transitions. [2021-12-06 16:58:31,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 16:58:31,219 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.9) internal successors, (139), 10 states have internal predecessors, (139), 0 states have call successors, (0), 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 149 [2021-12-06 16:58:31,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 16:58:31,672 INFO L225 Difference]: With dead ends: 411416 [2021-12-06 16:58:31,672 INFO L226 Difference]: Without dead ends: 371350 [2021-12-06 16:58:31,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-12-06 16:58:31,744 INFO L933 BasicCegarLoop]: 1701 mSDtfsCounter, 12642 mSDsluCounter, 2778 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12642 SdHoareTripleChecker+Valid, 4479 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 16:58:31,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12642 Valid, 4479 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 16:58:32,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371350 states. [2021-12-06 16:58:42,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371350 to 143366. [2021-12-06 16:58:42,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143366 states, 143364 states have (on average 1.4340559694204962) internal successors, (205592), 143365 states have internal predecessors, (205592), 0 states have call successors, (0), 0 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 16:58:42,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143366 states to 143366 states and 205592 transitions. [2021-12-06 16:58:42,349 INFO L78 Accepts]: Start accepts. Automaton has 143366 states and 205592 transitions. Word has length 149 [2021-12-06 16:58:42,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 16:58:42,350 INFO L470 AbstractCegarLoop]: Abstraction has 143366 states and 205592 transitions. [2021-12-06 16:58:42,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.9) internal successors, (139), 10 states have internal predecessors, (139), 0 states have call successors, (0), 0 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 16:58:42,350 INFO L276 IsEmpty]: Start isEmpty. Operand 143366 states and 205592 transitions. [2021-12-06 16:58:42,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-06 16:58:42,365 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 16:58:42,365 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 16:58:42,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 16:58:42,365 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 16:58:42,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 16:58:42,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1408594, now seen corresponding path program 1 times [2021-12-06 16:58:42,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 16:58:42,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233563182] [2021-12-06 16:58:42,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 16:58:42,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 16:58:42,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 16:58:42,456 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-06 16:58:42,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 16:58:42,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233563182] [2021-12-06 16:58:42,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233563182] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 16:58:42,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 16:58:42,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 16:58:42,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832313662] [2021-12-06 16:58:42,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 16:58:42,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 16:58:42,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 16:58:42,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 16:58:42,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 16:58:42,458 INFO L87 Difference]: Start difference. First operand 143366 states and 205592 transitions. Second operand has 10 states, 10 states have (on average 14.0) internal successors, (140), 10 states have internal predecessors, (140), 0 states have call successors, (0), 0 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 16:59:07,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 16:59:07,673 INFO L93 Difference]: Finished difference Result 451480 states and 650785 transitions. [2021-12-06 16:59:07,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 16:59:07,674 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.0) internal successors, (140), 10 states have internal predecessors, (140), 0 states have call successors, (0), 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 149 [2021-12-06 16:59:07,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 16:59:08,239 INFO L225 Difference]: With dead ends: 451480 [2021-12-06 16:59:08,240 INFO L226 Difference]: Without dead ends: 411414 [2021-12-06 16:59:08,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-12-06 16:59:08,321 INFO L933 BasicCegarLoop]: 1701 mSDtfsCounter, 12482 mSDsluCounter, 2818 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12482 SdHoareTripleChecker+Valid, 4519 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 16:59:08,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12482 Valid, 4519 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 16:59:08,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411414 states. [2021-12-06 16:59:21,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411414 to 183430. [2021-12-06 16:59:22,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183430 states, 183428 states have (on average 1.4341540004797522) internal successors, (263064), 183429 states have internal predecessors, (263064), 0 states have call successors, (0), 0 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 16:59:22,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183430 states to 183430 states and 263064 transitions. [2021-12-06 16:59:22,314 INFO L78 Accepts]: Start accepts. Automaton has 183430 states and 263064 transitions. Word has length 149 [2021-12-06 16:59:22,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 16:59:22,314 INFO L470 AbstractCegarLoop]: Abstraction has 183430 states and 263064 transitions. [2021-12-06 16:59:22,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.0) internal successors, (140), 10 states have internal predecessors, (140), 0 states have call successors, (0), 0 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 16:59:22,315 INFO L276 IsEmpty]: Start isEmpty. Operand 183430 states and 263064 transitions. [2021-12-06 16:59:22,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-06 16:59:22,331 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 16:59:22,332 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 16:59:22,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 16:59:22,332 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 16:59:22,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 16:59:22,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1236867634, now seen corresponding path program 1 times [2021-12-06 16:59:22,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 16:59:22,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089351842] [2021-12-06 16:59:22,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 16:59:22,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 16:59:22,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 16:59:22,523 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 16:59:22,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 16:59:22,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089351842] [2021-12-06 16:59:22,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089351842] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 16:59:22,523 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 16:59:22,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 16:59:22,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195393246] [2021-12-06 16:59:22,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 16:59:22,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 16:59:22,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 16:59:22,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 16:59:22,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 16:59:22,524 INFO L87 Difference]: Start difference. First operand 183430 states and 263064 transitions. Second operand has 10 states, 10 states have (on average 14.1) internal successors, (141), 10 states have internal predecessors, (141), 0 states have call successors, (0), 0 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 16:59:53,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 16:59:53,757 INFO L93 Difference]: Finished difference Result 491544 states and 708257 transitions. [2021-12-06 16:59:53,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 16:59:53,758 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.1) internal successors, (141), 10 states have internal predecessors, (141), 0 states have call successors, (0), 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 149 [2021-12-06 16:59:53,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 16:59:54,380 INFO L225 Difference]: With dead ends: 491544 [2021-12-06 16:59:54,380 INFO L226 Difference]: Without dead ends: 451478 [2021-12-06 16:59:54,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-12-06 16:59:54,459 INFO L933 BasicCegarLoop]: 1701 mSDtfsCounter, 12468 mSDsluCounter, 2889 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12468 SdHoareTripleChecker+Valid, 4590 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 16:59:54,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12468 Valid, 4590 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 16:59:54,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451478 states. [2021-12-06 17:00:12,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451478 to 223494. [2021-12-06 17:00:12,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223494 states, 223492 states have (on average 1.434216884720706) internal successors, (320536), 223493 states have internal predecessors, (320536), 0 states have call successors, (0), 0 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 17:00:12,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223494 states to 223494 states and 320536 transitions. [2021-12-06 17:00:12,870 INFO L78 Accepts]: Start accepts. Automaton has 223494 states and 320536 transitions. Word has length 149 [2021-12-06 17:00:12,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:00:12,870 INFO L470 AbstractCegarLoop]: Abstraction has 223494 states and 320536 transitions. [2021-12-06 17:00:12,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.1) internal successors, (141), 10 states have internal predecessors, (141), 0 states have call successors, (0), 0 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 17:00:12,870 INFO L276 IsEmpty]: Start isEmpty. Operand 223494 states and 320536 transitions. [2021-12-06 17:00:12,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-06 17:00:12,890 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:00:12,890 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:00:12,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-06 17:00:12,891 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:00:12,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:00:12,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1637104110, now seen corresponding path program 1 times [2021-12-06 17:00:12,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:00:12,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797219277] [2021-12-06 17:00:12,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:00:12,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:00:12,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:00:12,973 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 17:00:12,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:00:12,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797219277] [2021-12-06 17:00:12,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797219277] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:00:12,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:00:12,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 17:00:12,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292026025] [2021-12-06 17:00:12,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:00:12,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 17:00:12,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:00:12,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 17:00:12,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 17:00:12,975 INFO L87 Difference]: Start difference. First operand 223494 states and 320536 transitions. Second operand has 10 states, 10 states have (on average 14.2) internal successors, (142), 10 states have internal predecessors, (142), 0 states have call successors, (0), 0 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 17:00:51,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:00:51,080 INFO L93 Difference]: Finished difference Result 531608 states and 765729 transitions. [2021-12-06 17:00:51,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 17:00:51,081 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.2) internal successors, (142), 10 states have internal predecessors, (142), 0 states have call successors, (0), 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 149 [2021-12-06 17:00:51,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:00:51,787 INFO L225 Difference]: With dead ends: 531608 [2021-12-06 17:00:51,788 INFO L226 Difference]: Without dead ends: 491542 [2021-12-06 17:00:51,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-12-06 17:00:51,877 INFO L933 BasicCegarLoop]: 1701 mSDtfsCounter, 12576 mSDsluCounter, 2908 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12576 SdHoareTripleChecker+Valid, 4609 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:00:51,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12576 Valid, 4609 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:00:52,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491542 states. [2021-12-06 17:01:14,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491542 to 263558. [2021-12-06 17:01:14,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263558 states, 263556 states have (on average 1.4342606504879418) internal successors, (378008), 263557 states have internal predecessors, (378008), 0 states have call successors, (0), 0 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 17:01:15,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263558 states to 263558 states and 378008 transitions. [2021-12-06 17:01:15,365 INFO L78 Accepts]: Start accepts. Automaton has 263558 states and 378008 transitions. Word has length 149 [2021-12-06 17:01:15,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:01:15,365 INFO L470 AbstractCegarLoop]: Abstraction has 263558 states and 378008 transitions. [2021-12-06 17:01:15,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.2) internal successors, (142), 10 states have internal predecessors, (142), 0 states have call successors, (0), 0 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 17:01:15,365 INFO L276 IsEmpty]: Start isEmpty. Operand 263558 states and 378008 transitions. [2021-12-06 17:01:15,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-06 17:01:15,381 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:01:15,381 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:01:15,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-06 17:01:15,381 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:01:15,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:01:15,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1071283726, now seen corresponding path program 1 times [2021-12-06 17:01:15,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:01:15,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269974825] [2021-12-06 17:01:15,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:01:15,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:01:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:01:15,464 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 17:01:15,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:01:15,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269974825] [2021-12-06 17:01:15,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269974825] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:01:15,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:01:15,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 17:01:15,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36597554] [2021-12-06 17:01:15,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:01:15,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 17:01:15,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:01:15,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 17:01:15,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 17:01:15,466 INFO L87 Difference]: Start difference. First operand 263558 states and 378008 transitions. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 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 17:02:01,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:02:01,145 INFO L93 Difference]: Finished difference Result 571672 states and 823201 transitions. [2021-12-06 17:02:01,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 17:02:01,146 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 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 149 [2021-12-06 17:02:01,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:02:01,933 INFO L225 Difference]: With dead ends: 571672 [2021-12-06 17:02:01,934 INFO L226 Difference]: Without dead ends: 531606 [2021-12-06 17:02:02,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-12-06 17:02:02,037 INFO L933 BasicCegarLoop]: 1701 mSDtfsCounter, 12766 mSDsluCounter, 2903 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12766 SdHoareTripleChecker+Valid, 4604 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:02:02,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12766 Valid, 4604 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:02:02,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531606 states. [2021-12-06 17:02:30,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531606 to 303622. [2021-12-06 17:02:30,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303622 states, 303620 states have (on average 1.4342928660826033) internal successors, (435480), 303621 states have internal predecessors, (435480), 0 states have call successors, (0), 0 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 17:02:31,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303622 states to 303622 states and 435480 transitions. [2021-12-06 17:02:31,145 INFO L78 Accepts]: Start accepts. Automaton has 303622 states and 435480 transitions. Word has length 149 [2021-12-06 17:02:31,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:02:31,145 INFO L470 AbstractCegarLoop]: Abstraction has 303622 states and 435480 transitions. [2021-12-06 17:02:31,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 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 17:02:31,145 INFO L276 IsEmpty]: Start isEmpty. Operand 303622 states and 435480 transitions. [2021-12-06 17:02:31,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-06 17:02:31,163 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:02:31,164 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:02:31,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-06 17:02:31,164 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:02:31,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:02:31,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1260499502, now seen corresponding path program 1 times [2021-12-06 17:02:31,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:02:31,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764399547] [2021-12-06 17:02:31,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:02:31,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:02:31,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:02:31,241 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 17:02:31,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:02:31,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764399547] [2021-12-06 17:02:31,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764399547] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:02:31,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:02:31,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 17:02:31,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937782158] [2021-12-06 17:02:31,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:02:31,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 17:02:31,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:02:31,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 17:02:31,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 17:02:31,243 INFO L87 Difference]: Start difference. First operand 303622 states and 435480 transitions. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 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 17:03:26,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:03:26,761 INFO L93 Difference]: Finished difference Result 611736 states and 880673 transitions. [2021-12-06 17:03:26,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 17:03:26,762 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 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 149 [2021-12-06 17:03:26,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:03:27,550 INFO L225 Difference]: With dead ends: 611736 [2021-12-06 17:03:27,550 INFO L226 Difference]: Without dead ends: 571670 [2021-12-06 17:03:27,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-12-06 17:03:27,662 INFO L933 BasicCegarLoop]: 1699 mSDtfsCounter, 12964 mSDsluCounter, 2768 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12964 SdHoareTripleChecker+Valid, 4467 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:03:27,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12964 Valid, 4467 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:03:28,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571670 states. [2021-12-06 17:04:01,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571670 to 343686. [2021-12-06 17:04:01,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343686 states, 343684 states have (on average 1.434317570791774) internal successors, (492952), 343685 states have internal predecessors, (492952), 0 states have call successors, (0), 0 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 17:04:02,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343686 states to 343686 states and 492952 transitions. [2021-12-06 17:04:02,732 INFO L78 Accepts]: Start accepts. Automaton has 343686 states and 492952 transitions. Word has length 149 [2021-12-06 17:04:02,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:04:02,732 INFO L470 AbstractCegarLoop]: Abstraction has 343686 states and 492952 transitions. [2021-12-06 17:04:02,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 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 17:04:02,733 INFO L276 IsEmpty]: Start isEmpty. Operand 343686 states and 492952 transitions. [2021-12-06 17:04:02,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-06 17:04:02,767 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:04:02,767 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:04:02,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-06 17:04:02,767 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:04:02,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:04:02,767 INFO L85 PathProgramCache]: Analyzing trace with hash -293807930, now seen corresponding path program 1 times [2021-12-06 17:04:02,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:04:02,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379283173] [2021-12-06 17:04:02,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:04:02,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:04:02,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:04:02,807 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 17:04:02,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:04:02,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379283173] [2021-12-06 17:04:02,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379283173] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:04:02,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:04:02,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:04:02,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834105916] [2021-12-06 17:04:02,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:04:02,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:04:02,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:04:02,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:04:02,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:04:02,808 INFO L87 Difference]: Start difference. First operand 343686 states and 492952 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 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 17:04:25,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:04:25,372 INFO L93 Difference]: Finished difference Result 578740 states and 832460 transitions. [2021-12-06 17:04:25,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:04:25,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 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 151 [2021-12-06 17:04:25,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:04:25,671 INFO L225 Difference]: With dead ends: 578740 [2021-12-06 17:04:25,671 INFO L226 Difference]: Without dead ends: 238130 [2021-12-06 17:04:25,806 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 17:04:25,807 INFO L933 BasicCegarLoop]: 1651 mSDtfsCounter, 80 mSDsluCounter, 1571 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 3222 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 17:04:25,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 3222 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:04:26,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238130 states. [2021-12-06 17:04:48,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238130 to 238128. [2021-12-06 17:04:48,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238128 states, 238126 states have (on average 1.4349756011523311) internal successors, (341705), 238127 states have internal predecessors, (341705), 0 states have call successors, (0), 0 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 17:04:49,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238128 states to 238128 states and 341705 transitions. [2021-12-06 17:04:49,271 INFO L78 Accepts]: Start accepts. Automaton has 238128 states and 341705 transitions. Word has length 151 [2021-12-06 17:04:49,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:04:49,271 INFO L470 AbstractCegarLoop]: Abstraction has 238128 states and 341705 transitions. [2021-12-06 17:04:49,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 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 17:04:49,272 INFO L276 IsEmpty]: Start isEmpty. Operand 238128 states and 341705 transitions. [2021-12-06 17:04:49,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-06 17:04:49,287 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:04:49,287 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:04:49,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-06 17:04:49,288 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:04:49,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:04:49,288 INFO L85 PathProgramCache]: Analyzing trace with hash -73323949, now seen corresponding path program 1 times [2021-12-06 17:04:49,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:04:49,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163923213] [2021-12-06 17:04:49,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:04:49,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:04:49,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:04:49,363 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 17:04:49,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:04:49,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163923213] [2021-12-06 17:04:49,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163923213] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:04:49,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:04:49,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 17:04:49,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31053316] [2021-12-06 17:04:49,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:04:49,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 17:04:49,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:04:49,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 17:04:49,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 17:04:49,365 INFO L87 Difference]: Start difference. First operand 238128 states and 341705 transitions. Second operand has 10 states, 10 states have (on average 15.0) internal successors, (150), 10 states have internal predecessors, (150), 0 states have call successors, (0), 0 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 17:05:36,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:05:36,537 INFO L93 Difference]: Finished difference Result 459330 states and 661202 transitions. [2021-12-06 17:05:36,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 17:05:36,538 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.0) internal successors, (150), 10 states have internal predecessors, (150), 0 states have call successors, (0), 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 151 [2021-12-06 17:05:36,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:05:37,120 INFO L225 Difference]: With dead ends: 459330 [2021-12-06 17:05:37,120 INFO L226 Difference]: Without dead ends: 431680 [2021-12-06 17:05:37,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-12-06 17:05:37,201 INFO L933 BasicCegarLoop]: 1698 mSDtfsCounter, 12916 mSDsluCounter, 2721 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12916 SdHoareTripleChecker+Valid, 4419 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:05:37,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12916 Valid, 4419 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:05:37,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431680 states. [2021-12-06 17:06:06,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431680 to 265776. [2021-12-06 17:06:06,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265776 states, 265774 states have (on average 1.4349974038092514) internal successors, (381385), 265775 states have internal predecessors, (381385), 0 states have call successors, (0), 0 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 17:06:07,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265776 states to 265776 states and 381385 transitions. [2021-12-06 17:06:07,088 INFO L78 Accepts]: Start accepts. Automaton has 265776 states and 381385 transitions. Word has length 151 [2021-12-06 17:06:07,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:06:07,089 INFO L470 AbstractCegarLoop]: Abstraction has 265776 states and 381385 transitions. [2021-12-06 17:06:07,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.0) internal successors, (150), 10 states have internal predecessors, (150), 0 states have call successors, (0), 0 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 17:06:07,089 INFO L276 IsEmpty]: Start isEmpty. Operand 265776 states and 381385 transitions. [2021-12-06 17:06:07,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-06 17:06:07,105 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:06:07,105 INFO L514 BasicCegarLoop]: trace histogram [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, 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 17:06:07,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-06 17:06:07,105 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:06:07,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:06:07,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1985451320, now seen corresponding path program 1 times [2021-12-06 17:06:07,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:06:07,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57153084] [2021-12-06 17:06:07,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:06:07,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:06:07,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:07,291 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:06:07,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:06:07,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57153084] [2021-12-06 17:06:07,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57153084] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:06:07,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300799184] [2021-12-06 17:06:07,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:06:07,291 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:06:07,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22afb963-8d88-4ea0-8b21-29d76af890be/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:06:07,292 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22afb963-8d88-4ea0-8b21-29d76af890be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:06:07,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22afb963-8d88-4ea0-8b21-29d76af890be/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 17:06:07,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:07,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 680 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 17:06:07,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:06:07,838 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 17:06:07,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:06:08,079 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 17:06:08,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300799184] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:06:08,079 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 17:06:08,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4, 4] total 18 [2021-12-06 17:06:08,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837255229] [2021-12-06 17:06:08,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 17:06:08,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-06 17:06:08,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:06:08,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-06 17:06:08,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-12-06 17:06:08,082 INFO L87 Difference]: Start difference. First operand 265776 states and 381385 transitions. Second operand has 18 states, 18 states have (on average 24.38888888888889) internal successors, (439), 18 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)