./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+cfa-reducer.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_b8023642-b125-460c-a121-2ca994cff41f/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8023642-b125-460c-a121-2ca994cff41f/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_b8023642-b125-460c-a121-2ca994cff41f/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8023642-b125-460c-a121-2ca994cff41f/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8023642-b125-460c-a121-2ca994cff41f/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_b8023642-b125-460c-a121-2ca994cff41f/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 48c664e7cdd48f925f0c21709ed46b226b726e91974047076ebfec19f49c351c --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 18:19:23,390 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 18:19:23,392 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 18:19:23,424 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 18:19:23,424 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 18:19:23,426 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 18:19:23,427 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 18:19:23,430 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 18:19:23,432 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 18:19:23,432 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 18:19:23,433 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 18:19:23,434 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 18:19:23,435 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 18:19:23,435 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 18:19:23,437 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 18:19:23,438 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 18:19:23,439 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 18:19:23,440 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 18:19:23,441 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 18:19:23,443 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 18:19:23,445 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 18:19:23,446 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 18:19:23,447 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 18:19:23,448 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 18:19:23,451 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 18:19:23,451 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 18:19:23,451 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 18:19:23,452 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 18:19:23,452 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 18:19:23,453 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 18:19:23,454 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 18:19:23,454 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 18:19:23,455 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 18:19:23,456 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 18:19:23,456 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 18:19:23,457 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 18:19:23,457 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 18:19:23,457 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 18:19:23,457 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 18:19:23,458 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 18:19:23,458 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 18:19:23,459 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8023642-b125-460c-a121-2ca994cff41f/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 18:19:23,476 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 18:19:23,476 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 18:19:23,477 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 18:19:23,477 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 18:19:23,477 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 18:19:23,478 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 18:19:23,478 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 18:19:23,478 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 18:19:23,478 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 18:19:23,478 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 18:19:23,479 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 18:19:23,479 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 18:19:23,479 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 18:19:23,479 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 18:19:23,479 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 18:19:23,479 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 18:19:23,479 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 18:19:23,479 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 18:19:23,479 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 18:19:23,480 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 18:19:23,480 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 18:19:23,480 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 18:19:23,480 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 18:19:23,480 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 18:19:23,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:19:23,480 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 18:19:23,481 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 18:19:23,481 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 18:19:23,481 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 18:19:23,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 18:19:23,481 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 18:19:23,481 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 18:19:23,481 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 18:19:23,481 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 18:19:23,482 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_b8023642-b125-460c-a121-2ca994cff41f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8023642-b125-460c-a121-2ca994cff41f/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 48c664e7cdd48f925f0c21709ed46b226b726e91974047076ebfec19f49c351c [2021-12-06 18:19:23,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 18:19:23,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 18:19:23,688 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 18:19:23,689 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 18:19:23,689 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 18:19:23,690 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8023642-b125-460c-a121-2ca994cff41f/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+cfa-reducer.c [2021-12-06 18:19:23,735 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8023642-b125-460c-a121-2ca994cff41f/bin/uautomizer-DrprNOufMa/data/491c1416d/319939b42935433ea8a3d9b1f3ddad4a/FLAG7ea94e97f [2021-12-06 18:19:24,115 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 18:19:24,115 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8023642-b125-460c-a121-2ca994cff41f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+cfa-reducer.c [2021-12-06 18:19:24,123 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8023642-b125-460c-a121-2ca994cff41f/bin/uautomizer-DrprNOufMa/data/491c1416d/319939b42935433ea8a3d9b1f3ddad4a/FLAG7ea94e97f [2021-12-06 18:19:24,137 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8023642-b125-460c-a121-2ca994cff41f/bin/uautomizer-DrprNOufMa/data/491c1416d/319939b42935433ea8a3d9b1f3ddad4a [2021-12-06 18:19:24,139 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 18:19:24,140 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 18:19:24,141 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 18:19:24,141 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 18:19:24,143 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 18:19:24,144 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:19:24" (1/1) ... [2021-12-06 18:19:24,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c7f3ec0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:19:24, skipping insertion in model container [2021-12-06 18:19:24,145 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:19:24" (1/1) ... [2021-12-06 18:19:24,150 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 18:19:24,183 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:19:24,355 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_b8023642-b125-460c-a121-2ca994cff41f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+cfa-reducer.c[8604,8617] [2021-12-06 18:19:24,385 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:19:24,396 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 18:19:24,437 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_b8023642-b125-460c-a121-2ca994cff41f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+cfa-reducer.c[8604,8617] [2021-12-06 18:19:24,456 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:19:24,470 INFO L208 MainTranslator]: Completed translation [2021-12-06 18:19:24,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:19:24 WrapperNode [2021-12-06 18:19:24,471 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 18:19:24,472 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 18:19:24,472 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 18:19:24,472 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 18:19:24,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:19:24" (1/1) ... [2021-12-06 18:19:24,486 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:19:24" (1/1) ... [2021-12-06 18:19:24,515 INFO L137 Inliner]: procedures = 27, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 661 [2021-12-06 18:19:24,516 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 18:19:24,516 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 18:19:24,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 18:19:24,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 18:19:24,522 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:19:24" (1/1) ... [2021-12-06 18:19:24,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:19:24" (1/1) ... [2021-12-06 18:19:24,526 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:19:24" (1/1) ... [2021-12-06 18:19:24,526 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:19:24" (1/1) ... [2021-12-06 18:19:24,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:19:24" (1/1) ... [2021-12-06 18:19:24,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:19:24" (1/1) ... [2021-12-06 18:19:24,542 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:19:24" (1/1) ... [2021-12-06 18:19:24,546 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 18:19:24,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 18:19:24,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 18:19:24,547 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 18:19:24,547 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:19:24" (1/1) ... [2021-12-06 18:19:24,555 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:19:24,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8023642-b125-460c-a121-2ca994cff41f/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:19:24,576 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8023642-b125-460c-a121-2ca994cff41f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 18:19:24,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8023642-b125-460c-a121-2ca994cff41f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 18:19:24,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 18:19:24,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 18:19:24,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 18:19:24,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 18:19:24,684 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 18:19:24,685 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 18:19:25,042 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 18:19:25,048 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 18:19:25,049 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 18:19:25,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:19:25 BoogieIcfgContainer [2021-12-06 18:19:25,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 18:19:25,052 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 18:19:25,052 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 18:19:25,054 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 18:19:25,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:19:24" (1/3) ... [2021-12-06 18:19:25,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7219b923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:19:25, skipping insertion in model container [2021-12-06 18:19:25,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:19:24" (2/3) ... [2021-12-06 18:19:25,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7219b923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:19:25, skipping insertion in model container [2021-12-06 18:19:25,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:19:25" (3/3) ... [2021-12-06 18:19:25,057 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+cfa-reducer.c [2021-12-06 18:19:25,061 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 18:19:25,061 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 18:19:25,097 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 18:19:25,103 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 18:19:25,103 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 18:19:25,120 INFO L276 IsEmpty]: Start isEmpty. Operand has 157 states, 155 states have (on average 1.761290322580645) internal successors, (273), 156 states have internal predecessors, (273), 0 states have call successors, (0), 0 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 18:19:25,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-06 18:19:25,132 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:19:25,132 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] [2021-12-06 18:19:25,133 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:19:25,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:19:25,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1231322286, now seen corresponding path program 1 times [2021-12-06 18:19:25,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:19:25,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635030501] [2021-12-06 18:19:25,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:19:25,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:19:25,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:19:25,480 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 18:19:25,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:19:25,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635030501] [2021-12-06 18:19:25,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635030501] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:19:25,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:19:25,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:19:25,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158124351] [2021-12-06 18:19:25,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:19:25,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:19:25,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:19:25,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:19:25,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:19:25,514 INFO L87 Difference]: Start difference. First operand has 157 states, 155 states have (on average 1.761290322580645) internal successors, (273), 156 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 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 18:19:25,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:19:25,584 INFO L93 Difference]: Finished difference Result 335 states and 554 transitions. [2021-12-06 18:19:25,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:19:25,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2021-12-06 18:19:25,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:19:25,597 INFO L225 Difference]: With dead ends: 335 [2021-12-06 18:19:25,597 INFO L226 Difference]: Without dead ends: 236 [2021-12-06 18:19:25,599 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 18:19:25,603 INFO L933 BasicCegarLoop]: 400 mSDtfsCounter, 193 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:19:25,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 545 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:19:25,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-12-06 18:19:25,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 234. [2021-12-06 18:19:25,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.4377682403433476) internal successors, (335), 233 states have internal predecessors, (335), 0 states have call successors, (0), 0 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 18:19:25,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 335 transitions. [2021-12-06 18:19:25,650 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 335 transitions. Word has length 101 [2021-12-06 18:19:25,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:19:25,651 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 335 transitions. [2021-12-06 18:19:25,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 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 18:19:25,651 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 335 transitions. [2021-12-06 18:19:25,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-06 18:19:25,654 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:19:25,654 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] [2021-12-06 18:19:25,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 18:19:25,655 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:19:25,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:19:25,656 INFO L85 PathProgramCache]: Analyzing trace with hash -854475245, now seen corresponding path program 1 times [2021-12-06 18:19:25,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:19:25,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635093663] [2021-12-06 18:19:25,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:19:25,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:19:25,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:19:25,763 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 18:19:25,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:19:25,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635093663] [2021-12-06 18:19:25,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635093663] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:19:25,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:19:25,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:19:25,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142063391] [2021-12-06 18:19:25,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:19:25,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:19:25,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:19:25,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:19:25,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:19:25,766 INFO L87 Difference]: Start difference. First operand 234 states and 335 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 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 18:19:25,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:19:25,800 INFO L93 Difference]: Finished difference Result 558 states and 851 transitions. [2021-12-06 18:19:25,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:19:25,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2021-12-06 18:19:25,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:19:25,804 INFO L225 Difference]: With dead ends: 558 [2021-12-06 18:19:25,804 INFO L226 Difference]: Without dead ends: 388 [2021-12-06 18:19:25,805 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 18:19:25,806 INFO L933 BasicCegarLoop]: 325 mSDtfsCounter, 128 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 467 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 18:19:25,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 467 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:19:25,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2021-12-06 18:19:25,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 386. [2021-12-06 18:19:25,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 1.4987012987012986) internal successors, (577), 385 states have internal predecessors, (577), 0 states have call successors, (0), 0 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 18:19:25,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 577 transitions. [2021-12-06 18:19:25,834 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 577 transitions. Word has length 102 [2021-12-06 18:19:25,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:19:25,834 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 577 transitions. [2021-12-06 18:19:25,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 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 18:19:25,834 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 577 transitions. [2021-12-06 18:19:25,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-06 18:19:25,836 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:19:25,836 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] [2021-12-06 18:19:25,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 18:19:25,836 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:19:25,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:19:25,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1444057759, now seen corresponding path program 1 times [2021-12-06 18:19:25,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:19:25,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565642403] [2021-12-06 18:19:25,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:19:25,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:19:25,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:19:25,905 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 18:19:25,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:19:25,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565642403] [2021-12-06 18:19:25,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565642403] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:19:25,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:19:25,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:19:25,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407308508] [2021-12-06 18:19:25,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:19:25,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:19:25,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:19:25,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:19:25,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:19:25,908 INFO L87 Difference]: Start difference. First operand 386 states and 577 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 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 18:19:25,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:19:25,955 INFO L93 Difference]: Finished difference Result 998 states and 1551 transitions. [2021-12-06 18:19:25,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:19:25,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2021-12-06 18:19:25,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:19:25,960 INFO L225 Difference]: With dead ends: 998 [2021-12-06 18:19:25,960 INFO L226 Difference]: Without dead ends: 676 [2021-12-06 18:19:25,962 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 18:19:25,963 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 123 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 463 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 18:19:25,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 463 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:19:25,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2021-12-06 18:19:25,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 674. [2021-12-06 18:19:25,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 673 states have (on average 1.534918276374443) internal successors, (1033), 673 states have internal predecessors, (1033), 0 states have call successors, (0), 0 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 18:19:25,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 1033 transitions. [2021-12-06 18:19:25,996 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 1033 transitions. Word has length 103 [2021-12-06 18:19:25,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:19:25,997 INFO L470 AbstractCegarLoop]: Abstraction has 674 states and 1033 transitions. [2021-12-06 18:19:25,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 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 18:19:25,997 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 1033 transitions. [2021-12-06 18:19:25,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-06 18:19:25,998 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:19:25,998 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] [2021-12-06 18:19:25,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 18:19:25,999 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:19:25,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:19:25,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1302443314, now seen corresponding path program 1 times [2021-12-06 18:19:26,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:19:26,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760651101] [2021-12-06 18:19:26,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:19:26,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:19:26,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:19:26,053 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 18:19:26,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:19:26,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760651101] [2021-12-06 18:19:26,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760651101] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:19:26,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:19:26,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:19:26,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839131984] [2021-12-06 18:19:26,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:19:26,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:19:26,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:19:26,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:19:26,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:19:26,055 INFO L87 Difference]: Start difference. First operand 674 states and 1033 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 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 18:19:26,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:19:26,100 INFO L93 Difference]: Finished difference Result 1830 states and 2867 transitions. [2021-12-06 18:19:26,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:19:26,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2021-12-06 18:19:26,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:19:26,107 INFO L225 Difference]: With dead ends: 1830 [2021-12-06 18:19:26,107 INFO L226 Difference]: Without dead ends: 1220 [2021-12-06 18:19:26,108 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 18:19:26,109 INFO L933 BasicCegarLoop]: 309 mSDtfsCounter, 118 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 459 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 18:19:26,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 459 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:19:26,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2021-12-06 18:19:26,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 1218. [2021-12-06 18:19:26,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1218 states, 1217 states have (on average 1.552177485620378) internal successors, (1889), 1217 states have internal predecessors, (1889), 0 states have call successors, (0), 0 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 18:19:26,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 1889 transitions. [2021-12-06 18:19:26,170 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 1889 transitions. Word has length 104 [2021-12-06 18:19:26,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:19:26,170 INFO L470 AbstractCegarLoop]: Abstraction has 1218 states and 1889 transitions. [2021-12-06 18:19:26,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 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 18:19:26,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 1889 transitions. [2021-12-06 18:19:26,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-06 18:19:26,172 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:19:26,172 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] [2021-12-06 18:19:26,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 18:19:26,173 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:19:26,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:19:26,173 INFO L85 PathProgramCache]: Analyzing trace with hash 342678280, now seen corresponding path program 1 times [2021-12-06 18:19:26,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:19:26,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116281232] [2021-12-06 18:19:26,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:19:26,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:19:26,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:19:26,226 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 18:19:26,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:19:26,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116281232] [2021-12-06 18:19:26,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116281232] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:19:26,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:19:26,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:19:26,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283325851] [2021-12-06 18:19:26,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:19:26,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:19:26,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:19:26,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:19:26,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:19:26,228 INFO L87 Difference]: Start difference. First operand 1218 states and 1889 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 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 18:19:26,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:19:26,302 INFO L93 Difference]: Finished difference Result 3398 states and 5331 transitions. [2021-12-06 18:19:26,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:19:26,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2021-12-06 18:19:26,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:19:26,312 INFO L225 Difference]: With dead ends: 3398 [2021-12-06 18:19:26,312 INFO L226 Difference]: Without dead ends: 2244 [2021-12-06 18:19:26,314 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 18:19:26,315 INFO L933 BasicCegarLoop]: 301 mSDtfsCounter, 113 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 455 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 18:19:26,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 455 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:19:26,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2244 states. [2021-12-06 18:19:26,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2244 to 2242. [2021-12-06 18:19:26,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2242 states, 2241 states have (on average 1.5568942436412316) internal successors, (3489), 2241 states have internal predecessors, (3489), 0 states have call successors, (0), 0 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 18:19:26,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2242 states to 2242 states and 3489 transitions. [2021-12-06 18:19:26,405 INFO L78 Accepts]: Start accepts. Automaton has 2242 states and 3489 transitions. Word has length 105 [2021-12-06 18:19:26,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:19:26,405 INFO L470 AbstractCegarLoop]: Abstraction has 2242 states and 3489 transitions. [2021-12-06 18:19:26,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 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 18:19:26,405 INFO L276 IsEmpty]: Start isEmpty. Operand 2242 states and 3489 transitions. [2021-12-06 18:19:26,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-06 18:19:26,406 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:19:26,406 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 18:19:26,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 18:19:26,407 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:19:26,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:19:26,407 INFO L85 PathProgramCache]: Analyzing trace with hash 504937094, now seen corresponding path program 1 times [2021-12-06 18:19:26,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:19:26,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278323941] [2021-12-06 18:19:26,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:19:26,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:19:26,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:19:26,455 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 18:19:26,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:19:26,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278323941] [2021-12-06 18:19:26,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278323941] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:19:26,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:19:26,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:19:26,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182619153] [2021-12-06 18:19:26,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:19:26,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:19:26,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:19:26,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:19:26,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:19:26,457 INFO L87 Difference]: Start difference. First operand 2242 states and 3489 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 18:19:26,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:19:26,614 INFO L93 Difference]: Finished difference Result 6342 states and 9923 transitions. [2021-12-06 18:19:26,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:19:26,615 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 18:19:26,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:19:26,633 INFO L225 Difference]: With dead ends: 6342 [2021-12-06 18:19:26,633 INFO L226 Difference]: Without dead ends: 4164 [2021-12-06 18:19:26,636 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 18:19:26,637 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 108 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 451 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 18:19:26,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 451 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:19:26,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4164 states. [2021-12-06 18:19:26,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4164 to 4162. [2021-12-06 18:19:26,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4162 states, 4161 states have (on average 1.5537130497476568) internal successors, (6465), 4161 states have internal predecessors, (6465), 0 states have call successors, (0), 0 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 18:19:26,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4162 states to 4162 states and 6465 transitions. [2021-12-06 18:19:26,826 INFO L78 Accepts]: Start accepts. Automaton has 4162 states and 6465 transitions. Word has length 106 [2021-12-06 18:19:26,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:19:26,826 INFO L470 AbstractCegarLoop]: Abstraction has 4162 states and 6465 transitions. [2021-12-06 18:19:26,826 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 18:19:26,826 INFO L276 IsEmpty]: Start isEmpty. Operand 4162 states and 6465 transitions. [2021-12-06 18:19:26,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-06 18:19:26,827 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:19:26,827 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:19:26,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 18:19:26,827 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:19:26,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:19:26,828 INFO L85 PathProgramCache]: Analyzing trace with hash -37721726, now seen corresponding path program 1 times [2021-12-06 18:19:26,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:19:26,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141414777] [2021-12-06 18:19:26,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:19:26,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:19:26,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:19:26,894 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 18:19:26,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:19:26,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141414777] [2021-12-06 18:19:26,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141414777] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:19:26,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:19:26,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:19:26,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978328817] [2021-12-06 18:19:26,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:19:26,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:19:26,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:19:26,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:19:26,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:19:26,896 INFO L87 Difference]: Start difference. First operand 4162 states and 6465 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:19:27,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:19:27,153 INFO L93 Difference]: Finished difference Result 11846 states and 18435 transitions. [2021-12-06 18:19:27,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:19:27,154 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-12-06 18:19:27,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:19:27,187 INFO L225 Difference]: With dead ends: 11846 [2021-12-06 18:19:27,187 INFO L226 Difference]: Without dead ends: 7748 [2021-12-06 18:19:27,192 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 18:19:27,193 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 103 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 447 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 18:19:27,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 447 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:19:27,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7748 states. [2021-12-06 18:19:27,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7748 to 7746. [2021-12-06 18:19:27,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7746 states, 7745 states have (on average 1.5453841187863138) internal successors, (11969), 7745 states have internal predecessors, (11969), 0 states have call successors, (0), 0 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 18:19:27,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7746 states to 7746 states and 11969 transitions. [2021-12-06 18:19:27,533 INFO L78 Accepts]: Start accepts. Automaton has 7746 states and 11969 transitions. Word has length 107 [2021-12-06 18:19:27,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:19:27,533 INFO L470 AbstractCegarLoop]: Abstraction has 7746 states and 11969 transitions. [2021-12-06 18:19:27,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:19:27,534 INFO L276 IsEmpty]: Start isEmpty. Operand 7746 states and 11969 transitions. [2021-12-06 18:19:27,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-06 18:19:27,534 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:19:27,534 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 18:19:27,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 18:19:27,535 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:19:27,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:19:27,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1757696618, now seen corresponding path program 1 times [2021-12-06 18:19:27,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:19:27,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251991466] [2021-12-06 18:19:27,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:19:27,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:19:27,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:19:27,598 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 18:19:27,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:19:27,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251991466] [2021-12-06 18:19:27,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251991466] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:19:27,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:19:27,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:19:27,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279021607] [2021-12-06 18:19:27,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:19:27,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:19:27,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:19:27,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:19:27,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:19:27,600 INFO L87 Difference]: Start difference. First operand 7746 states and 11969 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 18:19:28,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:19:28,078 INFO L93 Difference]: Finished difference Result 22086 states and 34115 transitions. [2021-12-06 18:19:28,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:19:28,078 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 18:19:28,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:19:28,140 INFO L225 Difference]: With dead ends: 22086 [2021-12-06 18:19:28,140 INFO L226 Difference]: Without dead ends: 14404 [2021-12-06 18:19:28,149 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 18:19:28,150 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 98 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 443 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 18:19:28,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 443 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:19:28,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14404 states. [2021-12-06 18:19:28,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14404 to 14402. [2021-12-06 18:19:28,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14402 states, 14401 states have (on average 1.5332962988681342) internal successors, (22081), 14401 states have internal predecessors, (22081), 0 states have call successors, (0), 0 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 18:19:28,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14402 states to 14402 states and 22081 transitions. [2021-12-06 18:19:28,671 INFO L78 Accepts]: Start accepts. Automaton has 14402 states and 22081 transitions. Word has length 108 [2021-12-06 18:19:28,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:19:28,671 INFO L470 AbstractCegarLoop]: Abstraction has 14402 states and 22081 transitions. [2021-12-06 18:19:28,672 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 18:19:28,672 INFO L276 IsEmpty]: Start isEmpty. Operand 14402 states and 22081 transitions. [2021-12-06 18:19:28,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-06 18:19:28,672 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:19:28,673 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 18:19:28,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 18:19:28,673 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:19:28,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:19:28,673 INFO L85 PathProgramCache]: Analyzing trace with hash -42081324, now seen corresponding path program 1 times [2021-12-06 18:19:28,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:19:28,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808872412] [2021-12-06 18:19:28,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:19:28,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:19:28,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:19:28,777 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 18:19:28,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:19:28,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808872412] [2021-12-06 18:19:28,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808872412] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:19:28,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:19:28,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 18:19:28,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044206800] [2021-12-06 18:19:28,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:19:28,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 18:19:28,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:19:28,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 18:19:28,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 18:19:28,780 INFO L87 Difference]: Start difference. First operand 14402 states and 22081 transitions. Second operand has 10 states, 10 states have (on average 10.9) internal successors, (109), 10 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 18:19:35,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:19:35,898 INFO L93 Difference]: Finished difference Result 243810 states and 374353 transitions. [2021-12-06 18:19:35,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 18:19:35,899 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 10 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 18:19:35,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:19:36,364 INFO L225 Difference]: With dead ends: 243810 [2021-12-06 18:19:36,364 INFO L226 Difference]: Without dead ends: 229472 [2021-12-06 18:19:36,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2021-12-06 18:19:36,437 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 2802 mSDsluCounter, 5143 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2802 SdHoareTripleChecker+Valid, 5344 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:19:36,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2802 Valid, 5344 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 18:19:36,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229472 states. [2021-12-06 18:19:39,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229472 to 28738. [2021-12-06 18:19:39,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28738 states, 28737 states have (on average 1.516685805755646) internal successors, (43585), 28737 states have internal predecessors, (43585), 0 states have call successors, (0), 0 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 18:19:39,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28738 states to 28738 states and 43585 transitions. [2021-12-06 18:19:39,613 INFO L78 Accepts]: Start accepts. Automaton has 28738 states and 43585 transitions. Word has length 109 [2021-12-06 18:19:39,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:19:39,614 INFO L470 AbstractCegarLoop]: Abstraction has 28738 states and 43585 transitions. [2021-12-06 18:19:39,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 10 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 18:19:39,614 INFO L276 IsEmpty]: Start isEmpty. Operand 28738 states and 43585 transitions. [2021-12-06 18:19:39,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-06 18:19:39,615 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:19:39,615 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:19:39,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 18:19:39,615 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:19:39,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:19:39,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1608706447, now seen corresponding path program 1 times [2021-12-06 18:19:39,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:19:39,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397305289] [2021-12-06 18:19:39,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:19:39,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:19:39,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:19:39,857 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 18:19:39,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:19:39,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397305289] [2021-12-06 18:19:39,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397305289] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:19:39,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:19:39,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 18:19:39,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405992918] [2021-12-06 18:19:39,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:19:39,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 18:19:39,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:19:39,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 18:19:39,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-12-06 18:19:39,859 INFO L87 Difference]: Start difference. First operand 28738 states and 43585 transitions. Second operand has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:19:41,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:19:41,780 INFO L93 Difference]: Finished difference Result 57414 states and 87107 transitions. [2021-12-06 18:19:41,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 18:19:41,780 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2021-12-06 18:19:41,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:19:41,816 INFO L225 Difference]: With dead ends: 57414 [2021-12-06 18:19:41,816 INFO L226 Difference]: Without dead ends: 28740 [2021-12-06 18:19:41,844 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 18:19:41,845 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 787 mSDsluCounter, 983 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:19:41,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [787 Valid, 1180 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:19:41,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28740 states. [2021-12-06 18:19:43,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28740 to 28738. [2021-12-06 18:19:43,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28738 states, 28737 states have (on average 1.5077774297943418) internal successors, (43329), 28737 states have internal predecessors, (43329), 0 states have call successors, (0), 0 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 18:19:43,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28738 states to 28738 states and 43329 transitions. [2021-12-06 18:19:43,611 INFO L78 Accepts]: Start accepts. Automaton has 28738 states and 43329 transitions. Word has length 111 [2021-12-06 18:19:43,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:19:43,612 INFO L470 AbstractCegarLoop]: Abstraction has 28738 states and 43329 transitions. [2021-12-06 18:19:43,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:19:43,612 INFO L276 IsEmpty]: Start isEmpty. Operand 28738 states and 43329 transitions. [2021-12-06 18:19:43,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-06 18:19:43,612 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:19:43,613 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:19:43,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 18:19:43,613 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:19:43,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:19:43,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1587703792, now seen corresponding path program 1 times [2021-12-06 18:19:43,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:19:43,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075151026] [2021-12-06 18:19:43,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:19:43,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:19:43,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:19:43,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:19:43,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:19:43,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075151026] [2021-12-06 18:19:43,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075151026] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:19:43,711 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:19:43,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:19:43,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671612094] [2021-12-06 18:19:43,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:19:43,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:19:43,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:19:43,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:19:43,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:19:43,712 INFO L87 Difference]: Start difference. First operand 28738 states and 43329 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:19:46,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:19:46,689 INFO L93 Difference]: Finished difference Result 71368 states and 107589 transitions. [2021-12-06 18:19:46,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:19:46,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2021-12-06 18:19:46,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:19:46,746 INFO L225 Difference]: With dead ends: 71368 [2021-12-06 18:19:46,746 INFO L226 Difference]: Without dead ends: 42694 [2021-12-06 18:19:46,778 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 18:19:46,779 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 89 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:19:46,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 400 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:19:46,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42694 states. [2021-12-06 18:19:49,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42694 to 42692. [2021-12-06 18:19:49,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42692 states, 42691 states have (on average 1.497716146260336) internal successors, (63939), 42691 states have internal predecessors, (63939), 0 states have call successors, (0), 0 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 18:19:49,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42692 states to 42692 states and 63939 transitions. [2021-12-06 18:19:49,555 INFO L78 Accepts]: Start accepts. Automaton has 42692 states and 63939 transitions. Word has length 111 [2021-12-06 18:19:49,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:19:49,555 INFO L470 AbstractCegarLoop]: Abstraction has 42692 states and 63939 transitions. [2021-12-06 18:19:49,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:19:49,555 INFO L276 IsEmpty]: Start isEmpty. Operand 42692 states and 63939 transitions. [2021-12-06 18:19:49,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-06 18:19:49,556 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:19:49,556 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:19:49,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 18:19:49,556 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:19:49,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:19:49,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1671616921, now seen corresponding path program 1 times [2021-12-06 18:19:49,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:19:49,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800803729] [2021-12-06 18:19:49,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:19:49,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:19:49,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:19:49,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:19:49,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:19:49,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800803729] [2021-12-06 18:19:49,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800803729] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:19:49,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:19:49,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:19:49,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881128774] [2021-12-06 18:19:49,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:19:49,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:19:49,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:19:49,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:19:49,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:19:49,613 INFO L87 Difference]: Start difference. First operand 42692 states and 63939 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:19:54,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:19:54,041 INFO L93 Difference]: Finished difference Result 113992 states and 171077 transitions. [2021-12-06 18:19:54,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:19:54,042 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-12-06 18:19:54,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:19:54,126 INFO L225 Difference]: With dead ends: 113992 [2021-12-06 18:19:54,126 INFO L226 Difference]: Without dead ends: 71366 [2021-12-06 18:19:54,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:19:54,153 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 824 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:19:54,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [824 Valid, 207 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:19:54,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71366 states. [2021-12-06 18:19:58,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71366 to 71364. [2021-12-06 18:19:58,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71364 states, 71363 states have (on average 1.4950464526435268) internal successors, (106691), 71363 states have internal predecessors, (106691), 0 states have call successors, (0), 0 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 18:19:58,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71364 states to 71364 states and 106691 transitions. [2021-12-06 18:19:58,852 INFO L78 Accepts]: Start accepts. Automaton has 71364 states and 106691 transitions. Word has length 112 [2021-12-06 18:19:58,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:19:58,852 INFO L470 AbstractCegarLoop]: Abstraction has 71364 states and 106691 transitions. [2021-12-06 18:19:58,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:19:58,852 INFO L276 IsEmpty]: Start isEmpty. Operand 71364 states and 106691 transitions. [2021-12-06 18:19:58,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-06 18:19:58,853 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:19:58,853 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:19:58,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 18:19:58,853 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:19:58,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:19:58,853 INFO L85 PathProgramCache]: Analyzing trace with hash 74809740, now seen corresponding path program 1 times [2021-12-06 18:19:58,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:19:58,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861467279] [2021-12-06 18:19:58,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:19:58,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:19:58,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:19:58,912 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 18:19:58,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:19:58,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861467279] [2021-12-06 18:19:58,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861467279] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:19:58,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:19:58,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:19:58,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390716109] [2021-12-06 18:19:58,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:19:58,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:19:58,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:19:58,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:19:58,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:19:58,913 INFO L87 Difference]: Start difference. First operand 71364 states and 106691 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:20:03,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:20:03,810 INFO L93 Difference]: Finished difference Result 142662 states and 213316 transitions. [2021-12-06 18:20:03,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:20:03,810 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-12-06 18:20:03,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:20:03,898 INFO L225 Difference]: With dead ends: 142662 [2021-12-06 18:20:03,898 INFO L226 Difference]: Without dead ends: 71364 [2021-12-06 18:20:03,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:20:03,934 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 450 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:20:03,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [450 Valid, 189 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:20:03,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71364 states. [2021-12-06 18:20:08,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71364 to 71364. [2021-12-06 18:20:08,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71364 states, 71363 states have (on average 1.4860782198057818) internal successors, (106051), 71363 states have internal predecessors, (106051), 0 states have call successors, (0), 0 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 18:20:08,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71364 states to 71364 states and 106051 transitions. [2021-12-06 18:20:08,957 INFO L78 Accepts]: Start accepts. Automaton has 71364 states and 106051 transitions. Word has length 112 [2021-12-06 18:20:08,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:20:08,957 INFO L470 AbstractCegarLoop]: Abstraction has 71364 states and 106051 transitions. [2021-12-06 18:20:08,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:20:08,957 INFO L276 IsEmpty]: Start isEmpty. Operand 71364 states and 106051 transitions. [2021-12-06 18:20:08,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-06 18:20:08,958 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:20:08,958 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:20:08,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 18:20:08,958 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:20:08,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:20:08,958 INFO L85 PathProgramCache]: Analyzing trace with hash -454480761, now seen corresponding path program 1 times [2021-12-06 18:20:08,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:20:08,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15471822] [2021-12-06 18:20:08,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:20:08,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:20:08,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:20:09,007 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 18:20:09,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:20:09,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15471822] [2021-12-06 18:20:09,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15471822] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:20:09,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:20:09,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:20:09,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709567151] [2021-12-06 18:20:09,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:20:09,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:20:09,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:20:09,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:20:09,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:20:09,009 INFO L87 Difference]: Start difference. First operand 71364 states and 106051 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:20:14,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:20:14,039 INFO L93 Difference]: Finished difference Result 142662 states and 212036 transitions. [2021-12-06 18:20:14,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:20:14,040 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-12-06 18:20:14,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:20:14,134 INFO L225 Difference]: With dead ends: 142662 [2021-12-06 18:20:14,134 INFO L226 Difference]: Without dead ends: 71364 [2021-12-06 18:20:14,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:20:14,183 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 499 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:20:14,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [499 Valid, 157 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:20:14,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71364 states. [2021-12-06 18:20:19,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71364 to 71364. [2021-12-06 18:20:19,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71364 states, 71363 states have (on average 1.4771099869680366) internal successors, (105411), 71363 states have internal predecessors, (105411), 0 states have call successors, (0), 0 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 18:20:19,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71364 states to 71364 states and 105411 transitions. [2021-12-06 18:20:19,582 INFO L78 Accepts]: Start accepts. Automaton has 71364 states and 105411 transitions. Word has length 112 [2021-12-06 18:20:19,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:20:19,582 INFO L470 AbstractCegarLoop]: Abstraction has 71364 states and 105411 transitions. [2021-12-06 18:20:19,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:20:19,583 INFO L276 IsEmpty]: Start isEmpty. Operand 71364 states and 105411 transitions. [2021-12-06 18:20:19,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-06 18:20:19,583 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:20:19,583 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:20:19,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 18:20:19,584 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:20:19,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:20:19,584 INFO L85 PathProgramCache]: Analyzing trace with hash -86209534, now seen corresponding path program 1 times [2021-12-06 18:20:19,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:20:19,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501814804] [2021-12-06 18:20:19,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:20:19,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:20:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:20:19,628 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 18:20:19,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:20:19,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501814804] [2021-12-06 18:20:19,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501814804] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:20:19,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:20:19,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:20:19,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507855982] [2021-12-06 18:20:19,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:20:19,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:20:19,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:20:19,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:20:19,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:20:19,629 INFO L87 Difference]: Start difference. First operand 71364 states and 105411 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:20:25,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:20:25,019 INFO L93 Difference]: Finished difference Result 142662 states and 210756 transitions. [2021-12-06 18:20:25,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:20:25,020 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-12-06 18:20:25,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:20:25,108 INFO L225 Difference]: With dead ends: 142662 [2021-12-06 18:20:25,109 INFO L226 Difference]: Without dead ends: 71364 [2021-12-06 18:20:25,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:20:25,147 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 522 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:20:25,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [522 Valid, 141 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:20:25,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71364 states. [2021-12-06 18:20:30,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71364 to 71364. [2021-12-06 18:20:30,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71364 states, 71363 states have (on average 1.4681417541302917) internal successors, (104771), 71363 states have internal predecessors, (104771), 0 states have call successors, (0), 0 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 18:20:30,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71364 states to 71364 states and 104771 transitions. [2021-12-06 18:20:30,785 INFO L78 Accepts]: Start accepts. Automaton has 71364 states and 104771 transitions. Word has length 112 [2021-12-06 18:20:30,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:20:30,785 INFO L470 AbstractCegarLoop]: Abstraction has 71364 states and 104771 transitions. [2021-12-06 18:20:30,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:20:30,786 INFO L276 IsEmpty]: Start isEmpty. Operand 71364 states and 104771 transitions. [2021-12-06 18:20:30,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-06 18:20:30,786 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:20:30,786 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:20:30,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 18:20:30,786 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:20:30,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:20:30,787 INFO L85 PathProgramCache]: Analyzing trace with hash -448328259, now seen corresponding path program 1 times [2021-12-06 18:20:30,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:20:30,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9683522] [2021-12-06 18:20:30,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:20:30,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:20:30,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:20:30,831 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 18:20:30,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:20:30,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9683522] [2021-12-06 18:20:30,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9683522] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:20:30,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:20:30,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:20:30,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651112101] [2021-12-06 18:20:30,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:20:30,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:20:30,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:20:30,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:20:30,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:20:30,832 INFO L87 Difference]: Start difference. First operand 71364 states and 104771 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:20:36,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:20:36,521 INFO L93 Difference]: Finished difference Result 142662 states and 209476 transitions. [2021-12-06 18:20:36,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:20:36,522 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-12-06 18:20:36,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:20:36,611 INFO L225 Difference]: With dead ends: 142662 [2021-12-06 18:20:36,611 INFO L226 Difference]: Without dead ends: 71364 [2021-12-06 18:20:36,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:20:36,647 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 506 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:20:36,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [506 Valid, 149 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:20:36,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71364 states. [2021-12-06 18:20:42,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71364 to 71364. [2021-12-06 18:20:42,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71364 states, 71363 states have (on average 1.4591735212925465) internal successors, (104131), 71363 states have internal predecessors, (104131), 0 states have call successors, (0), 0 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 18:20:42,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71364 states to 71364 states and 104131 transitions. [2021-12-06 18:20:42,571 INFO L78 Accepts]: Start accepts. Automaton has 71364 states and 104131 transitions. Word has length 112 [2021-12-06 18:20:42,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:20:42,571 INFO L470 AbstractCegarLoop]: Abstraction has 71364 states and 104131 transitions. [2021-12-06 18:20:42,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:20:42,572 INFO L276 IsEmpty]: Start isEmpty. Operand 71364 states and 104131 transitions. [2021-12-06 18:20:42,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-06 18:20:42,572 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:20:42,572 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:20:42,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 18:20:42,572 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:20:42,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:20:42,573 INFO L85 PathProgramCache]: Analyzing trace with hash 2105221922, now seen corresponding path program 1 times [2021-12-06 18:20:42,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:20:42,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085797291] [2021-12-06 18:20:42,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:20:42,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:20:42,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:20:42,616 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 18:20:42,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:20:42,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085797291] [2021-12-06 18:20:42,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085797291] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:20:42,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:20:42,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:20:42,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028093655] [2021-12-06 18:20:42,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:20:42,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:20:42,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:20:42,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:20:42,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:20:42,618 INFO L87 Difference]: Start difference. First operand 71364 states and 104131 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:20:48,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:20:48,667 INFO L93 Difference]: Finished difference Result 142662 states and 208196 transitions. [2021-12-06 18:20:48,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:20:48,668 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-12-06 18:20:48,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:20:48,756 INFO L225 Difference]: With dead ends: 142662 [2021-12-06 18:20:48,756 INFO L226 Difference]: Without dead ends: 71364 [2021-12-06 18:20:48,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:20:48,785 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 464 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:20:48,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [464 Valid, 173 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:20:48,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71364 states. [2021-12-06 18:20:54,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71364 to 71364. [2021-12-06 18:20:54,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71364 states, 71363 states have (on average 1.4502052884548016) internal successors, (103491), 71363 states have internal predecessors, (103491), 0 states have call successors, (0), 0 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 18:20:54,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71364 states to 71364 states and 103491 transitions. [2021-12-06 18:20:54,920 INFO L78 Accepts]: Start accepts. Automaton has 71364 states and 103491 transitions. Word has length 112 [2021-12-06 18:20:54,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:20:54,920 INFO L470 AbstractCegarLoop]: Abstraction has 71364 states and 103491 transitions. [2021-12-06 18:20:54,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:20:54,921 INFO L276 IsEmpty]: Start isEmpty. Operand 71364 states and 103491 transitions. [2021-12-06 18:20:54,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-06 18:20:54,921 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:20:54,921 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:20:54,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 18:20:54,921 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:20:54,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:20:54,922 INFO L85 PathProgramCache]: Analyzing trace with hash -2061660067, now seen corresponding path program 1 times [2021-12-06 18:20:54,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:20:54,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031339145] [2021-12-06 18:20:54,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:20:54,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:20:54,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:20:54,982 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 18:20:54,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:20:54,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031339145] [2021-12-06 18:20:54,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031339145] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:20:54,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:20:54,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:20:54,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197780033] [2021-12-06 18:20:54,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:20:54,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:20:54,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:20:54,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:20:54,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:20:54,984 INFO L87 Difference]: Start difference. First operand 71364 states and 103491 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:21:06,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:21:06,498 INFO L93 Difference]: Finished difference Result 135678 states and 196159 transitions. [2021-12-06 18:21:06,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:21:06,499 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-12-06 18:21:06,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:21:06,684 INFO L225 Difference]: With dead ends: 135678 [2021-12-06 18:21:06,684 INFO L226 Difference]: Without dead ends: 135676 [2021-12-06 18:21:06,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:21:06,713 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 260 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 917 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:21:06,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 917 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:21:06,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135676 states. [2021-12-06 18:21:13,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135676 to 73412. [2021-12-06 18:21:14,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73412 states, 73411 states have (on average 1.435901976543025) internal successors, (105411), 73411 states have internal predecessors, (105411), 0 states have call successors, (0), 0 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 18:21:14,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73412 states to 73412 states and 105411 transitions. [2021-12-06 18:21:14,119 INFO L78 Accepts]: Start accepts. Automaton has 73412 states and 105411 transitions. Word has length 112 [2021-12-06 18:21:14,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:21:14,119 INFO L470 AbstractCegarLoop]: Abstraction has 73412 states and 105411 transitions. [2021-12-06 18:21:14,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:21:14,119 INFO L276 IsEmpty]: Start isEmpty. Operand 73412 states and 105411 transitions. [2021-12-06 18:21:14,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-06 18:21:14,140 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:21:14,140 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:21:14,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 18:21:14,140 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:21:14,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:21:14,141 INFO L85 PathProgramCache]: Analyzing trace with hash -6470785, now seen corresponding path program 1 times [2021-12-06 18:21:14,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:21:14,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276682927] [2021-12-06 18:21:14,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:21:14,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:21:14,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:21:14,250 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 18:21:14,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:21:14,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276682927] [2021-12-06 18:21:14,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276682927] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:21:14,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:21:14,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 18:21:14,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516915185] [2021-12-06 18:21:14,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:21:14,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 18:21:14,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:21:14,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 18:21:14,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 18:21:14,252 INFO L87 Difference]: Start difference. First operand 73412 states and 105411 transitions. Second operand has 10 states, 10 states have (on average 14.8) internal successors, (148), 10 states have internal predecessors, (148), 0 states have call successors, (0), 0 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 18:22:14,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:22:14,504 INFO L93 Difference]: Finished difference Result 682966 states and 980364 transitions. [2021-12-06 18:22:14,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 18:22:14,504 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.8) internal successors, (148), 10 states have internal predecessors, (148), 0 states have call successors, (0), 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 150 [2021-12-06 18:22:14,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:22:15,691 INFO L225 Difference]: With dead ends: 682966 [2021-12-06 18:22:15,691 INFO L226 Difference]: Without dead ends: 609620 [2021-12-06 18:22:15,845 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 18:22:15,845 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 2295 mSDsluCounter, 2500 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2295 SdHoareTripleChecker+Valid, 2840 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:22:15,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2295 Valid, 2840 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:22:16,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609620 states. [2021-12-06 18:22:36,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609620 to 146756. [2021-12-06 18:22:36,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146756 states, 146755 states have (on average 1.4317399747879118) internal successors, (210115), 146755 states have internal predecessors, (210115), 0 states have call successors, (0), 0 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 18:22:36,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146756 states to 146756 states and 210115 transitions. [2021-12-06 18:22:36,738 INFO L78 Accepts]: Start accepts. Automaton has 146756 states and 210115 transitions. Word has length 150 [2021-12-06 18:22:36,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:22:36,738 INFO L470 AbstractCegarLoop]: Abstraction has 146756 states and 210115 transitions. [2021-12-06 18:22:36,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.8) internal successors, (148), 10 states have internal predecessors, (148), 0 states have call successors, (0), 0 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 18:22:36,738 INFO L276 IsEmpty]: Start isEmpty. Operand 146756 states and 210115 transitions. [2021-12-06 18:22:36,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-06 18:22:36,757 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:22:36,757 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:22:36,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 18:22:36,758 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:22:36,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:22:36,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1060449285, now seen corresponding path program 1 times [2021-12-06 18:22:36,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:22:36,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477609940] [2021-12-06 18:22:36,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:22:36,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:22:36,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:22:36,853 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 18:22:36,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:22:36,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477609940] [2021-12-06 18:22:36,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477609940] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:22:36,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:22:36,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 18:22:36,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409032768] [2021-12-06 18:22:36,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:22:36,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 18:22:36,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:22:36,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 18:22:36,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 18:22:36,855 INFO L87 Difference]: Start difference. First operand 146756 states and 210115 transitions. Second operand has 10 states, 10 states have (on average 14.7) internal successors, (147), 10 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 18:23:59,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:23:59,454 INFO L93 Difference]: Finished difference Result 756310 states and 1085068 transitions. [2021-12-06 18:23:59,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 18:23:59,455 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.7) internal successors, (147), 10 states have internal predecessors, (147), 0 states have call successors, (0), 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 150 [2021-12-06 18:23:59,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:24:00,754 INFO L225 Difference]: With dead ends: 756310 [2021-12-06 18:24:00,754 INFO L226 Difference]: Without dead ends: 682964 [2021-12-06 18:24:00,928 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 18:24:00,929 INFO L933 BasicCegarLoop]: 337 mSDtfsCounter, 2352 mSDsluCounter, 2287 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2352 SdHoareTripleChecker+Valid, 2624 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:24:00,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2352 Valid, 2624 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:24:01,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682964 states. [2021-12-06 18:24:38,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682964 to 256836. [2021-12-06 18:24:38,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256836 states, 256835 states have (on average 1.4273560846457842) internal successors, (366595), 256835 states have internal predecessors, (366595), 0 states have call successors, (0), 0 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 18:24:39,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256836 states to 256836 states and 366595 transitions. [2021-12-06 18:24:39,086 INFO L78 Accepts]: Start accepts. Automaton has 256836 states and 366595 transitions. Word has length 150 [2021-12-06 18:24:39,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:24:39,086 INFO L470 AbstractCegarLoop]: Abstraction has 256836 states and 366595 transitions. [2021-12-06 18:24:39,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.7) internal successors, (147), 10 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 18:24:39,087 INFO L276 IsEmpty]: Start isEmpty. Operand 256836 states and 366595 transitions. [2021-12-06 18:24:39,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-06 18:24:39,106 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:24:39,106 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:24:39,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 18:24:39,106 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:24:39,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:24:39,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1565789295, now seen corresponding path program 1 times [2021-12-06 18:24:39,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:24:39,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615995167] [2021-12-06 18:24:39,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:24:39,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:24:39,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:24:39,184 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 18:24:39,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:24:39,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615995167] [2021-12-06 18:24:39,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615995167] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:24:39,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:24:39,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 18:24:39,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027839439] [2021-12-06 18:24:39,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:24:39,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 18:24:39,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:24:39,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 18:24:39,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 18:24:39,186 INFO L87 Difference]: Start difference. First operand 256836 states and 366595 transitions. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 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 18:26:23,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:26:23,494 INFO L93 Difference]: Finished difference Result 829654 states and 1189772 transitions. [2021-12-06 18:26:23,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 18:26:23,494 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 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 150 [2021-12-06 18:26:23,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:26:24,806 INFO L225 Difference]: With dead ends: 829654 [2021-12-06 18:26:24,806 INFO L226 Difference]: Without dead ends: 756308 [2021-12-06 18:26:25,019 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 18:26:25,019 INFO L933 BasicCegarLoop]: 334 mSDtfsCounter, 2603 mSDsluCounter, 2308 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2603 SdHoareTripleChecker+Valid, 2642 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:26:25,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2603 Valid, 2642 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:26:25,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756308 states. [2021-12-06 18:27:16,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756308 to 330180. [2021-12-06 18:27:16,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330180 states, 330179 states have (on average 1.4274045290584805) internal successors, (471299), 330179 states have internal predecessors, (471299), 0 states have call successors, (0), 0 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 18:27:17,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330180 states to 330180 states and 471299 transitions. [2021-12-06 18:27:17,188 INFO L78 Accepts]: Start accepts. Automaton has 330180 states and 471299 transitions. Word has length 150 [2021-12-06 18:27:17,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:27:17,189 INFO L470 AbstractCegarLoop]: Abstraction has 330180 states and 471299 transitions. [2021-12-06 18:27:17,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 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 18:27:17,189 INFO L276 IsEmpty]: Start isEmpty. Operand 330180 states and 471299 transitions. [2021-12-06 18:27:17,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-06 18:27:17,213 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:27:17,213 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:27:17,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-06 18:27:17,214 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:27:17,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:27:17,214 INFO L85 PathProgramCache]: Analyzing trace with hash -2136385251, now seen corresponding path program 1 times [2021-12-06 18:27:17,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:27:17,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476270114] [2021-12-06 18:27:17,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:27:17,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:27:17,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:17,297 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-06 18:27:17,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:27:17,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476270114] [2021-12-06 18:27:17,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476270114] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:27:17,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:27:17,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 18:27:17,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412274207] [2021-12-06 18:27:17,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:27:17,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 18:27:17,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:27:17,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 18:27:17,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 18:27:17,299 INFO L87 Difference]: Start difference. First operand 330180 states and 471299 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 18:29:21,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:29:21,025 INFO L93 Difference]: Finished difference Result 902998 states and 1294476 transitions. [2021-12-06 18:29:21,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 18:29:21,025 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 150 [2021-12-06 18:29:21,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:29:22,724 INFO L225 Difference]: With dead ends: 902998 [2021-12-06 18:29:22,724 INFO L226 Difference]: Without dead ends: 829652 [2021-12-06 18:29:22,931 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 18:29:22,931 INFO L933 BasicCegarLoop]: 331 mSDtfsCounter, 2736 mSDsluCounter, 2291 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2736 SdHoareTripleChecker+Valid, 2622 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:29:22,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2736 Valid, 2622 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:29:23,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829652 states. [2021-12-06 18:30:25,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829652 to 403524. [2021-12-06 18:30:26,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403524 states, 403523 states have (on average 1.427435363040025) internal successors, (576003), 403523 states have internal predecessors, (576003), 0 states have call successors, (0), 0 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 18:30:27,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403524 states to 403524 states and 576003 transitions. [2021-12-06 18:30:27,251 INFO L78 Accepts]: Start accepts. Automaton has 403524 states and 576003 transitions. Word has length 150 [2021-12-06 18:30:27,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:30:27,252 INFO L470 AbstractCegarLoop]: Abstraction has 403524 states and 576003 transitions. [2021-12-06 18:30:27,252 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 18:30:27,252 INFO L276 IsEmpty]: Start isEmpty. Operand 403524 states and 576003 transitions. [2021-12-06 18:30:27,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-06 18:30:27,277 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:30:27,277 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:30:27,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-06 18:30:27,277 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:30:27,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:30:27,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1004635939, now seen corresponding path program 1 times [2021-12-06 18:30:27,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:30:27,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733420201] [2021-12-06 18:30:27,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:30:27,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:30:27,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:30:27,368 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-06 18:30:27,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:30:27,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733420201] [2021-12-06 18:30:27,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733420201] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:30:27,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:30:27,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 18:30:27,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419350595] [2021-12-06 18:30:27,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:30:27,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 18:30:27,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:30:27,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 18:30:27,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 18:30:27,369 INFO L87 Difference]: Start difference. First operand 403524 states and 576003 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)