./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label41+token_ring.05.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07edb0-0615-42bc-a0ae-3932b2ce2484/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07edb0-0615-42bc-a0ae-3932b2ce2484/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07edb0-0615-42bc-a0ae-3932b2ce2484/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07edb0-0615-42bc-a0ae-3932b2ce2484/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label41+token_ring.05.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07edb0-0615-42bc-a0ae-3932b2ce2484/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07edb0-0615-42bc-a0ae-3932b2ce2484/bin/uautomizer-wIGwrQj20G --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 656e7d531f093f57119c43761759c34009a10647aaa5132e17630f3bef948c7c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 14:00:43,633 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 14:00:43,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 14:00:43,699 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 14:00:43,699 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 14:00:43,705 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 14:00:43,707 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 14:00:43,711 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 14:00:43,714 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 14:00:43,722 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 14:00:43,724 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 14:00:43,727 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 14:00:43,727 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 14:00:43,730 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 14:00:43,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 14:00:43,744 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 14:00:43,745 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 14:00:43,747 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 14:00:43,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 14:00:43,753 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 14:00:43,756 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 14:00:43,758 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 14:00:43,763 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 14:00:43,764 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 14:00:43,779 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 14:00:43,780 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 14:00:43,780 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 14:00:43,782 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 14:00:43,783 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 14:00:43,784 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 14:00:43,785 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 14:00:43,786 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 14:00:43,793 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 14:00:43,796 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 14:00:43,799 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 14:00:43,799 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 14:00:43,800 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 14:00:43,800 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 14:00:43,801 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 14:00:43,802 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 14:00:43,803 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 14:00:43,804 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07edb0-0615-42bc-a0ae-3932b2ce2484/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 14:00:43,861 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 14:00:43,861 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 14:00:43,862 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 14:00:43,862 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 14:00:43,865 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 14:00:43,865 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 14:00:43,865 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 14:00:43,865 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 14:00:43,866 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 14:00:43,866 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 14:00:43,867 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 14:00:43,867 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 14:00:43,868 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 14:00:43,868 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 14:00:43,868 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 14:00:43,868 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 14:00:43,868 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 14:00:43,869 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 14:00:43,869 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 14:00:43,869 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 14:00:43,869 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 14:00:43,870 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 14:00:43,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 14:00:43,870 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 14:00:43,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 14:00:43,870 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 14:00:43,871 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 14:00:43,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 14:00:43,871 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 14:00:43,873 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 14:00:43,873 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 14:00:43,873 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 14:00:43,874 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07edb0-0615-42bc-a0ae-3932b2ce2484/bin/uautomizer-wIGwrQj20G/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07edb0-0615-42bc-a0ae-3932b2ce2484/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 656e7d531f093f57119c43761759c34009a10647aaa5132e17630f3bef948c7c [2021-11-23 14:00:44,266 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 14:00:44,291 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 14:00:44,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 14:00:44,296 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 14:00:44,297 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 14:00:44,299 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07edb0-0615-42bc-a0ae-3932b2ce2484/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/combinations/Problem05_label41+token_ring.05.cil-1.c [2021-11-23 14:00:44,385 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07edb0-0615-42bc-a0ae-3932b2ce2484/bin/uautomizer-wIGwrQj20G/data/01e829a91/e045ecd188e241a8af8d1df596e17333/FLAG703e19a24 [2021-11-23 14:00:45,649 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 14:00:45,651 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07edb0-0615-42bc-a0ae-3932b2ce2484/sv-benchmarks/c/combinations/Problem05_label41+token_ring.05.cil-1.c [2021-11-23 14:00:45,731 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07edb0-0615-42bc-a0ae-3932b2ce2484/bin/uautomizer-wIGwrQj20G/data/01e829a91/e045ecd188e241a8af8d1df596e17333/FLAG703e19a24 [2021-11-23 14:00:45,860 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07edb0-0615-42bc-a0ae-3932b2ce2484/bin/uautomizer-wIGwrQj20G/data/01e829a91/e045ecd188e241a8af8d1df596e17333 [2021-11-23 14:00:45,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 14:00:45,864 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 14:00:45,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 14:00:45,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 14:00:45,870 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 14:00:45,871 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:00:45" (1/1) ... [2021-11-23 14:00:45,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3159a492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:45, skipping insertion in model container [2021-11-23 14:00:45,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:00:45" (1/1) ... [2021-11-23 14:00:45,881 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 14:00:46,199 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 14:00:49,142 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_ce07edb0-0615-42bc-a0ae-3932b2ce2484/sv-benchmarks/c/combinations/Problem05_label41+token_ring.05.cil-1.c[376251,376264] [2021-11-23 14:00:49,193 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_ce07edb0-0615-42bc-a0ae-3932b2ce2484/sv-benchmarks/c/combinations/Problem05_label41+token_ring.05.cil-1.c[383339,383352] [2021-11-23 14:00:49,484 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 14:00:49,495 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 14:00:50,931 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_ce07edb0-0615-42bc-a0ae-3932b2ce2484/sv-benchmarks/c/combinations/Problem05_label41+token_ring.05.cil-1.c[376251,376264] [2021-11-23 14:00:50,945 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_ce07edb0-0615-42bc-a0ae-3932b2ce2484/sv-benchmarks/c/combinations/Problem05_label41+token_ring.05.cil-1.c[383339,383352] [2021-11-23 14:00:50,980 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 14:00:51,083 INFO L208 MainTranslator]: Completed translation [2021-11-23 14:00:51,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:51 WrapperNode [2021-11-23 14:00:51,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 14:00:51,085 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 14:00:51,086 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 14:00:51,087 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 14:00:51,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:51" (1/1) ... [2021-11-23 14:00:51,224 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:51" (1/1) ... [2021-11-23 14:00:51,818 INFO L137 Inliner]: procedures = 54, calls = 56, calls flagged for inlining = 51, calls inlined = 104, statements flattened = 13752 [2021-11-23 14:00:51,819 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 14:00:51,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 14:00:51,820 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 14:00:51,820 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 14:00:51,832 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:51" (1/1) ... [2021-11-23 14:00:51,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:51" (1/1) ... [2021-11-23 14:00:51,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:51" (1/1) ... [2021-11-23 14:00:51,943 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:51" (1/1) ... [2021-11-23 14:00:52,326 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:51" (1/1) ... [2021-11-23 14:00:52,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:51" (1/1) ... [2021-11-23 14:00:52,454 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:51" (1/1) ... [2021-11-23 14:00:52,682 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 14:00:52,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 14:00:52,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 14:00:52,685 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 14:00:52,688 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:51" (1/1) ... [2021-11-23 14:00:52,713 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 14:00:52,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07edb0-0615-42bc-a0ae-3932b2ce2484/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:00:52,775 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07edb0-0615-42bc-a0ae-3932b2ce2484/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 14:00:52,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce07edb0-0615-42bc-a0ae-3932b2ce2484/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 14:00:52,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 14:00:52,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 14:00:52,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 14:00:52,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 14:00:53,114 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 14:00:53,116 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 14:01:03,032 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 14:01:03,070 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 14:01:03,071 INFO L301 CfgBuilder]: Removed 9 assume(true) statements. [2021-11-23 14:01:03,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:01:03 BoogieIcfgContainer [2021-11-23 14:01:03,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 14:01:03,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 14:01:03,082 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 14:01:03,086 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 14:01:03,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:00:45" (1/3) ... [2021-11-23 14:01:03,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69e94820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:01:03, skipping insertion in model container [2021-11-23 14:01:03,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:51" (2/3) ... [2021-11-23 14:01:03,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69e94820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:01:03, skipping insertion in model container [2021-11-23 14:01:03,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:01:03" (3/3) ... [2021-11-23 14:01:03,090 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label41+token_ring.05.cil-1.c [2021-11-23 14:01:03,097 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 14:01:03,097 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 14:01:03,176 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 14:01:03,185 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 14:01:03,185 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 14:01:03,430 INFO L276 IsEmpty]: Start isEmpty. Operand has 2736 states, 2733 states have (on average 1.8027808269301133) internal successors, (4927), 2735 states have internal predecessors, (4927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:03,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 14:01:03,448 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:01:03,449 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] [2021-11-23 14:01:03,450 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:01:03,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:01:03,469 INFO L85 PathProgramCache]: Analyzing trace with hash -704536440, now seen corresponding path program 1 times [2021-11-23 14:01:03,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:01:03,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897462949] [2021-11-23 14:01:03,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:01:03,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:01:03,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:01:03,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:01:03,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:01:03,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897462949] [2021-11-23 14:01:03,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897462949] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:01:03,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:01:03,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 14:01:03,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166933448] [2021-11-23 14:01:03,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:01:03,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:01:03,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:01:03,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:01:03,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:01:03,851 INFO L87 Difference]: Start difference. First operand has 2736 states, 2733 states have (on average 1.8027808269301133) internal successors, (4927), 2735 states have internal predecessors, (4927), 0 states have call successors, (0), 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 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:04,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:01:04,351 INFO L93 Difference]: Finished difference Result 5888 states and 10485 transitions. [2021-11-23 14:01:04,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:01:04,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-11-23 14:01:04,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:01:04,396 INFO L225 Difference]: With dead ends: 5888 [2021-11-23 14:01:04,396 INFO L226 Difference]: Without dead ends: 3094 [2021-11-23 14:01:04,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:01:04,412 INFO L933 BasicCegarLoop]: 4840 mSDtfsCounter, 4766 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4766 SdHoareTripleChecker+Valid, 5532 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:01:04,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4766 Valid, 5532 Invalid, 14 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:01:04,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3094 states. [2021-11-23 14:01:04,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3094 to 3092. [2021-11-23 14:01:04,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.749190938511327) internal successors, (5405), 3091 states have internal predecessors, (5405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:04,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5405 transitions. [2021-11-23 14:01:04,651 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5405 transitions. Word has length 88 [2021-11-23 14:01:04,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:01:04,652 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5405 transitions. [2021-11-23 14:01:04,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:04,653 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5405 transitions. [2021-11-23 14:01:04,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 14:01:04,662 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:01:04,662 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] [2021-11-23 14:01:04,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 14:01:04,663 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:01:04,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:01:04,664 INFO L85 PathProgramCache]: Analyzing trace with hash -858645304, now seen corresponding path program 1 times [2021-11-23 14:01:04,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:01:04,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774862867] [2021-11-23 14:01:04,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:01:04,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:01:04,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:01:04,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:01:04,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:01:04,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774862867] [2021-11-23 14:01:04,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774862867] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:01:04,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:01:04,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 14:01:04,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953606458] [2021-11-23 14:01:04,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:01:04,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:01:04,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:01:04,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:01:04,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:01:04,822 INFO L87 Difference]: Start difference. First operand 3092 states and 5405 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:04,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:01:04,967 INFO L93 Difference]: Finished difference Result 4050 states and 6832 transitions. [2021-11-23 14:01:04,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:01:04,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-11-23 14:01:04,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:01:04,992 INFO L225 Difference]: With dead ends: 4050 [2021-11-23 14:01:04,992 INFO L226 Difference]: Without dead ends: 3092 [2021-11-23 14:01:05,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:01:05,002 INFO L933 BasicCegarLoop]: 4767 mSDtfsCounter, 4759 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4759 SdHoareTripleChecker+Valid, 4767 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:01:05,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4759 Valid, 4767 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:01:05,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2021-11-23 14:01:05,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 3092. [2021-11-23 14:01:05,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.7466019417475729) internal successors, (5397), 3091 states have internal predecessors, (5397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:05,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5397 transitions. [2021-11-23 14:01:05,133 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5397 transitions. Word has length 88 [2021-11-23 14:01:05,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:01:05,134 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5397 transitions. [2021-11-23 14:01:05,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:05,135 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5397 transitions. [2021-11-23 14:01:05,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 14:01:05,139 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:01:05,140 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] [2021-11-23 14:01:05,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 14:01:05,144 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:01:05,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:01:05,146 INFO L85 PathProgramCache]: Analyzing trace with hash 937498760, now seen corresponding path program 1 times [2021-11-23 14:01:05,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:01:05,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787000196] [2021-11-23 14:01:05,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:01:05,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:01:05,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:01:05,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:01:05,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:01:05,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787000196] [2021-11-23 14:01:05,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787000196] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:01:05,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:01:05,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 14:01:05,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215047661] [2021-11-23 14:01:05,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:01:05,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:01:05,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:01:05,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:01:05,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:01:05,258 INFO L87 Difference]: Start difference. First operand 3092 states and 5397 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:05,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:01:05,380 INFO L93 Difference]: Finished difference Result 4049 states and 6815 transitions. [2021-11-23 14:01:05,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:01:05,381 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-11-23 14:01:05,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:01:05,403 INFO L225 Difference]: With dead ends: 4049 [2021-11-23 14:01:05,403 INFO L226 Difference]: Without dead ends: 3092 [2021-11-23 14:01:05,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:01:05,408 INFO L933 BasicCegarLoop]: 4762 mSDtfsCounter, 4753 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4753 SdHoareTripleChecker+Valid, 4762 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:01:05,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4753 Valid, 4762 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:01:05,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2021-11-23 14:01:05,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 3092. [2021-11-23 14:01:05,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.7440129449838189) internal successors, (5389), 3091 states have internal predecessors, (5389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:05,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5389 transitions. [2021-11-23 14:01:05,530 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5389 transitions. Word has length 88 [2021-11-23 14:01:05,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:01:05,530 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5389 transitions. [2021-11-23 14:01:05,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:05,531 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5389 transitions. [2021-11-23 14:01:05,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 14:01:05,533 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:01:05,533 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] [2021-11-23 14:01:05,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 14:01:05,534 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:01:05,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:01:05,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1965270216, now seen corresponding path program 1 times [2021-11-23 14:01:05,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:01:05,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334695873] [2021-11-23 14:01:05,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:01:05,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:01:05,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:01:05,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:01:05,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:01:05,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334695873] [2021-11-23 14:01:05,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334695873] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:01:05,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:01:05,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:01:05,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503821891] [2021-11-23 14:01:05,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:01:05,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 14:01:05,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:01:05,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 14:01:05,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 14:01:05,658 INFO L87 Difference]: Start difference. First operand 3092 states and 5389 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:05,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:01:05,915 INFO L93 Difference]: Finished difference Result 4949 states and 8125 transitions. [2021-11-23 14:01:05,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 14:01:05,916 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-11-23 14:01:05,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:01:05,947 INFO L225 Difference]: With dead ends: 4949 [2021-11-23 14:01:05,947 INFO L226 Difference]: Without dead ends: 3993 [2021-11-23 14:01:05,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:01:05,952 INFO L933 BasicCegarLoop]: 5451 mSDtfsCounter, 9508 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9508 SdHoareTripleChecker+Valid, 6147 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:01:05,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9508 Valid, 6147 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:01:05,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3993 states. [2021-11-23 14:01:06,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3993 to 3092. [2021-11-23 14:01:06,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.743042071197411) internal successors, (5386), 3091 states have internal predecessors, (5386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:06,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5386 transitions. [2021-11-23 14:01:06,101 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5386 transitions. Word has length 88 [2021-11-23 14:01:06,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:01:06,102 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5386 transitions. [2021-11-23 14:01:06,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:06,102 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5386 transitions. [2021-11-23 14:01:06,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 14:01:06,104 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:01:06,104 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] [2021-11-23 14:01:06,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 14:01:06,105 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:01:06,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:01:06,105 INFO L85 PathProgramCache]: Analyzing trace with hash 54227658, now seen corresponding path program 1 times [2021-11-23 14:01:06,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:01:06,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603562219] [2021-11-23 14:01:06,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:01:06,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:01:06,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:01:06,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:01:06,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:01:06,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603562219] [2021-11-23 14:01:06,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603562219] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:01:06,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:01:06,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:01:06,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092348441] [2021-11-23 14:01:06,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:01:06,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 14:01:06,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:01:06,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 14:01:06,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 14:01:06,172 INFO L87 Difference]: Start difference. First operand 3092 states and 5386 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:06,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:01:06,410 INFO L93 Difference]: Finished difference Result 4947 states and 8114 transitions. [2021-11-23 14:01:06,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 14:01:06,411 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-11-23 14:01:06,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:01:06,440 INFO L225 Difference]: With dead ends: 4947 [2021-11-23 14:01:06,440 INFO L226 Difference]: Without dead ends: 3992 [2021-11-23 14:01:06,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:01:06,446 INFO L933 BasicCegarLoop]: 5446 mSDtfsCounter, 9503 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9503 SdHoareTripleChecker+Valid, 6139 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:01:06,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9503 Valid, 6139 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:01:06,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3992 states. [2021-11-23 14:01:06,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3992 to 3092. [2021-11-23 14:01:06,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.7420711974110032) internal successors, (5383), 3091 states have internal predecessors, (5383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:06,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5383 transitions. [2021-11-23 14:01:06,601 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5383 transitions. Word has length 88 [2021-11-23 14:01:06,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:01:06,602 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5383 transitions. [2021-11-23 14:01:06,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:06,602 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5383 transitions. [2021-11-23 14:01:06,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 14:01:06,604 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:01:06,604 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] [2021-11-23 14:01:06,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 14:01:06,605 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:01:06,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:01:06,605 INFO L85 PathProgramCache]: Analyzing trace with hash 131128456, now seen corresponding path program 1 times [2021-11-23 14:01:06,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:01:06,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688346233] [2021-11-23 14:01:06,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:01:06,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:01:06,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:01:06,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:01:06,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:01:06,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688346233] [2021-11-23 14:01:06,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688346233] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:01:06,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:01:06,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:01:06,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137624204] [2021-11-23 14:01:06,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:01:06,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 14:01:06,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:01:06,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 14:01:06,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 14:01:06,670 INFO L87 Difference]: Start difference. First operand 3092 states and 5383 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:06,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:01:06,970 INFO L93 Difference]: Finished difference Result 4857 states and 7977 transitions. [2021-11-23 14:01:06,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 14:01:06,970 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-11-23 14:01:06,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:01:06,997 INFO L225 Difference]: With dead ends: 4857 [2021-11-23 14:01:06,998 INFO L226 Difference]: Without dead ends: 3904 [2021-11-23 14:01:07,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:01:07,003 INFO L933 BasicCegarLoop]: 5346 mSDtfsCounter, 9433 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9433 SdHoareTripleChecker+Valid, 6016 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:01:07,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9433 Valid, 6016 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:01:07,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3904 states. [2021-11-23 14:01:07,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3904 to 3092. [2021-11-23 14:01:07,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.7411003236245954) internal successors, (5380), 3091 states have internal predecessors, (5380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:07,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5380 transitions. [2021-11-23 14:01:07,308 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5380 transitions. Word has length 88 [2021-11-23 14:01:07,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:01:07,308 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5380 transitions. [2021-11-23 14:01:07,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:07,309 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5380 transitions. [2021-11-23 14:01:07,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 14:01:07,310 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:01:07,310 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] [2021-11-23 14:01:07,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 14:01:07,311 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:01:07,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:01:07,312 INFO L85 PathProgramCache]: Analyzing trace with hash 2039586246, now seen corresponding path program 1 times [2021-11-23 14:01:07,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:01:07,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644354917] [2021-11-23 14:01:07,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:01:07,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:01:07,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:01:07,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:01:07,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:01:07,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644354917] [2021-11-23 14:01:07,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644354917] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:01:07,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:01:07,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:01:07,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535007338] [2021-11-23 14:01:07,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:01:07,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 14:01:07,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:01:07,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 14:01:07,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 14:01:07,399 INFO L87 Difference]: Start difference. First operand 3092 states and 5380 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:07,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:01:07,714 INFO L93 Difference]: Finished difference Result 4853 states and 7964 transitions. [2021-11-23 14:01:07,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 14:01:07,715 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-11-23 14:01:07,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:01:07,752 INFO L225 Difference]: With dead ends: 4853 [2021-11-23 14:01:07,760 INFO L226 Difference]: Without dead ends: 3901 [2021-11-23 14:01:07,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:01:07,765 INFO L933 BasicCegarLoop]: 4855 mSDtfsCounter, 9925 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9925 SdHoareTripleChecker+Valid, 5522 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:01:07,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9925 Valid, 5522 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:01:07,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3901 states. [2021-11-23 14:01:07,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3901 to 3092. [2021-11-23 14:01:07,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.7401294498381876) internal successors, (5377), 3091 states have internal predecessors, (5377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:07,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5377 transitions. [2021-11-23 14:01:07,925 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5377 transitions. Word has length 88 [2021-11-23 14:01:07,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:01:07,926 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5377 transitions. [2021-11-23 14:01:07,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:07,927 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5377 transitions. [2021-11-23 14:01:07,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 14:01:07,929 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:01:07,929 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] [2021-11-23 14:01:07,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 14:01:07,930 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:01:07,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:01:07,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1546960072, now seen corresponding path program 1 times [2021-11-23 14:01:07,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:01:07,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754765002] [2021-11-23 14:01:07,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:01:07,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:01:07,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:01:07,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:01:07,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:01:07,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754765002] [2021-11-23 14:01:07,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754765002] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:01:07,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:01:07,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 14:01:07,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804182609] [2021-11-23 14:01:07,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:01:07,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:01:07,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:01:07,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:01:07,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:01:07,975 INFO L87 Difference]: Start difference. First operand 3092 states and 5377 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:08,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:01:08,145 INFO L93 Difference]: Finished difference Result 4043 states and 6768 transitions. [2021-11-23 14:01:08,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:01:08,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-11-23 14:01:08,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:01:08,156 INFO L225 Difference]: With dead ends: 4043 [2021-11-23 14:01:08,156 INFO L226 Difference]: Without dead ends: 3092 [2021-11-23 14:01:08,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:01:08,160 INFO L933 BasicCegarLoop]: 4733 mSDtfsCounter, 4664 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4664 SdHoareTripleChecker+Valid, 4791 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:01:08,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4664 Valid, 4791 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:01:08,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2021-11-23 14:01:08,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 3092. [2021-11-23 14:01:08,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.733009708737864) internal successors, (5355), 3091 states have internal predecessors, (5355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:08,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5355 transitions. [2021-11-23 14:01:08,315 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5355 transitions. Word has length 88 [2021-11-23 14:01:08,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:01:08,316 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5355 transitions. [2021-11-23 14:01:08,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:08,316 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5355 transitions. [2021-11-23 14:01:08,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 14:01:08,318 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:01:08,318 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] [2021-11-23 14:01:08,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 14:01:08,319 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:01:08,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:01:08,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1288884727, now seen corresponding path program 1 times [2021-11-23 14:01:08,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:01:08,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484776505] [2021-11-23 14:01:08,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:01:08,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:01:08,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:01:08,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:01:08,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:01:08,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484776505] [2021-11-23 14:01:08,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484776505] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:01:08,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:01:08,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:01:08,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826166611] [2021-11-23 14:01:08,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:01:08,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 14:01:08,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:01:08,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 14:01:08,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 14:01:08,365 INFO L87 Difference]: Start difference. First operand 3092 states and 5355 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:08,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:01:08,681 INFO L93 Difference]: Finished difference Result 4851 states and 7891 transitions. [2021-11-23 14:01:08,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 14:01:08,682 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-11-23 14:01:08,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:01:08,694 INFO L225 Difference]: With dead ends: 4851 [2021-11-23 14:01:08,694 INFO L226 Difference]: Without dead ends: 3901 [2021-11-23 14:01:08,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:01:08,699 INFO L933 BasicCegarLoop]: 5312 mSDtfsCounter, 9397 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9397 SdHoareTripleChecker+Valid, 5964 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:01:08,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9397 Valid, 5964 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:01:08,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3901 states. [2021-11-23 14:01:08,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3901 to 3092. [2021-11-23 14:01:08,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.7320388349514564) internal successors, (5352), 3091 states have internal predecessors, (5352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:08,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5352 transitions. [2021-11-23 14:01:08,861 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5352 transitions. Word has length 88 [2021-11-23 14:01:08,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:01:08,862 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5352 transitions. [2021-11-23 14:01:08,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:08,862 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5352 transitions. [2021-11-23 14:01:08,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 14:01:08,864 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:01:08,864 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] [2021-11-23 14:01:08,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 14:01:08,865 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:01:08,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:01:08,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1789928843, now seen corresponding path program 1 times [2021-11-23 14:01:08,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:01:08,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13104367] [2021-11-23 14:01:08,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:01:08,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:01:08,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:01:08,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:01:08,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:01:08,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13104367] [2021-11-23 14:01:08,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13104367] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:01:08,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:01:08,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:01:08,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269993477] [2021-11-23 14:01:08,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:01:08,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 14:01:08,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:01:08,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 14:01:08,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 14:01:08,917 INFO L87 Difference]: Start difference. First operand 3092 states and 5352 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:09,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:01:09,235 INFO L93 Difference]: Finished difference Result 4849 states and 7880 transitions. [2021-11-23 14:01:09,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 14:01:09,236 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-11-23 14:01:09,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:01:09,249 INFO L225 Difference]: With dead ends: 4849 [2021-11-23 14:01:09,249 INFO L226 Difference]: Without dead ends: 3900 [2021-11-23 14:01:09,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:01:09,254 INFO L933 BasicCegarLoop]: 5307 mSDtfsCounter, 9392 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9392 SdHoareTripleChecker+Valid, 5956 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:01:09,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9392 Valid, 5956 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:01:09,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3900 states. [2021-11-23 14:01:09,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3900 to 3092. [2021-11-23 14:01:09,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.7310679611650486) internal successors, (5349), 3091 states have internal predecessors, (5349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:09,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5349 transitions. [2021-11-23 14:01:09,545 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5349 transitions. Word has length 88 [2021-11-23 14:01:09,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:01:09,545 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5349 transitions. [2021-11-23 14:01:09,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:09,546 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5349 transitions. [2021-11-23 14:01:09,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 14:01:09,548 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:01:09,548 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:01:09,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 14:01:09,549 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:01:09,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:01:09,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1057961417, now seen corresponding path program 1 times [2021-11-23 14:01:09,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:01:09,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817028704] [2021-11-23 14:01:09,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:01:09,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:01:09,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:01:09,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:01:09,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:01:09,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817028704] [2021-11-23 14:01:09,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817028704] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:01:09,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:01:09,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:01:09,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662310624] [2021-11-23 14:01:09,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:01:09,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 14:01:09,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:01:09,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 14:01:09,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 14:01:09,595 INFO L87 Difference]: Start difference. First operand 3092 states and 5349 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:09,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:01:09,936 INFO L93 Difference]: Finished difference Result 4847 states and 7869 transitions. [2021-11-23 14:01:09,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 14:01:09,937 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-11-23 14:01:09,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:01:09,951 INFO L225 Difference]: With dead ends: 4847 [2021-11-23 14:01:09,951 INFO L226 Difference]: Without dead ends: 3899 [2021-11-23 14:01:09,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:01:09,956 INFO L933 BasicCegarLoop]: 5302 mSDtfsCounter, 9387 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9387 SdHoareTripleChecker+Valid, 5948 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:01:09,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9387 Valid, 5948 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:01:09,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3899 states. [2021-11-23 14:01:10,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3899 to 3092. [2021-11-23 14:01:10,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.7300970873786408) internal successors, (5346), 3091 states have internal predecessors, (5346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:10,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5346 transitions. [2021-11-23 14:01:10,145 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5346 transitions. Word has length 88 [2021-11-23 14:01:10,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:01:10,146 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5346 transitions. [2021-11-23 14:01:10,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:10,147 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5346 transitions. [2021-11-23 14:01:10,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 14:01:10,149 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:01:10,149 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] [2021-11-23 14:01:10,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 14:01:10,150 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:01:10,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:01:10,150 INFO L85 PathProgramCache]: Analyzing trace with hash -628218421, now seen corresponding path program 1 times [2021-11-23 14:01:10,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:01:10,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547365583] [2021-11-23 14:01:10,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:01:10,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:01:10,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:01:10,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:01:10,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:01:10,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547365583] [2021-11-23 14:01:10,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547365583] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:01:10,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:01:10,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 14:01:10,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935725617] [2021-11-23 14:01:10,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:01:10,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 14:01:10,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:01:10,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 14:01:10,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:01:10,211 INFO L87 Difference]: Start difference. First operand 3092 states and 5346 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:10,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:01:10,841 INFO L93 Difference]: Finished difference Result 5783 states and 9184 transitions. [2021-11-23 14:01:10,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:01:10,842 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-11-23 14:01:10,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:01:10,858 INFO L225 Difference]: With dead ends: 5783 [2021-11-23 14:01:10,858 INFO L226 Difference]: Without dead ends: 4842 [2021-11-23 14:01:10,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 14:01:10,864 INFO L933 BasicCegarLoop]: 5400 mSDtfsCounter, 2362 mSDsluCounter, 15339 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2362 SdHoareTripleChecker+Valid, 20739 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:01:10,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2362 Valid, 20739 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:01:10,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4842 states. [2021-11-23 14:01:11,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4842 to 3140. [2021-11-23 14:01:11,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3140 states, 3138 states have (on average 1.7189292543021033) internal successors, (5394), 3139 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:11,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3140 states to 3140 states and 5394 transitions. [2021-11-23 14:01:11,189 INFO L78 Accepts]: Start accepts. Automaton has 3140 states and 5394 transitions. Word has length 88 [2021-11-23 14:01:11,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:01:11,189 INFO L470 AbstractCegarLoop]: Abstraction has 3140 states and 5394 transitions. [2021-11-23 14:01:11,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:11,190 INFO L276 IsEmpty]: Start isEmpty. Operand 3140 states and 5394 transitions. [2021-11-23 14:01:11,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 14:01:11,200 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:01:11,200 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] [2021-11-23 14:01:11,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 14:01:11,201 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:01:11,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:01:11,201 INFO L85 PathProgramCache]: Analyzing trace with hash -67518643, now seen corresponding path program 1 times [2021-11-23 14:01:11,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:01:11,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136063636] [2021-11-23 14:01:11,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:01:11,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:01:11,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:01:11,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:01:11,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:01:11,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136063636] [2021-11-23 14:01:11,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136063636] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:01:11,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:01:11,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:01:11,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289326123] [2021-11-23 14:01:11,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:01:11,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 14:01:11,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:01:11,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 14:01:11,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 14:01:11,250 INFO L87 Difference]: Start difference. First operand 3140 states and 5394 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:11,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:01:11,841 INFO L93 Difference]: Finished difference Result 5795 states and 9126 transitions. [2021-11-23 14:01:11,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 14:01:11,842 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-11-23 14:01:11,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:01:11,859 INFO L225 Difference]: With dead ends: 5795 [2021-11-23 14:01:11,859 INFO L226 Difference]: Without dead ends: 4801 [2021-11-23 14:01:11,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:01:11,866 INFO L933 BasicCegarLoop]: 4785 mSDtfsCounter, 9819 mSDsluCounter, 1558 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9819 SdHoareTripleChecker+Valid, 6343 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:01:11,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9819 Valid, 6343 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:01:11,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4801 states. [2021-11-23 14:01:12,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4801 to 4639. [2021-11-23 14:01:12,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4639 states, 4637 states have (on average 1.6094457623463445) internal successors, (7463), 4638 states have internal predecessors, (7463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:12,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4639 states to 4639 states and 7463 transitions. [2021-11-23 14:01:12,329 INFO L78 Accepts]: Start accepts. Automaton has 4639 states and 7463 transitions. Word has length 88 [2021-11-23 14:01:12,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:01:12,330 INFO L470 AbstractCegarLoop]: Abstraction has 4639 states and 7463 transitions. [2021-11-23 14:01:12,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:12,331 INFO L276 IsEmpty]: Start isEmpty. Operand 4639 states and 7463 transitions. [2021-11-23 14:01:12,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-23 14:01:12,334 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:01:12,334 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 14:01:12,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 14:01:12,335 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:01:12,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:01:12,335 INFO L85 PathProgramCache]: Analyzing trace with hash -550195603, now seen corresponding path program 1 times [2021-11-23 14:01:12,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:01:12,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308628329] [2021-11-23 14:01:12,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:01:12,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:01:12,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:01:12,412 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 14:01:12,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:01:12,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308628329] [2021-11-23 14:01:12,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308628329] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:01:12,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:01:12,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 14:01:12,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178675376] [2021-11-23 14:01:12,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:01:12,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 14:01:12,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:01:12,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 14:01:12,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:01:12,416 INFO L87 Difference]: Start difference. First operand 4639 states and 7463 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:13,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:01:13,098 INFO L93 Difference]: Finished difference Result 8711 states and 13164 transitions. [2021-11-23 14:01:13,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:01:13,099 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 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 [2021-11-23 14:01:13,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:01:13,119 INFO L225 Difference]: With dead ends: 8711 [2021-11-23 14:01:13,119 INFO L226 Difference]: Without dead ends: 6228 [2021-11-23 14:01:13,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 14:01:13,127 INFO L933 BasicCegarLoop]: 4792 mSDtfsCounter, 2398 mSDsluCounter, 14735 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2398 SdHoareTripleChecker+Valid, 19527 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:01:13,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2398 Valid, 19527 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:01:13,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6228 states. [2021-11-23 14:01:13,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6228 to 4684. [2021-11-23 14:01:13,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4684 states, 4682 states have (on average 1.5982486117044) internal successors, (7483), 4683 states have internal predecessors, (7483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:13,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4684 states to 4684 states and 7483 transitions. [2021-11-23 14:01:13,455 INFO L78 Accepts]: Start accepts. Automaton has 4684 states and 7483 transitions. Word has length 105 [2021-11-23 14:01:13,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:01:13,456 INFO L470 AbstractCegarLoop]: Abstraction has 4684 states and 7483 transitions. [2021-11-23 14:01:13,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:13,456 INFO L276 IsEmpty]: Start isEmpty. Operand 4684 states and 7483 transitions. [2021-11-23 14:01:13,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-23 14:01:13,459 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:01:13,459 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 14:01:13,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 14:01:13,460 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:01:13,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:01:13,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1358262187, now seen corresponding path program 1 times [2021-11-23 14:01:13,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:01:13,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760703313] [2021-11-23 14:01:13,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:01:13,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:01:13,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:01:13,508 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 14:01:13,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:01:13,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760703313] [2021-11-23 14:01:13,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760703313] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:01:13,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:01:13,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 14:01:13,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002593236] [2021-11-23 14:01:13,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:01:13,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 14:01:13,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:01:13,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 14:01:13,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:01:13,512 INFO L87 Difference]: Start difference. First operand 4684 states and 7483 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:14,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:01:14,060 INFO L93 Difference]: Finished difference Result 7939 states and 11945 transitions. [2021-11-23 14:01:14,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:01:14,061 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 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 [2021-11-23 14:01:14,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:01:14,076 INFO L225 Difference]: With dead ends: 7939 [2021-11-23 14:01:14,076 INFO L226 Difference]: Without dead ends: 5418 [2021-11-23 14:01:14,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 14:01:14,085 INFO L933 BasicCegarLoop]: 4764 mSDtfsCounter, 1944 mSDsluCounter, 13226 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1944 SdHoareTripleChecker+Valid, 17990 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:01:14,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1944 Valid, 17990 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:01:14,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5418 states. [2021-11-23 14:01:14,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5418 to 4690. [2021-11-23 14:01:14,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4690 states, 4688 states have (on average 1.589377133105802) internal successors, (7451), 4689 states have internal predecessors, (7451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:14,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4690 states to 4690 states and 7451 transitions. [2021-11-23 14:01:14,557 INFO L78 Accepts]: Start accepts. Automaton has 4690 states and 7451 transitions. Word has length 105 [2021-11-23 14:01:14,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:01:14,558 INFO L470 AbstractCegarLoop]: Abstraction has 4690 states and 7451 transitions. [2021-11-23 14:01:14,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:14,558 INFO L276 IsEmpty]: Start isEmpty. Operand 4690 states and 7451 transitions. [2021-11-23 14:01:14,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-23 14:01:14,561 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:01:14,561 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 14:01:14,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-23 14:01:14,562 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:01:14,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:01:14,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1303869289, now seen corresponding path program 1 times [2021-11-23 14:01:14,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:01:14,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447450551] [2021-11-23 14:01:14,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:01:14,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:01:14,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:01:14,600 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 14:01:14,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:01:14,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447450551] [2021-11-23 14:01:14,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447450551] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:01:14,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:01:14,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 14:01:14,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603039322] [2021-11-23 14:01:14,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:01:14,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:01:14,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:01:14,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:01:14,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:01:14,603 INFO L87 Difference]: Start difference. First operand 4690 states and 7451 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:15,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:01:15,216 INFO L93 Difference]: Finished difference Result 9384 states and 13844 transitions. [2021-11-23 14:01:15,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:01:15,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 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 [2021-11-23 14:01:15,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:01:15,238 INFO L225 Difference]: With dead ends: 9384 [2021-11-23 14:01:15,239 INFO L226 Difference]: Without dead ends: 6866 [2021-11-23 14:01:15,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:01:15,247 INFO L933 BasicCegarLoop]: 4710 mSDtfsCounter, 4588 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4588 SdHoareTripleChecker+Valid, 5353 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:01:15,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4588 Valid, 5353 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:01:15,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6866 states. [2021-11-23 14:01:15,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6866 to 6852. [2021-11-23 14:01:15,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6852 states, 6850 states have (on average 1.5125547445255474) internal successors, (10361), 6851 states have internal predecessors, (10361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:15,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6852 states to 6852 states and 10361 transitions. [2021-11-23 14:01:15,851 INFO L78 Accepts]: Start accepts. Automaton has 6852 states and 10361 transitions. Word has length 105 [2021-11-23 14:01:15,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:01:15,851 INFO L470 AbstractCegarLoop]: Abstraction has 6852 states and 10361 transitions. [2021-11-23 14:01:15,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:15,852 INFO L276 IsEmpty]: Start isEmpty. Operand 6852 states and 10361 transitions. [2021-11-23 14:01:15,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-23 14:01:15,854 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:01:15,855 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 14:01:15,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-23 14:01:15,855 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:01:15,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:01:15,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1311619848, now seen corresponding path program 1 times [2021-11-23 14:01:15,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:01:15,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549015118] [2021-11-23 14:01:15,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:01:15,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:01:15,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:01:15,917 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 14:01:15,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:01:15,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549015118] [2021-11-23 14:01:15,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549015118] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:01:15,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:01:15,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 14:01:15,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524208197] [2021-11-23 14:01:15,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:01:15,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 14:01:15,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:01:15,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 14:01:15,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:01:15,921 INFO L87 Difference]: Start difference. First operand 6852 states and 10361 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:17,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:01:17,071 INFO L93 Difference]: Finished difference Result 14967 states and 21450 transitions. [2021-11-23 14:01:17,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:01:17,072 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 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 [2021-11-23 14:01:17,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:01:17,101 INFO L225 Difference]: With dead ends: 14967 [2021-11-23 14:01:17,101 INFO L226 Difference]: Without dead ends: 10291 [2021-11-23 14:01:17,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 14:01:17,113 INFO L933 BasicCegarLoop]: 4720 mSDtfsCounter, 1861 mSDsluCounter, 14430 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1861 SdHoareTripleChecker+Valid, 19150 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:01:17,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1861 Valid, 19150 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:01:17,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10291 states. [2021-11-23 14:01:17,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10291 to 6969. [2021-11-23 14:01:17,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6969 states, 6967 states have (on average 1.4990670302856324) internal successors, (10444), 6968 states have internal predecessors, (10444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:17,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6969 states to 6969 states and 10444 transitions. [2021-11-23 14:01:17,745 INFO L78 Accepts]: Start accepts. Automaton has 6969 states and 10444 transitions. Word has length 105 [2021-11-23 14:01:17,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:01:17,745 INFO L470 AbstractCegarLoop]: Abstraction has 6969 states and 10444 transitions. [2021-11-23 14:01:17,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:17,746 INFO L276 IsEmpty]: Start isEmpty. Operand 6969 states and 10444 transitions. [2021-11-23 14:01:17,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-23 14:01:17,749 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:01:17,749 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 14:01:17,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-23 14:01:17,749 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:01:17,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:01:17,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1445007418, now seen corresponding path program 1 times [2021-11-23 14:01:17,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:01:17,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968476909] [2021-11-23 14:01:17,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:01:17,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:01:17,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:01:17,794 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 14:01:17,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:01:17,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968476909] [2021-11-23 14:01:17,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968476909] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:01:17,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:01:17,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 14:01:17,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324266293] [2021-11-23 14:01:17,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:01:17,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 14:01:17,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:01:17,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 14:01:17,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:01:17,798 INFO L87 Difference]: Start difference. First operand 6969 states and 10444 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:19,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:01:19,175 INFO L93 Difference]: Finished difference Result 17886 states and 25221 transitions. [2021-11-23 14:01:19,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:01:19,175 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 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 [2021-11-23 14:01:19,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:01:19,219 INFO L225 Difference]: With dead ends: 17886 [2021-11-23 14:01:19,219 INFO L226 Difference]: Without dead ends: 13100 [2021-11-23 14:01:19,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 14:01:19,231 INFO L933 BasicCegarLoop]: 4765 mSDtfsCounter, 1672 mSDsluCounter, 14512 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1672 SdHoareTripleChecker+Valid, 19277 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 14:01:19,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1672 Valid, 19277 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 14:01:19,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13100 states. [2021-11-23 14:01:20,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13100 to 7188. [2021-11-23 14:01:20,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7188 states, 7186 states have (on average 1.4838575006957975) internal successors, (10663), 7187 states have internal predecessors, (10663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:20,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7188 states to 7188 states and 10663 transitions. [2021-11-23 14:01:20,102 INFO L78 Accepts]: Start accepts. Automaton has 7188 states and 10663 transitions. Word has length 105 [2021-11-23 14:01:20,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:01:20,103 INFO L470 AbstractCegarLoop]: Abstraction has 7188 states and 10663 transitions. [2021-11-23 14:01:20,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:20,103 INFO L276 IsEmpty]: Start isEmpty. Operand 7188 states and 10663 transitions. [2021-11-23 14:01:20,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-23 14:01:20,106 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:01:20,106 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 14:01:20,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-23 14:01:20,107 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:01:20,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:01:20,108 INFO L85 PathProgramCache]: Analyzing trace with hash 483265284, now seen corresponding path program 1 times [2021-11-23 14:01:20,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:01:20,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248687940] [2021-11-23 14:01:20,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:01:20,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:01:20,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:01:20,158 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 14:01:20,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:01:20,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248687940] [2021-11-23 14:01:20,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248687940] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:01:20,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:01:20,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:01:20,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850829374] [2021-11-23 14:01:20,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:01:20,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 14:01:20,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:01:20,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 14:01:20,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 14:01:20,163 INFO L87 Difference]: Start difference. First operand 7188 states and 10663 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:20,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:01:20,869 INFO L93 Difference]: Finished difference Result 12185 states and 17283 transitions. [2021-11-23 14:01:20,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:01:20,870 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 [2021-11-23 14:01:20,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:01:20,897 INFO L225 Difference]: With dead ends: 12185 [2021-11-23 14:01:20,897 INFO L226 Difference]: Without dead ends: 7188 [2021-11-23 14:01:20,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:01:20,908 INFO L933 BasicCegarLoop]: 4707 mSDtfsCounter, 9369 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9369 SdHoareTripleChecker+Valid, 4707 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:01:20,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9369 Valid, 4707 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:01:20,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7188 states. [2021-11-23 14:01:21,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7188 to 7188. [2021-11-23 14:01:21,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7188 states, 7186 states have (on average 1.4803785137767882) internal successors, (10638), 7187 states have internal predecessors, (10638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:21,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7188 states to 7188 states and 10638 transitions. [2021-11-23 14:01:21,465 INFO L78 Accepts]: Start accepts. Automaton has 7188 states and 10638 transitions. Word has length 105 [2021-11-23 14:01:21,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:01:21,465 INFO L470 AbstractCegarLoop]: Abstraction has 7188 states and 10638 transitions. [2021-11-23 14:01:21,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:21,465 INFO L276 IsEmpty]: Start isEmpty. Operand 7188 states and 10638 transitions. [2021-11-23 14:01:21,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-23 14:01:21,467 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:01:21,468 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 14:01:21,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-23 14:01:21,468 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:01:21,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:01:21,469 INFO L85 PathProgramCache]: Analyzing trace with hash 906912006, now seen corresponding path program 1 times [2021-11-23 14:01:21,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:01:21,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989825900] [2021-11-23 14:01:21,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:01:21,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:01:21,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:01:21,507 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 14:01:21,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:01:21,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989825900] [2021-11-23 14:01:21,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989825900] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:01:21,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:01:21,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:01:21,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351081110] [2021-11-23 14:01:21,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:01:21,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 14:01:21,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:01:21,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 14:01:21,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 14:01:21,510 INFO L87 Difference]: Start difference. First operand 7188 states and 10638 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:22,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:01:22,038 INFO L93 Difference]: Finished difference Result 12184 states and 17232 transitions. [2021-11-23 14:01:22,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:01:22,039 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 [2021-11-23 14:01:22,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:01:22,054 INFO L225 Difference]: With dead ends: 12184 [2021-11-23 14:01:22,055 INFO L226 Difference]: Without dead ends: 7188 [2021-11-23 14:01:22,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:01:22,066 INFO L933 BasicCegarLoop]: 4704 mSDtfsCounter, 9362 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9362 SdHoareTripleChecker+Valid, 4704 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:01:22,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9362 Valid, 4704 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:01:22,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7188 states. [2021-11-23 14:01:22,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7188 to 7188. [2021-11-23 14:01:22,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7188 states, 7186 states have (on average 1.476899526857779) internal successors, (10613), 7187 states have internal predecessors, (10613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:22,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7188 states to 7188 states and 10613 transitions. [2021-11-23 14:01:22,877 INFO L78 Accepts]: Start accepts. Automaton has 7188 states and 10613 transitions. Word has length 105 [2021-11-23 14:01:22,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:01:22,878 INFO L470 AbstractCegarLoop]: Abstraction has 7188 states and 10613 transitions. [2021-11-23 14:01:22,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:22,878 INFO L276 IsEmpty]: Start isEmpty. Operand 7188 states and 10613 transitions. [2021-11-23 14:01:22,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-23 14:01:22,881 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:01:22,881 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 14:01:22,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-23 14:01:22,881 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:01:22,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:01:22,882 INFO L85 PathProgramCache]: Analyzing trace with hash -464895292, now seen corresponding path program 1 times [2021-11-23 14:01:22,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:01:22,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377762189] [2021-11-23 14:01:22,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:01:22,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:01:22,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:01:22,934 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 14:01:22,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:01:22,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377762189] [2021-11-23 14:01:22,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377762189] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:01:22,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:01:22,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:01:22,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536390997] [2021-11-23 14:01:22,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:01:22,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 14:01:22,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:01:22,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 14:01:22,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 14:01:22,937 INFO L87 Difference]: Start difference. First operand 7188 states and 10613 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:24,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:01:24,052 INFO L93 Difference]: Finished difference Result 17965 states and 24700 transitions. [2021-11-23 14:01:24,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 14:01:24,052 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 [2021-11-23 14:01:24,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:01:24,072 INFO L225 Difference]: With dead ends: 17965 [2021-11-23 14:01:24,072 INFO L226 Difference]: Without dead ends: 12970 [2021-11-23 14:01:24,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:01:24,085 INFO L933 BasicCegarLoop]: 4900 mSDtfsCounter, 9890 mSDsluCounter, 919 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9890 SdHoareTripleChecker+Valid, 5819 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:01:24,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9890 Valid, 5819 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:01:24,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12970 states. [2021-11-23 14:01:24,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12970 to 7975. [2021-11-23 14:01:24,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7975 states, 7973 states have (on average 1.4472595008152516) internal successors, (11539), 7974 states have internal predecessors, (11539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:25,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7975 states to 7975 states and 11539 transitions. [2021-11-23 14:01:25,099 INFO L78 Accepts]: Start accepts. Automaton has 7975 states and 11539 transitions. Word has length 105 [2021-11-23 14:01:25,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:01:25,100 INFO L470 AbstractCegarLoop]: Abstraction has 7975 states and 11539 transitions. [2021-11-23 14:01:25,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:25,100 INFO L276 IsEmpty]: Start isEmpty. Operand 7975 states and 11539 transitions. [2021-11-23 14:01:25,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-23 14:01:25,104 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:01:25,105 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 14:01:25,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-23 14:01:25,105 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:01:25,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:01:25,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1984704838, now seen corresponding path program 1 times [2021-11-23 14:01:25,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:01:25,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043901360] [2021-11-23 14:01:25,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:01:25,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:01:25,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:01:25,177 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 14:01:25,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:01:25,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043901360] [2021-11-23 14:01:25,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043901360] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:01:25,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:01:25,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:01:25,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782887316] [2021-11-23 14:01:25,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:01:25,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 14:01:25,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:01:25,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 14:01:25,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 14:01:25,181 INFO L87 Difference]: Start difference. First operand 7975 states and 11539 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:26,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:01:26,456 INFO L93 Difference]: Finished difference Result 18889 states and 25695 transitions. [2021-11-23 14:01:26,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 14:01:26,457 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 [2021-11-23 14:01:26,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:01:26,476 INFO L225 Difference]: With dead ends: 18889 [2021-11-23 14:01:26,476 INFO L226 Difference]: Without dead ends: 13163 [2021-11-23 14:01:26,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:01:26,485 INFO L933 BasicCegarLoop]: 4733 mSDtfsCounter, 9840 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9840 SdHoareTripleChecker+Valid, 5468 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:01:26,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9840 Valid, 5468 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:01:26,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13163 states. [2021-11-23 14:01:27,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13163 to 7819. [2021-11-23 14:01:27,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7819 states, 7817 states have (on average 1.4396827427401817) internal successors, (11254), 7818 states have internal predecessors, (11254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:27,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7819 states to 7819 states and 11254 transitions. [2021-11-23 14:01:27,133 INFO L78 Accepts]: Start accepts. Automaton has 7819 states and 11254 transitions. Word has length 105 [2021-11-23 14:01:27,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:01:27,133 INFO L470 AbstractCegarLoop]: Abstraction has 7819 states and 11254 transitions. [2021-11-23 14:01:27,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:27,134 INFO L276 IsEmpty]: Start isEmpty. Operand 7819 states and 11254 transitions. [2021-11-23 14:01:27,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-23 14:01:27,137 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:01:27,137 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 14:01:27,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-23 14:01:27,138 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:01:27,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:01:27,138 INFO L85 PathProgramCache]: Analyzing trace with hash 955345540, now seen corresponding path program 1 times [2021-11-23 14:01:27,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:01:27,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439201872] [2021-11-23 14:01:27,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:01:27,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:01:27,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:01:27,191 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 14:01:27,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:01:27,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439201872] [2021-11-23 14:01:27,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439201872] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:01:27,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:01:27,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:01:27,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850507826] [2021-11-23 14:01:27,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:01:27,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 14:01:27,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:01:27,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 14:01:27,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 14:01:27,194 INFO L87 Difference]: Start difference. First operand 7819 states and 11254 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:28,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:01:28,339 INFO L93 Difference]: Finished difference Result 18730 states and 25266 transitions. [2021-11-23 14:01:28,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 14:01:28,340 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 [2021-11-23 14:01:28,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:01:28,357 INFO L225 Difference]: With dead ends: 18730 [2021-11-23 14:01:28,357 INFO L226 Difference]: Without dead ends: 13107 [2021-11-23 14:01:28,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:01:28,366 INFO L933 BasicCegarLoop]: 4694 mSDtfsCounter, 9785 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9785 SdHoareTripleChecker+Valid, 5391 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:01:28,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9785 Valid, 5391 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:01:28,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13107 states. [2021-11-23 14:01:28,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13107 to 7819. [2021-11-23 14:01:28,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7819 states, 7817 states have (on average 1.4270180376103365) internal successors, (11155), 7818 states have internal predecessors, (11155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:28,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7819 states to 7819 states and 11155 transitions. [2021-11-23 14:01:28,973 INFO L78 Accepts]: Start accepts. Automaton has 7819 states and 11155 transitions. Word has length 105 [2021-11-23 14:01:28,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:01:28,974 INFO L470 AbstractCegarLoop]: Abstraction has 7819 states and 11155 transitions. [2021-11-23 14:01:28,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:28,974 INFO L276 IsEmpty]: Start isEmpty. Operand 7819 states and 11155 transitions. [2021-11-23 14:01:28,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-23 14:01:28,976 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:01:28,976 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 14:01:28,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-23 14:01:28,977 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:01:28,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:01:28,978 INFO L85 PathProgramCache]: Analyzing trace with hash 111340038, now seen corresponding path program 1 times [2021-11-23 14:01:28,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:01:28,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708708323] [2021-11-23 14:01:28,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:01:28,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:01:28,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:01:29,018 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 14:01:29,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:01:29,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708708323] [2021-11-23 14:01:29,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708708323] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:01:29,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:01:29,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:01:29,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845790096] [2021-11-23 14:01:29,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:01:29,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 14:01:29,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:01:29,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 14:01:29,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 14:01:29,021 INFO L87 Difference]: Start difference. First operand 7819 states and 11155 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:30,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:01:30,349 INFO L93 Difference]: Finished difference Result 18247 states and 24366 transitions. [2021-11-23 14:01:30,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 14:01:30,350 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 [2021-11-23 14:01:30,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:01:30,367 INFO L225 Difference]: With dead ends: 18247 [2021-11-23 14:01:30,367 INFO L226 Difference]: Without dead ends: 12681 [2021-11-23 14:01:30,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:01:30,376 INFO L933 BasicCegarLoop]: 4667 mSDtfsCounter, 9726 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9726 SdHoareTripleChecker+Valid, 5336 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:01:30,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9726 Valid, 5336 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:01:30,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12681 states. [2021-11-23 14:01:30,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12681 to 7702. [2021-11-23 14:01:30,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7702 states, 7700 states have (on average 1.4201298701298701) internal successors, (10935), 7701 states have internal predecessors, (10935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:30,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7702 states to 7702 states and 10935 transitions. [2021-11-23 14:01:30,973 INFO L78 Accepts]: Start accepts. Automaton has 7702 states and 10935 transitions. Word has length 105 [2021-11-23 14:01:30,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:01:30,974 INFO L470 AbstractCegarLoop]: Abstraction has 7702 states and 10935 transitions. [2021-11-23 14:01:30,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:30,974 INFO L276 IsEmpty]: Start isEmpty. Operand 7702 states and 10935 transitions. [2021-11-23 14:01:30,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-23 14:01:30,975 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:01:30,975 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 14:01:30,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-23 14:01:30,976 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:01:30,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:01:30,976 INFO L85 PathProgramCache]: Analyzing trace with hash -2132643260, now seen corresponding path program 1 times [2021-11-23 14:01:30,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:01:30,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977252085] [2021-11-23 14:01:30,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:01:30,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:01:30,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:01:31,018 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 14:01:31,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:01:31,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977252085] [2021-11-23 14:01:31,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977252085] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:01:31,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:01:31,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:01:31,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546644451] [2021-11-23 14:01:31,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:01:31,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 14:01:31,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:01:31,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 14:01:31,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 14:01:31,021 INFO L87 Difference]: Start difference. First operand 7702 states and 10935 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:32,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:01:32,026 INFO L93 Difference]: Finished difference Result 15482 states and 20664 transitions. [2021-11-23 14:01:32,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 14:01:32,027 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 [2021-11-23 14:01:32,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:01:32,039 INFO L225 Difference]: With dead ends: 15482 [2021-11-23 14:01:32,039 INFO L226 Difference]: Without dead ends: 10008 [2021-11-23 14:01:32,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:01:32,045 INFO L933 BasicCegarLoop]: 4637 mSDtfsCounter, 9667 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9667 SdHoareTripleChecker+Valid, 5278 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:01:32,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9667 Valid, 5278 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:01:32,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10008 states. [2021-11-23 14:01:32,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10008 to 7462. [2021-11-23 14:01:32,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7462 states, 7460 states have (on average 1.4088471849865951) internal successors, (10510), 7461 states have internal predecessors, (10510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:32,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7462 states to 7462 states and 10510 transitions. [2021-11-23 14:01:32,813 INFO L78 Accepts]: Start accepts. Automaton has 7462 states and 10510 transitions. Word has length 105 [2021-11-23 14:01:32,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:01:32,814 INFO L470 AbstractCegarLoop]: Abstraction has 7462 states and 10510 transitions. [2021-11-23 14:01:32,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:32,814 INFO L276 IsEmpty]: Start isEmpty. Operand 7462 states and 10510 transitions. [2021-11-23 14:01:32,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-23 14:01:32,816 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:01:32,816 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 14:01:32,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-23 14:01:32,817 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:01:32,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:01:32,818 INFO L85 PathProgramCache]: Analyzing trace with hash 2089937478, now seen corresponding path program 1 times [2021-11-23 14:01:32,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:01:32,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662584569] [2021-11-23 14:01:32,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:01:32,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:01:32,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:01:32,857 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:01:32,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:01:32,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662584569] [2021-11-23 14:01:32,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662584569] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:01:32,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:01:32,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:01:32,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382940484] [2021-11-23 14:01:32,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:01:32,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:01:32,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:01:32,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:01:32,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:01:32,860 INFO L87 Difference]: Start difference. First operand 7462 states and 10510 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) [2021-11-23 14:01:33,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:01:33,933 INFO L93 Difference]: Finished difference Result 17401 states and 22578 transitions. [2021-11-23 14:01:33,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:01:33,933 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 [2021-11-23 14:01:33,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:01:33,948 INFO L225 Difference]: With dead ends: 17401 [2021-11-23 14:01:33,948 INFO L226 Difference]: Without dead ends: 12188 [2021-11-23 14:01:33,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:01:33,955 INFO L933 BasicCegarLoop]: 4645 mSDtfsCounter, 4472 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4472 SdHoareTripleChecker+Valid, 5318 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:01:33,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4472 Valid, 5318 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:01:33,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12188 states. [2021-11-23 14:01:35,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12188 to 12188. [2021-11-23 14:01:35,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12188 states, 12186 states have (on average 1.3230756605941245) internal successors, (16123), 12187 states have internal predecessors, (16123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:35,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12188 states to 12188 states and 16123 transitions. [2021-11-23 14:01:35,060 INFO L78 Accepts]: Start accepts. Automaton has 12188 states and 16123 transitions. Word has length 105 [2021-11-23 14:01:35,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:01:35,061 INFO L470 AbstractCegarLoop]: Abstraction has 12188 states and 16123 transitions. [2021-11-23 14:01:35,061 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) [2021-11-23 14:01:35,061 INFO L276 IsEmpty]: Start isEmpty. Operand 12188 states and 16123 transitions. [2021-11-23 14:01:35,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-23 14:01:35,064 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:01:35,065 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 14:01:35,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-23 14:01:35,065 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:01:35,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:01:35,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1796958080, now seen corresponding path program 1 times [2021-11-23 14:01:35,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:01:35,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551089873] [2021-11-23 14:01:35,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:01:35,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:01:35,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:01:35,107 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:01:35,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:01:35,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551089873] [2021-11-23 14:01:35,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551089873] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:01:35,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:01:35,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:01:35,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792687223] [2021-11-23 14:01:35,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:01:35,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:01:35,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:01:35,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:01:35,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:01:35,111 INFO L87 Difference]: Start difference. First operand 12188 states and 16123 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) [2021-11-23 14:01:37,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:01:37,021 INFO L93 Difference]: Finished difference Result 30766 states and 38507 transitions. [2021-11-23 14:01:37,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:01:37,021 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 [2021-11-23 14:01:37,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:01:37,060 INFO L225 Difference]: With dead ends: 30766 [2021-11-23 14:01:37,061 INFO L226 Difference]: Without dead ends: 20950 [2021-11-23 14:01:37,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:01:37,076 INFO L933 BasicCegarLoop]: 4900 mSDtfsCounter, 4479 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4479 SdHoareTripleChecker+Valid, 5569 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:01:37,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4479 Valid, 5569 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:01:37,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20950 states. [2021-11-23 14:01:39,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20950 to 20948. [2021-11-23 14:01:39,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20948 states, 20946 states have (on average 1.2682612431967917) internal successors, (26565), 20947 states have internal predecessors, (26565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:39,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20948 states to 20948 states and 26565 transitions. [2021-11-23 14:01:39,263 INFO L78 Accepts]: Start accepts. Automaton has 20948 states and 26565 transitions. Word has length 106 [2021-11-23 14:01:39,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:01:39,263 INFO L470 AbstractCegarLoop]: Abstraction has 20948 states and 26565 transitions. [2021-11-23 14:01:39,263 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) [2021-11-23 14:01:39,264 INFO L276 IsEmpty]: Start isEmpty. Operand 20948 states and 26565 transitions. [2021-11-23 14:01:39,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-23 14:01:39,270 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:01:39,270 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 14:01:39,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-23 14:01:39,271 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:01:39,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:01:39,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1466968318, now seen corresponding path program 1 times [2021-11-23 14:01:39,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:01:39,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794857749] [2021-11-23 14:01:39,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:01:39,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:01:39,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:01:39,296 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-23 14:01:39,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:01:39,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794857749] [2021-11-23 14:01:39,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794857749] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:01:39,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:01:39,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:01:39,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887814659] [2021-11-23 14:01:39,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:01:39,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:01:39,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:01:39,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:01:39,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:01:39,299 INFO L87 Difference]: Start difference. First operand 20948 states and 26565 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:41,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:01:41,388 INFO L93 Difference]: Finished difference Result 39282 states and 48618 transitions. [2021-11-23 14:01:41,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:01:41,388 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 [2021-11-23 14:01:41,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:01:41,416 INFO L225 Difference]: With dead ends: 39282 [2021-11-23 14:01:41,417 INFO L226 Difference]: Without dead ends: 20706 [2021-11-23 14:01:41,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:01:41,433 INFO L933 BasicCegarLoop]: 4647 mSDtfsCounter, 684 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 8605 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:01:41,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [684 Valid, 8605 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:01:41,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20706 states. [2021-11-23 14:01:43,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20706 to 20706. [2021-11-23 14:01:43,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20706 states, 20704 states have (on average 1.2699478361669243) internal successors, (26293), 20705 states have internal predecessors, (26293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:43,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20706 states to 20706 states and 26293 transitions. [2021-11-23 14:01:43,755 INFO L78 Accepts]: Start accepts. Automaton has 20706 states and 26293 transitions. Word has length 106 [2021-11-23 14:01:43,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:01:43,755 INFO L470 AbstractCegarLoop]: Abstraction has 20706 states and 26293 transitions. [2021-11-23 14:01:43,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:43,755 INFO L276 IsEmpty]: Start isEmpty. Operand 20706 states and 26293 transitions. [2021-11-23 14:01:43,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-23 14:01:43,759 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:01:43,759 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 14:01:43,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-23 14:01:43,760 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:01:43,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:01:43,761 INFO L85 PathProgramCache]: Analyzing trace with hash 245909340, now seen corresponding path program 1 times [2021-11-23 14:01:43,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:01:43,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110444228] [2021-11-23 14:01:43,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:01:43,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:01:43,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:01:43,800 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:01:43,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:01:43,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110444228] [2021-11-23 14:01:43,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110444228] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:01:43,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:01:43,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:01:43,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379462161] [2021-11-23 14:01:43,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:01:43,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:01:43,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:01:43,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:01:43,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:01:43,803 INFO L87 Difference]: Start difference. First operand 20706 states and 26293 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) [2021-11-23 14:01:47,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:01:47,339 INFO L93 Difference]: Finished difference Result 56006 states and 68617 transitions. [2021-11-23 14:01:47,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:01:47,339 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 [2021-11-23 14:01:47,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:01:47,390 INFO L225 Difference]: With dead ends: 56006 [2021-11-23 14:01:47,390 INFO L226 Difference]: Without dead ends: 37672 [2021-11-23 14:01:47,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:01:47,410 INFO L933 BasicCegarLoop]: 4815 mSDtfsCounter, 4495 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4495 SdHoareTripleChecker+Valid, 5474 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:01:47,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4495 Valid, 5474 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:01:47,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37672 states. [2021-11-23 14:01:51,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37672 to 36758. [2021-11-23 14:01:51,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36758 states, 36756 states have (on average 1.2364511916421808) internal successors, (45447), 36757 states have internal predecessors, (45447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:51,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36758 states to 36758 states and 45447 transitions. [2021-11-23 14:01:51,132 INFO L78 Accepts]: Start accepts. Automaton has 36758 states and 45447 transitions. Word has length 107 [2021-11-23 14:01:51,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:01:51,133 INFO L470 AbstractCegarLoop]: Abstraction has 36758 states and 45447 transitions. [2021-11-23 14:01:51,133 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) [2021-11-23 14:01:51,133 INFO L276 IsEmpty]: Start isEmpty. Operand 36758 states and 45447 transitions. [2021-11-23 14:01:51,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-23 14:01:51,138 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:01:51,138 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 14:01:51,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-23 14:01:51,139 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:01:51,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:01:51,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1276950238, now seen corresponding path program 1 times [2021-11-23 14:01:51,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:01:51,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276375928] [2021-11-23 14:01:51,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:01:51,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:01:51,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:01:51,161 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-23 14:01:51,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:01:51,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276375928] [2021-11-23 14:01:51,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276375928] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:01:51,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:01:51,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:01:51,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659568263] [2021-11-23 14:01:51,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:01:51,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:01:51,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:01:51,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:01:51,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:01:51,163 INFO L87 Difference]: Start difference. First operand 36758 states and 45447 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:55,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:01:55,357 INFO L93 Difference]: Finished difference Result 70998 states and 86490 transitions. [2021-11-23 14:01:55,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:01:55,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-11-23 14:01:55,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:01:55,596 INFO L225 Difference]: With dead ends: 70998 [2021-11-23 14:01:55,596 INFO L226 Difference]: Without dead ends: 36518 [2021-11-23 14:01:55,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:01:55,619 INFO L933 BasicCegarLoop]: 4646 mSDtfsCounter, 682 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 8604 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:01:55,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [682 Valid, 8604 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:01:55,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36518 states. [2021-11-23 14:01:59,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36518 to 36518. [2021-11-23 14:01:59,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36518 states, 36516 states have (on average 1.2372384708073174) internal successors, (45179), 36517 states have internal predecessors, (45179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:59,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36518 states to 36518 states and 45179 transitions. [2021-11-23 14:01:59,459 INFO L78 Accepts]: Start accepts. Automaton has 36518 states and 45179 transitions. Word has length 107 [2021-11-23 14:01:59,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:01:59,459 INFO L470 AbstractCegarLoop]: Abstraction has 36518 states and 45179 transitions. [2021-11-23 14:01:59,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:01:59,459 INFO L276 IsEmpty]: Start isEmpty. Operand 36518 states and 45179 transitions. [2021-11-23 14:01:59,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-23 14:01:59,462 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:01:59,463 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 14:01:59,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-23 14:01:59,463 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:01:59,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:01:59,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1080773625, now seen corresponding path program 1 times [2021-11-23 14:01:59,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:01:59,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004672600] [2021-11-23 14:01:59,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:01:59,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:01:59,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:01:59,505 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:01:59,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:01:59,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004672600] [2021-11-23 14:01:59,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004672600] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:01:59,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:01:59,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:01:59,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839629660] [2021-11-23 14:01:59,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:01:59,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:01:59,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:01:59,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:01:59,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:01:59,508 INFO L87 Difference]: Start difference. First operand 36518 states and 45179 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)