./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2b6b32-6d83-44b1-9148-a72afb07e1cb/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2b6b32-6d83-44b1-9148-a72afb07e1cb/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2b6b32-6d83-44b1-9148-a72afb07e1cb/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2b6b32-6d83-44b1-9148-a72afb07e1cb/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2b6b32-6d83-44b1-9148-a72afb07e1cb/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2b6b32-6d83-44b1-9148-a72afb07e1cb/bin/uautomizer-w2VwFs6gM0 --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 4008c7bad6e9f0faf3cf745d811b7950453991ed3720a7122a910bf51077877c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:34:15,495 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:34:15,499 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:34:15,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:34:15,566 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:34:15,572 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:34:15,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:34:15,579 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:34:15,582 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:34:15,590 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:34:15,591 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:34:15,594 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:34:15,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:34:15,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:34:15,600 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:34:15,607 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:34:15,609 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:34:15,610 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:34:15,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:34:15,624 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:34:15,626 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:34:15,628 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:34:15,629 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:34:15,630 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:34:15,634 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:34:15,635 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:34:15,635 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:34:15,636 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:34:15,637 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:34:15,638 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:34:15,639 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:34:15,640 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:34:15,641 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:34:15,642 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:34:15,643 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:34:15,644 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:34:15,645 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:34:15,645 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:34:15,645 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:34:15,646 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:34:15,647 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:34:15,648 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2b6b32-6d83-44b1-9148-a72afb07e1cb/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 15:34:15,674 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:34:15,674 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:34:15,675 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:34:15,675 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:34:15,676 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:34:15,676 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:34:15,676 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:34:15,677 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:34:15,677 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:34:15,677 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:34:15,677 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:34:15,678 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:34:15,678 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 15:34:15,678 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:34:15,678 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 15:34:15,678 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:34:15,679 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:34:15,679 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:34:15,679 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 15:34:15,679 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:34:15,680 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:34:15,680 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:34:15,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:34:15,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:34:15,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:34:15,681 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 15:34:15,681 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:34:15,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 15:34:15,681 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 15:34:15,682 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 15:34:15,682 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 15:34:15,682 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:34:15,682 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_3c2b6b32-6d83-44b1-9148-a72afb07e1cb/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2b6b32-6d83-44b1-9148-a72afb07e1cb/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4008c7bad6e9f0faf3cf745d811b7950453991ed3720a7122a910bf51077877c [2021-11-22 15:34:16,023 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:34:16,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:34:16,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:34:16,068 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:34:16,069 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:34:16,071 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2b6b32-6d83-44b1-9148-a72afb07e1cb/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c [2021-11-22 15:34:16,145 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2b6b32-6d83-44b1-9148-a72afb07e1cb/bin/uautomizer-w2VwFs6gM0/data/0ae9dd241/ee077b5bc32c4da8a13806df7706ad57/FLAG3013ee4f2 [2021-11-22 15:34:16,874 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:34:16,878 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2b6b32-6d83-44b1-9148-a72afb07e1cb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c [2021-11-22 15:34:16,903 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2b6b32-6d83-44b1-9148-a72afb07e1cb/bin/uautomizer-w2VwFs6gM0/data/0ae9dd241/ee077b5bc32c4da8a13806df7706ad57/FLAG3013ee4f2 [2021-11-22 15:34:17,074 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2b6b32-6d83-44b1-9148-a72afb07e1cb/bin/uautomizer-w2VwFs6gM0/data/0ae9dd241/ee077b5bc32c4da8a13806df7706ad57 [2021-11-22 15:34:17,076 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:34:17,078 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:34:17,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:34:17,086 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:34:17,089 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:34:17,090 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:34:17" (1/1) ... [2021-11-22 15:34:17,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@168ba72f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:34:17, skipping insertion in model container [2021-11-22 15:34:17,092 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:34:17" (1/1) ... [2021-11-22 15:34:17,099 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:34:17,153 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:34:17,459 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_3c2b6b32-6d83-44b1-9148-a72afb07e1cb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c[10525,10538] [2021-11-22 15:34:17,531 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:34:17,551 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:34:17,677 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_3c2b6b32-6d83-44b1-9148-a72afb07e1cb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c[10525,10538] [2021-11-22 15:34:17,718 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:34:17,737 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:34:17,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:34:17 WrapperNode [2021-11-22 15:34:17,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:34:17,739 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:34:17,739 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:34:17,739 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:34:17,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:34:17" (1/1) ... [2021-11-22 15:34:17,762 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:34:17" (1/1) ... [2021-11-22 15:34:17,823 INFO L137 Inliner]: procedures = 26, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 841 [2021-11-22 15:34:17,823 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:34:17,824 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:34:17,824 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:34:17,825 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:34:17,833 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:34:17" (1/1) ... [2021-11-22 15:34:17,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:34:17" (1/1) ... [2021-11-22 15:34:17,839 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:34:17" (1/1) ... [2021-11-22 15:34:17,839 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:34:17" (1/1) ... [2021-11-22 15:34:17,860 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:34:17" (1/1) ... [2021-11-22 15:34:17,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:34:17" (1/1) ... [2021-11-22 15:34:17,890 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:34:17" (1/1) ... [2021-11-22 15:34:17,904 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:34:17,919 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:34:17,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:34:17,920 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:34:17,921 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:34:17" (1/1) ... [2021-11-22 15:34:17,927 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:34:17,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2b6b32-6d83-44b1-9148-a72afb07e1cb/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:34:17,950 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2b6b32-6d83-44b1-9148-a72afb07e1cb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:34:17,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2b6b32-6d83-44b1-9148-a72afb07e1cb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:34:18,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:34:18,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 15:34:18,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:34:18,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:34:18,137 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:34:18,139 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:34:19,117 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:34:19,128 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:34:19,128 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-22 15:34:19,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:34:19 BoogieIcfgContainer [2021-11-22 15:34:19,131 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:34:19,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:34:19,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:34:19,137 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:34:19,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:34:17" (1/3) ... [2021-11-22 15:34:19,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64fe024a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:34:19, skipping insertion in model container [2021-11-22 15:34:19,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:34:17" (2/3) ... [2021-11-22 15:34:19,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64fe024a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:34:19, skipping insertion in model container [2021-11-22 15:34:19,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:34:19" (3/3) ... [2021-11-22 15:34:19,141 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c [2021-11-22 15:34:19,148 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:34:19,148 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-22 15:34:19,207 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:34:19,215 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 [2021-11-22 15:34:19,215 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-22 15:34:19,240 INFO L276 IsEmpty]: Start isEmpty. Operand has 202 states, 200 states have (on average 1.765) internal successors, (353), 201 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:19,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-22 15:34:19,254 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:19,255 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:19,256 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:34:19,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:19,262 INFO L85 PathProgramCache]: Analyzing trace with hash -2055920229, now seen corresponding path program 1 times [2021-11-22 15:34:19,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:19,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619781036] [2021-11-22 15:34:19,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:19,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:19,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:19,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:19,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:19,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619781036] [2021-11-22 15:34:19,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619781036] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:19,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:19,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-22 15:34:19,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24572010] [2021-11-22 15:34:19,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:19,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 15:34:19,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:19,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 15:34:19,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:34:19,996 INFO L87 Difference]: Start difference. First operand has 202 states, 200 states have (on average 1.765) internal successors, (353), 201 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 9 states, 9 states have (on average 12.0) internal successors, (108), 9 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:20,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:20,953 INFO L93 Difference]: Finished difference Result 1459 states and 2342 transitions. [2021-11-22 15:34:20,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-22 15:34:20,956 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 9 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-22 15:34:20,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:20,982 INFO L225 Difference]: With dead ends: 1459 [2021-11-22 15:34:20,982 INFO L226 Difference]: Without dead ends: 1333 [2021-11-22 15:34:20,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2021-11-22 15:34:20,992 INFO L933 BasicCegarLoop]: 868 mSDtfsCounter, 2676 mSDsluCounter, 6172 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2676 SdHoareTripleChecker+Valid, 7040 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:20,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2676 Valid, 7040 Invalid, 494 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 15:34:21,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2021-11-22 15:34:21,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 304. [2021-11-22 15:34:21,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 303 states have (on average 1.4422442244224423) internal successors, (437), 303 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:21,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 437 transitions. [2021-11-22 15:34:21,082 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 437 transitions. Word has length 108 [2021-11-22 15:34:21,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:21,083 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 437 transitions. [2021-11-22 15:34:21,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 9 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:21,084 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 437 transitions. [2021-11-22 15:34:21,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-22 15:34:21,090 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:21,090 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:21,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 15:34:21,091 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:34:21,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:21,092 INFO L85 PathProgramCache]: Analyzing trace with hash -924120728, now seen corresponding path program 1 times [2021-11-22 15:34:21,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:21,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065493040] [2021-11-22 15:34:21,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:21,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:21,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:21,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:21,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:21,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065493040] [2021-11-22 15:34:21,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065493040] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:21,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:21,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-22 15:34:21,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613501879] [2021-11-22 15:34:21,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:21,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 15:34:21,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:21,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 15:34:21,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:34:21,345 INFO L87 Difference]: Start difference. First operand 304 states and 437 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:21,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:21,841 INFO L93 Difference]: Finished difference Result 1560 states and 2419 transitions. [2021-11-22 15:34:21,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 15:34:21,842 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-22 15:34:21,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:21,851 INFO L225 Difference]: With dead ends: 1560 [2021-11-22 15:34:21,851 INFO L226 Difference]: Without dead ends: 1400 [2021-11-22 15:34:21,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-11-22 15:34:21,856 INFO L933 BasicCegarLoop]: 831 mSDtfsCounter, 1946 mSDsluCounter, 3187 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1946 SdHoareTripleChecker+Valid, 4018 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:21,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1946 Valid, 4018 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:34:21,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2021-11-22 15:34:21,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 483. [2021-11-22 15:34:21,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.495850622406639) internal successors, (721), 482 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:21,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 721 transitions. [2021-11-22 15:34:21,929 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 721 transitions. Word has length 110 [2021-11-22 15:34:21,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:21,930 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 721 transitions. [2021-11-22 15:34:21,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:21,931 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 721 transitions. [2021-11-22 15:34:21,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-22 15:34:21,936 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:21,936 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:21,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 15:34:21,937 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:34:21,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:21,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1292919580, now seen corresponding path program 1 times [2021-11-22 15:34:21,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:21,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066413669] [2021-11-22 15:34:21,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:21,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:21,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:22,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:22,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:22,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066413669] [2021-11-22 15:34:22,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066413669] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:22,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:22,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-22 15:34:22,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069839631] [2021-11-22 15:34:22,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:22,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 15:34:22,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:22,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 15:34:22,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:34:22,189 INFO L87 Difference]: Start difference. First operand 483 states and 721 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:22,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:22,684 INFO L93 Difference]: Finished difference Result 1739 states and 2703 transitions. [2021-11-22 15:34:22,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 15:34:22,685 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-22 15:34:22,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:22,695 INFO L225 Difference]: With dead ends: 1739 [2021-11-22 15:34:22,696 INFO L226 Difference]: Without dead ends: 1579 [2021-11-22 15:34:22,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-11-22 15:34:22,699 INFO L933 BasicCegarLoop]: 722 mSDtfsCounter, 1941 mSDsluCounter, 2345 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1941 SdHoareTripleChecker+Valid, 3067 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:22,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1941 Valid, 3067 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:34:22,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2021-11-22 15:34:22,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 741. [2021-11-22 15:34:22,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 740 states have (on average 1.527027027027027) internal successors, (1130), 740 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:22,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1130 transitions. [2021-11-22 15:34:22,804 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1130 transitions. Word has length 110 [2021-11-22 15:34:22,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:22,805 INFO L470 AbstractCegarLoop]: Abstraction has 741 states and 1130 transitions. [2021-11-22 15:34:22,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:22,805 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1130 transitions. [2021-11-22 15:34:22,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-22 15:34:22,807 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:22,808 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:22,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 15:34:22,808 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:34:22,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:22,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1295133060, now seen corresponding path program 1 times [2021-11-22 15:34:22,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:22,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050557830] [2021-11-22 15:34:22,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:22,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:22,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:22,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:22,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:22,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050557830] [2021-11-22 15:34:22,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050557830] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:22,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:22,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-22 15:34:22,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332810797] [2021-11-22 15:34:22,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:22,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 15:34:22,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:22,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 15:34:22,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:34:22,995 INFO L87 Difference]: Start difference. First operand 741 states and 1130 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:23,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:23,478 INFO L93 Difference]: Finished difference Result 1913 states and 2979 transitions. [2021-11-22 15:34:23,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 15:34:23,479 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-22 15:34:23,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:23,490 INFO L225 Difference]: With dead ends: 1913 [2021-11-22 15:34:23,490 INFO L226 Difference]: Without dead ends: 1753 [2021-11-22 15:34:23,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-11-22 15:34:23,493 INFO L933 BasicCegarLoop]: 613 mSDtfsCounter, 2145 mSDsluCounter, 2303 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2145 SdHoareTripleChecker+Valid, 2916 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:23,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2145 Valid, 2916 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:34:23,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1753 states. [2021-11-22 15:34:23,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1753 to 915. [2021-11-22 15:34:23,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 915 states, 914 states have (on average 1.538293216630197) internal successors, (1406), 914 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:23,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 1406 transitions. [2021-11-22 15:34:23,642 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 1406 transitions. Word has length 110 [2021-11-22 15:34:23,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:23,643 INFO L470 AbstractCegarLoop]: Abstraction has 915 states and 1406 transitions. [2021-11-22 15:34:23,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:23,644 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 1406 transitions. [2021-11-22 15:34:23,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-22 15:34:23,645 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:23,646 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:23,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 15:34:23,646 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:34:23,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:23,647 INFO L85 PathProgramCache]: Analyzing trace with hash 722932112, now seen corresponding path program 1 times [2021-11-22 15:34:23,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:23,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52556951] [2021-11-22 15:34:23,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:23,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:23,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:23,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:23,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:23,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52556951] [2021-11-22 15:34:23,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52556951] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:23,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:23,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-22 15:34:23,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655160563] [2021-11-22 15:34:23,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:23,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 15:34:23,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:23,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 15:34:23,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:34:23,790 INFO L87 Difference]: Start difference. First operand 915 states and 1406 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:24,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:24,246 INFO L93 Difference]: Finished difference Result 2082 states and 3247 transitions. [2021-11-22 15:34:24,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 15:34:24,247 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-22 15:34:24,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:24,258 INFO L225 Difference]: With dead ends: 2082 [2021-11-22 15:34:24,259 INFO L226 Difference]: Without dead ends: 1922 [2021-11-22 15:34:24,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-11-22 15:34:24,261 INFO L933 BasicCegarLoop]: 496 mSDtfsCounter, 2347 mSDsluCounter, 2189 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2347 SdHoareTripleChecker+Valid, 2685 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:24,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2347 Valid, 2685 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:34:24,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1922 states. [2021-11-22 15:34:24,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1922 to 1079. [2021-11-22 15:34:24,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 1078 states have (on average 1.5454545454545454) internal successors, (1666), 1078 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:24,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1666 transitions. [2021-11-22 15:34:24,406 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1666 transitions. Word has length 110 [2021-11-22 15:34:24,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:24,407 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 1666 transitions. [2021-11-22 15:34:24,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:24,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1666 transitions. [2021-11-22 15:34:24,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-22 15:34:24,409 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:24,409 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:24,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 15:34:24,410 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:34:24,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:24,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1525369156, now seen corresponding path program 1 times [2021-11-22 15:34:24,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:24,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659046749] [2021-11-22 15:34:24,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:24,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:24,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:24,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:24,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:24,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659046749] [2021-11-22 15:34:24,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659046749] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:24,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:24,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-22 15:34:24,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575873513] [2021-11-22 15:34:24,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:24,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 15:34:24,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:24,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 15:34:24,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:34:24,547 INFO L87 Difference]: Start difference. First operand 1079 states and 1666 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:25,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:25,036 INFO L93 Difference]: Finished difference Result 2241 states and 3499 transitions. [2021-11-22 15:34:25,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 15:34:25,037 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-22 15:34:25,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:25,049 INFO L225 Difference]: With dead ends: 2241 [2021-11-22 15:34:25,050 INFO L226 Difference]: Without dead ends: 2081 [2021-11-22 15:34:25,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-11-22 15:34:25,054 INFO L933 BasicCegarLoop]: 387 mSDtfsCounter, 2850 mSDsluCounter, 2185 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2850 SdHoareTripleChecker+Valid, 2572 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:25,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2850 Valid, 2572 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:34:25,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2081 states. [2021-11-22 15:34:25,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2081 to 1238. [2021-11-22 15:34:25,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 1237 states have (on average 1.5505254648342766) internal successors, (1918), 1237 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:25,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1918 transitions. [2021-11-22 15:34:25,226 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 1918 transitions. Word has length 110 [2021-11-22 15:34:25,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:25,226 INFO L470 AbstractCegarLoop]: Abstraction has 1238 states and 1918 transitions. [2021-11-22 15:34:25,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:25,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 1918 transitions. [2021-11-22 15:34:25,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-22 15:34:25,230 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:25,231 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:25,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 15:34:25,231 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:34:25,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:25,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1186267839, now seen corresponding path program 1 times [2021-11-22 15:34:25,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:25,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206283806] [2021-11-22 15:34:25,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:25,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:25,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:25,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:25,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:25,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206283806] [2021-11-22 15:34:25,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206283806] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:25,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:25,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-22 15:34:25,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146795183] [2021-11-22 15:34:25,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:25,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 15:34:25,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:25,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 15:34:25,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:34:25,554 INFO L87 Difference]: Start difference. First operand 1238 states and 1918 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:26,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:26,187 INFO L93 Difference]: Finished difference Result 2269 states and 3552 transitions. [2021-11-22 15:34:26,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 15:34:26,188 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-22 15:34:26,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:26,196 INFO L225 Difference]: With dead ends: 2269 [2021-11-22 15:34:26,198 INFO L226 Difference]: Without dead ends: 1240 [2021-11-22 15:34:26,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2021-11-22 15:34:26,204 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 677 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 677 SdHoareTripleChecker+Valid, 1394 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:26,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [677 Valid, 1394 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:34:26,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2021-11-22 15:34:26,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1238. [2021-11-22 15:34:26,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 1237 states have (on average 1.5448666127728374) internal successors, (1911), 1237 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:26,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1911 transitions. [2021-11-22 15:34:26,355 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 1911 transitions. Word has length 110 [2021-11-22 15:34:26,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:26,355 INFO L470 AbstractCegarLoop]: Abstraction has 1238 states and 1911 transitions. [2021-11-22 15:34:26,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:26,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 1911 transitions. [2021-11-22 15:34:26,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-22 15:34:26,357 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:26,358 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:26,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 15:34:26,358 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:34:26,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:26,360 INFO L85 PathProgramCache]: Analyzing trace with hash 943143488, now seen corresponding path program 1 times [2021-11-22 15:34:26,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:26,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364988418] [2021-11-22 15:34:26,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:26,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:26,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:26,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:26,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:26,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364988418] [2021-11-22 15:34:26,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364988418] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:26,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:26,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:34:26,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627849472] [2021-11-22 15:34:26,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:26,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:34:26,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:26,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:34:26,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:34:26,423 INFO L87 Difference]: Start difference. First operand 1238 states and 1911 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:26,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:26,713 INFO L93 Difference]: Finished difference Result 3212 states and 5022 transitions. [2021-11-22 15:34:26,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:34:26,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-22 15:34:26,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:26,725 INFO L225 Difference]: With dead ends: 3212 [2021-11-22 15:34:26,726 INFO L226 Difference]: Without dead ends: 2183 [2021-11-22 15:34:26,730 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 [2021-11-22 15:34:26,731 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 115 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:26,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 640 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:34:26,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2183 states. [2021-11-22 15:34:26,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2183 to 2181. [2021-11-22 15:34:26,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2181 states, 2180 states have (on average 1.5454128440366972) internal successors, (3369), 2180 states have internal predecessors, (3369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:26,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2181 states to 2181 states and 3369 transitions. [2021-11-22 15:34:26,985 INFO L78 Accepts]: Start accepts. Automaton has 2181 states and 3369 transitions. Word has length 110 [2021-11-22 15:34:26,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:26,986 INFO L470 AbstractCegarLoop]: Abstraction has 2181 states and 3369 transitions. [2021-11-22 15:34:26,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:26,987 INFO L276 IsEmpty]: Start isEmpty. Operand 2181 states and 3369 transitions. [2021-11-22 15:34:26,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-22 15:34:26,989 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:26,989 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:26,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-22 15:34:26,989 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:34:26,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:26,990 INFO L85 PathProgramCache]: Analyzing trace with hash 2091479554, now seen corresponding path program 1 times [2021-11-22 15:34:26,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:26,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49777144] [2021-11-22 15:34:26,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:26,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:27,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:27,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:27,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:27,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49777144] [2021-11-22 15:34:27,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49777144] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:27,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:27,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-22 15:34:27,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911235759] [2021-11-22 15:34:27,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:27,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 15:34:27,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:27,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 15:34:27,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:34:27,163 INFO L87 Difference]: Start difference. First operand 2181 states and 3369 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:27,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:27,906 INFO L93 Difference]: Finished difference Result 4357 states and 6769 transitions. [2021-11-22 15:34:27,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 15:34:27,907 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-22 15:34:27,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:27,929 INFO L225 Difference]: With dead ends: 4357 [2021-11-22 15:34:27,929 INFO L226 Difference]: Without dead ends: 4052 [2021-11-22 15:34:27,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-11-22 15:34:27,934 INFO L933 BasicCegarLoop]: 488 mSDtfsCounter, 2152 mSDsluCounter, 2375 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2152 SdHoareTripleChecker+Valid, 2863 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:27,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2152 Valid, 2863 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:34:27,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4052 states. [2021-11-22 15:34:28,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4052 to 2484. [2021-11-22 15:34:28,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2484 states, 2483 states have (on average 1.5477245267821185) internal successors, (3843), 2483 states have internal predecessors, (3843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:28,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2484 states to 2484 states and 3843 transitions. [2021-11-22 15:34:28,296 INFO L78 Accepts]: Start accepts. Automaton has 2484 states and 3843 transitions. Word has length 110 [2021-11-22 15:34:28,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:28,296 INFO L470 AbstractCegarLoop]: Abstraction has 2484 states and 3843 transitions. [2021-11-22 15:34:28,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:28,297 INFO L276 IsEmpty]: Start isEmpty. Operand 2484 states and 3843 transitions. [2021-11-22 15:34:28,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-22 15:34:28,299 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:28,300 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:28,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 15:34:28,300 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:34:28,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:28,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1690423504, now seen corresponding path program 1 times [2021-11-22 15:34:28,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:28,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828257393] [2021-11-22 15:34:28,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:28,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:28,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:28,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:28,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:28,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828257393] [2021-11-22 15:34:28,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828257393] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:28,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:28,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-22 15:34:28,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523411603] [2021-11-22 15:34:28,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:28,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 15:34:28,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:28,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 15:34:28,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:34:28,495 INFO L87 Difference]: Start difference. First operand 2484 states and 3843 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:29,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:29,303 INFO L93 Difference]: Finished difference Result 4666 states and 7252 transitions. [2021-11-22 15:34:29,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 15:34:29,304 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-22 15:34:29,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:29,341 INFO L225 Difference]: With dead ends: 4666 [2021-11-22 15:34:29,341 INFO L226 Difference]: Without dead ends: 4361 [2021-11-22 15:34:29,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-11-22 15:34:29,344 INFO L933 BasicCegarLoop]: 405 mSDtfsCounter, 2200 mSDsluCounter, 3271 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2200 SdHoareTripleChecker+Valid, 3676 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:29,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2200 Valid, 3676 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:34:29,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4361 states. [2021-11-22 15:34:29,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4361 to 2798. [2021-11-22 15:34:29,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2798 states, 2797 states have (on average 1.5495173400071505) internal successors, (4334), 2797 states have internal predecessors, (4334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:29,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2798 states to 2798 states and 4334 transitions. [2021-11-22 15:34:29,748 INFO L78 Accepts]: Start accepts. Automaton has 2798 states and 4334 transitions. Word has length 110 [2021-11-22 15:34:29,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:29,748 INFO L470 AbstractCegarLoop]: Abstraction has 2798 states and 4334 transitions. [2021-11-22 15:34:29,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:29,749 INFO L276 IsEmpty]: Start isEmpty. Operand 2798 states and 4334 transitions. [2021-11-22 15:34:29,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-22 15:34:29,751 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:29,752 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:29,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-22 15:34:29,752 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:34:29,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:29,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1882311825, now seen corresponding path program 1 times [2021-11-22 15:34:29,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:29,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220061951] [2021-11-22 15:34:29,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:29,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:29,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:29,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:29,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:29,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220061951] [2021-11-22 15:34:29,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220061951] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:29,872 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:29,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:34:29,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949153769] [2021-11-22 15:34:29,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:29,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:34:29,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:29,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:34:29,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:34:29,874 INFO L87 Difference]: Start difference. First operand 2798 states and 4334 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:30,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:30,488 INFO L93 Difference]: Finished difference Result 5539 states and 8610 transitions. [2021-11-22 15:34:30,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:34:30,489 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2021-11-22 15:34:30,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:30,509 INFO L225 Difference]: With dead ends: 5539 [2021-11-22 15:34:30,510 INFO L226 Difference]: Without dead ends: 2798 [2021-11-22 15:34:30,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:34:30,515 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 738 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:30,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [738 Valid, 149 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:34:30,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2021-11-22 15:34:30,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2798. [2021-11-22 15:34:30,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2798 states, 2797 states have (on average 1.5370039327851268) internal successors, (4299), 2797 states have internal predecessors, (4299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:30,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2798 states to 2798 states and 4299 transitions. [2021-11-22 15:34:30,930 INFO L78 Accepts]: Start accepts. Automaton has 2798 states and 4299 transitions. Word has length 111 [2021-11-22 15:34:30,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:30,931 INFO L470 AbstractCegarLoop]: Abstraction has 2798 states and 4299 transitions. [2021-11-22 15:34:30,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:30,931 INFO L276 IsEmpty]: Start isEmpty. Operand 2798 states and 4299 transitions. [2021-11-22 15:34:30,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-22 15:34:30,933 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:30,934 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:30,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-22 15:34:30,934 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:34:30,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:30,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1093414131, now seen corresponding path program 1 times [2021-11-22 15:34:30,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:30,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854360086] [2021-11-22 15:34:30,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:30,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:30,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:31,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:31,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:31,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854360086] [2021-11-22 15:34:31,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854360086] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:31,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:31,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:34:31,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964292392] [2021-11-22 15:34:31,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:31,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:34:31,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:31,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:34:31,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:34:31,037 INFO L87 Difference]: Start difference. First operand 2798 states and 4299 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:31,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:31,591 INFO L93 Difference]: Finished difference Result 5523 states and 8521 transitions. [2021-11-22 15:34:31,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:34:31,591 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-22 15:34:31,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:31,616 INFO L225 Difference]: With dead ends: 5523 [2021-11-22 15:34:31,617 INFO L226 Difference]: Without dead ends: 2798 [2021-11-22 15:34:31,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:34:31,629 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 687 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:31,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [687 Valid, 181 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:34:31,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2021-11-22 15:34:31,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2798. [2021-11-22 15:34:32,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2798 states, 2797 states have (on average 1.5244905255631034) internal successors, (4264), 2797 states have internal predecessors, (4264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:32,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2798 states to 2798 states and 4264 transitions. [2021-11-22 15:34:32,015 INFO L78 Accepts]: Start accepts. Automaton has 2798 states and 4264 transitions. Word has length 112 [2021-11-22 15:34:32,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:32,015 INFO L470 AbstractCegarLoop]: Abstraction has 2798 states and 4264 transitions. [2021-11-22 15:34:32,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:32,016 INFO L276 IsEmpty]: Start isEmpty. Operand 2798 states and 4264 transitions. [2021-11-22 15:34:32,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-22 15:34:32,018 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:32,019 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:32,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-22 15:34:32,019 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:34:32,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:32,020 INFO L85 PathProgramCache]: Analyzing trace with hash 596896751, now seen corresponding path program 1 times [2021-11-22 15:34:32,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:32,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111270980] [2021-11-22 15:34:32,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:32,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:32,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:32,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:32,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:32,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111270980] [2021-11-22 15:34:32,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111270980] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:32,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:32,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:34:32,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178458160] [2021-11-22 15:34:32,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:32,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:34:32,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:32,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:34:32,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:34:32,131 INFO L87 Difference]: Start difference. First operand 2798 states and 4264 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:32,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:32,684 INFO L93 Difference]: Finished difference Result 5515 states and 8442 transitions. [2021-11-22 15:34:32,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:34:32,685 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-11-22 15:34:32,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:32,691 INFO L225 Difference]: With dead ends: 5515 [2021-11-22 15:34:32,692 INFO L226 Difference]: Without dead ends: 2798 [2021-11-22 15:34:32,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:34:32,697 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 661 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:32,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [661 Valid, 201 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:34:32,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2021-11-22 15:34:33,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2798. [2021-11-22 15:34:33,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2798 states, 2797 states have (on average 1.5119771183410797) internal successors, (4229), 2797 states have internal predecessors, (4229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:33,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2798 states to 2798 states and 4229 transitions. [2021-11-22 15:34:33,065 INFO L78 Accepts]: Start accepts. Automaton has 2798 states and 4229 transitions. Word has length 113 [2021-11-22 15:34:33,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:33,065 INFO L470 AbstractCegarLoop]: Abstraction has 2798 states and 4229 transitions. [2021-11-22 15:34:33,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:33,066 INFO L276 IsEmpty]: Start isEmpty. Operand 2798 states and 4229 transitions. [2021-11-22 15:34:33,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-22 15:34:33,068 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:33,068 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:33,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-22 15:34:33,069 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:34:33,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:33,069 INFO L85 PathProgramCache]: Analyzing trace with hash 914047091, now seen corresponding path program 1 times [2021-11-22 15:34:33,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:33,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97378127] [2021-11-22 15:34:33,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:33,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:33,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:33,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:33,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:33,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97378127] [2021-11-22 15:34:33,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97378127] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:33,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:33,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:34:33,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142775998] [2021-11-22 15:34:33,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:33,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:34:33,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:33,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:34:33,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:34:33,148 INFO L87 Difference]: Start difference. First operand 2798 states and 4229 transitions. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:33,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:33,807 INFO L93 Difference]: Finished difference Result 5527 states and 8386 transitions. [2021-11-22 15:34:33,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:34:33,807 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-22 15:34:33,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:33,814 INFO L225 Difference]: With dead ends: 5527 [2021-11-22 15:34:33,814 INFO L226 Difference]: Without dead ends: 2798 [2021-11-22 15:34:33,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:34:33,820 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 686 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:33,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [686 Valid, 173 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:34:33,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2021-11-22 15:34:34,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2798. [2021-11-22 15:34:34,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2798 states, 2797 states have (on average 1.499463711119056) internal successors, (4194), 2797 states have internal predecessors, (4194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:34,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2798 states to 2798 states and 4194 transitions. [2021-11-22 15:34:34,181 INFO L78 Accepts]: Start accepts. Automaton has 2798 states and 4194 transitions. Word has length 114 [2021-11-22 15:34:34,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:34,181 INFO L470 AbstractCegarLoop]: Abstraction has 2798 states and 4194 transitions. [2021-11-22 15:34:34,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:34,182 INFO L276 IsEmpty]: Start isEmpty. Operand 2798 states and 4194 transitions. [2021-11-22 15:34:34,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-22 15:34:34,184 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:34,184 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:34,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-22 15:34:34,184 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:34:34,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:34,185 INFO L85 PathProgramCache]: Analyzing trace with hash -932538653, now seen corresponding path program 1 times [2021-11-22 15:34:34,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:34,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789832602] [2021-11-22 15:34:34,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:34,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:34,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:34,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:34,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:34,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789832602] [2021-11-22 15:34:34,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789832602] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:34,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:34,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:34:34,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789197058] [2021-11-22 15:34:34,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:34,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:34:34,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:34,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:34:34,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:34:34,301 INFO L87 Difference]: Start difference. First operand 2798 states and 4194 transitions. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:34,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:34,780 INFO L93 Difference]: Finished difference Result 5535 states and 8326 transitions. [2021-11-22 15:34:34,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:34:34,781 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-22 15:34:34,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:34,788 INFO L225 Difference]: With dead ends: 5535 [2021-11-22 15:34:34,788 INFO L226 Difference]: Without dead ends: 2798 [2021-11-22 15:34:34,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:34:34,793 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 702 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:34,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [702 Valid, 157 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:34:34,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2021-11-22 15:34:35,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2798. [2021-11-22 15:34:35,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2798 states, 2797 states have (on average 1.4869503038970326) internal successors, (4159), 2797 states have internal predecessors, (4159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:35,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2798 states to 2798 states and 4159 transitions. [2021-11-22 15:34:35,133 INFO L78 Accepts]: Start accepts. Automaton has 2798 states and 4159 transitions. Word has length 115 [2021-11-22 15:34:35,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:35,134 INFO L470 AbstractCegarLoop]: Abstraction has 2798 states and 4159 transitions. [2021-11-22 15:34:35,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:35,134 INFO L276 IsEmpty]: Start isEmpty. Operand 2798 states and 4159 transitions. [2021-11-22 15:34:35,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-22 15:34:35,135 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:35,136 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:35,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-22 15:34:35,136 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:34:35,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:35,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1866315149, now seen corresponding path program 1 times [2021-11-22 15:34:35,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:35,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510951776] [2021-11-22 15:34:35,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:35,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:35,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:35,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:35,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:35,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510951776] [2021-11-22 15:34:35,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510951776] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:35,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:35,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:34:35,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413939609] [2021-11-22 15:34:35,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:35,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:34:35,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:35,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:34:35,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:34:35,222 INFO L87 Difference]: Start difference. First operand 2798 states and 4159 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:35,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:35,759 INFO L93 Difference]: Finished difference Result 5531 states and 8252 transitions. [2021-11-22 15:34:35,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:34:35,760 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2021-11-22 15:34:35,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:35,764 INFO L225 Difference]: With dead ends: 5531 [2021-11-22 15:34:35,765 INFO L226 Difference]: Without dead ends: 2798 [2021-11-22 15:34:35,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:34:35,770 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 684 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:35,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [684 Valid, 165 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:34:35,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2021-11-22 15:34:36,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2798. [2021-11-22 15:34:36,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2798 states, 2797 states have (on average 1.474436896675009) internal successors, (4124), 2797 states have internal predecessors, (4124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:36,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2798 states to 2798 states and 4124 transitions. [2021-11-22 15:34:36,129 INFO L78 Accepts]: Start accepts. Automaton has 2798 states and 4124 transitions. Word has length 116 [2021-11-22 15:34:36,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:36,129 INFO L470 AbstractCegarLoop]: Abstraction has 2798 states and 4124 transitions. [2021-11-22 15:34:36,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:36,130 INFO L276 IsEmpty]: Start isEmpty. Operand 2798 states and 4124 transitions. [2021-11-22 15:34:36,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-22 15:34:36,132 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:36,132 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:36,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-22 15:34:36,132 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:34:36,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:36,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1607436073, now seen corresponding path program 1 times [2021-11-22 15:34:36,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:36,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975769317] [2021-11-22 15:34:36,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:36,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:36,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:36,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:36,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:36,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975769317] [2021-11-22 15:34:36,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975769317] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:36,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:36,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:34:36,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301924014] [2021-11-22 15:34:36,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:36,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:34:36,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:36,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:34:36,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:34:36,204 INFO L87 Difference]: Start difference. First operand 2798 states and 4124 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:36,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:36,687 INFO L93 Difference]: Finished difference Result 5519 states and 8170 transitions. [2021-11-22 15:34:36,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:34:36,688 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2021-11-22 15:34:36,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:36,693 INFO L225 Difference]: With dead ends: 5519 [2021-11-22 15:34:36,694 INFO L226 Difference]: Without dead ends: 2798 [2021-11-22 15:34:36,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:34:36,699 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 642 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:36,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [642 Valid, 189 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:34:36,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2021-11-22 15:34:37,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2798. [2021-11-22 15:34:37,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2798 states, 2797 states have (on average 1.4619234894529853) internal successors, (4089), 2797 states have internal predecessors, (4089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:37,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2798 states to 2798 states and 4089 transitions. [2021-11-22 15:34:37,103 INFO L78 Accepts]: Start accepts. Automaton has 2798 states and 4089 transitions. Word has length 117 [2021-11-22 15:34:37,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:37,103 INFO L470 AbstractCegarLoop]: Abstraction has 2798 states and 4089 transitions. [2021-11-22 15:34:37,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:37,104 INFO L276 IsEmpty]: Start isEmpty. Operand 2798 states and 4089 transitions. [2021-11-22 15:34:37,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-22 15:34:37,105 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:37,106 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:37,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-22 15:34:37,106 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:34:37,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:37,107 INFO L85 PathProgramCache]: Analyzing trace with hash 154166167, now seen corresponding path program 1 times [2021-11-22 15:34:37,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:37,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361450039] [2021-11-22 15:34:37,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:37,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:37,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:37,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:37,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:37,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361450039] [2021-11-22 15:34:37,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361450039] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:37,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:37,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:34:37,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975597259] [2021-11-22 15:34:37,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:37,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:34:37,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:37,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:34:37,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:34:37,207 INFO L87 Difference]: Start difference. First operand 2798 states and 4089 transitions. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:38,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:38,114 INFO L93 Difference]: Finished difference Result 4634 states and 6793 transitions. [2021-11-22 15:34:38,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:34:38,115 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-11-22 15:34:38,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:38,124 INFO L225 Difference]: With dead ends: 4634 [2021-11-22 15:34:38,124 INFO L226 Difference]: Without dead ends: 4632 [2021-11-22 15:34:38,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:34:38,126 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 226 mSDsluCounter, 779 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 1059 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:38,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 1059 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:34:38,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4632 states. [2021-11-22 15:34:38,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4632 to 2814. [2021-11-22 15:34:38,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2814 states, 2813 states have (on average 1.4560966939210807) internal successors, (4096), 2813 states have internal predecessors, (4096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:38,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2814 states to 2814 states and 4096 transitions. [2021-11-22 15:34:38,540 INFO L78 Accepts]: Start accepts. Automaton has 2814 states and 4096 transitions. Word has length 118 [2021-11-22 15:34:38,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:38,541 INFO L470 AbstractCegarLoop]: Abstraction has 2814 states and 4096 transitions. [2021-11-22 15:34:38,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:38,541 INFO L276 IsEmpty]: Start isEmpty. Operand 2814 states and 4096 transitions. [2021-11-22 15:34:38,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-22 15:34:38,543 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:38,543 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:38,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-22 15:34:38,543 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:34:38,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:38,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1441850003, now seen corresponding path program 1 times [2021-11-22 15:34:38,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:38,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989399426] [2021-11-22 15:34:38,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:38,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:38,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:38,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:38,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:38,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989399426] [2021-11-22 15:34:38,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989399426] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:38,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:38,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-22 15:34:38,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320669784] [2021-11-22 15:34:38,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:38,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-22 15:34:38,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:38,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-22 15:34:38,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-22 15:34:38,932 INFO L87 Difference]: Start difference. First operand 2814 states and 4096 transitions. Second operand has 13 states, 13 states have (on average 9.076923076923077) internal successors, (118), 12 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:40,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:40,762 INFO L93 Difference]: Finished difference Result 8114 states and 11828 transitions. [2021-11-22 15:34:40,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-22 15:34:40,762 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.076923076923077) internal successors, (118), 12 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-11-22 15:34:40,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:40,772 INFO L225 Difference]: With dead ends: 8114 [2021-11-22 15:34:40,773 INFO L226 Difference]: Without dead ends: 5513 [2021-11-22 15:34:40,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2021-11-22 15:34:40,777 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 1648 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1648 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:40,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1648 Valid, 768 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-22 15:34:40,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5513 states. [2021-11-22 15:34:41,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5513 to 2814. [2021-11-22 15:34:41,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2814 states, 2813 states have (on average 1.4536082474226804) internal successors, (4089), 2813 states have internal predecessors, (4089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:41,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2814 states to 2814 states and 4089 transitions. [2021-11-22 15:34:41,249 INFO L78 Accepts]: Start accepts. Automaton has 2814 states and 4089 transitions. Word has length 118 [2021-11-22 15:34:41,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:41,249 INFO L470 AbstractCegarLoop]: Abstraction has 2814 states and 4089 transitions. [2021-11-22 15:34:41,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.076923076923077) internal successors, (118), 12 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:41,250 INFO L276 IsEmpty]: Start isEmpty. Operand 2814 states and 4089 transitions. [2021-11-22 15:34:41,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-22 15:34:41,251 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:41,251 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:41,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-22 15:34:41,252 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:34:41,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:41,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1786466271, now seen corresponding path program 1 times [2021-11-22 15:34:41,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:41,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512730023] [2021-11-22 15:34:41,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:41,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:41,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:41,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:41,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:41,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512730023] [2021-11-22 15:34:41,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512730023] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:41,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:41,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-22 15:34:41,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008103978] [2021-11-22 15:34:41,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:41,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-22 15:34:41,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:41,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-22 15:34:41,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-11-22 15:34:41,568 INFO L87 Difference]: Start difference. First operand 2814 states and 4089 transitions. Second operand has 14 states, 14 states have (on average 8.5) internal successors, (119), 13 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:44,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:44,638 INFO L93 Difference]: Finished difference Result 13680 states and 19869 transitions. [2021-11-22 15:34:44,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-22 15:34:44,638 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.5) internal successors, (119), 13 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2021-11-22 15:34:44,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:44,655 INFO L225 Difference]: With dead ends: 13680 [2021-11-22 15:34:44,655 INFO L226 Difference]: Without dead ends: 11055 [2021-11-22 15:34:44,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=230, Invalid=700, Unknown=0, NotChecked=0, Total=930 [2021-11-22 15:34:44,661 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 2559 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 1069 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2559 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:44,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2559 Valid, 1180 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1069 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-22 15:34:44,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11055 states. [2021-11-22 15:34:45,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11055 to 2859. [2021-11-22 15:34:45,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2859 states, 2858 states have (on average 1.4527641707487753) internal successors, (4152), 2858 states have internal predecessors, (4152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:45,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2859 states to 2859 states and 4152 transitions. [2021-11-22 15:34:45,372 INFO L78 Accepts]: Start accepts. Automaton has 2859 states and 4152 transitions. Word has length 119 [2021-11-22 15:34:45,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:45,372 INFO L470 AbstractCegarLoop]: Abstraction has 2859 states and 4152 transitions. [2021-11-22 15:34:45,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.5) internal successors, (119), 13 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:45,373 INFO L276 IsEmpty]: Start isEmpty. Operand 2859 states and 4152 transitions. [2021-11-22 15:34:45,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-22 15:34:45,374 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:45,375 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:45,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-22 15:34:45,375 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:34:45,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:45,376 INFO L85 PathProgramCache]: Analyzing trace with hash 280122525, now seen corresponding path program 1 times [2021-11-22 15:34:45,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:45,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401705678] [2021-11-22 15:34:45,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:45,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:45,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:45,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:45,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401705678] [2021-11-22 15:34:45,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401705678] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:45,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:45,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-22 15:34:45,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154806571] [2021-11-22 15:34:45,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:45,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 15:34:45,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:45,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 15:34:45,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:34:45,631 INFO L87 Difference]: Start difference. First operand 2859 states and 4152 transitions. Second operand has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:47,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:47,112 INFO L93 Difference]: Finished difference Result 8171 states and 11935 transitions. [2021-11-22 15:34:47,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-22 15:34:47,113 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2021-11-22 15:34:47,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:47,119 INFO L225 Difference]: With dead ends: 8171 [2021-11-22 15:34:47,119 INFO L226 Difference]: Without dead ends: 5453 [2021-11-22 15:34:47,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-22 15:34:47,124 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 1623 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1623 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:47,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1623 Valid, 596 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 15:34:47,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5453 states. [2021-11-22 15:34:47,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5453 to 2859. [2021-11-22 15:34:47,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2859 states, 2858 states have (on average 1.4524142757172849) internal successors, (4151), 2858 states have internal predecessors, (4151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:47,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2859 states to 2859 states and 4151 transitions. [2021-11-22 15:34:47,811 INFO L78 Accepts]: Start accepts. Automaton has 2859 states and 4151 transitions. Word has length 119 [2021-11-22 15:34:47,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:47,812 INFO L470 AbstractCegarLoop]: Abstraction has 2859 states and 4151 transitions. [2021-11-22 15:34:47,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:47,812 INFO L276 IsEmpty]: Start isEmpty. Operand 2859 states and 4151 transitions. [2021-11-22 15:34:47,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-22 15:34:47,814 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:47,814 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:47,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-22 15:34:47,815 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:34:47,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:47,816 INFO L85 PathProgramCache]: Analyzing trace with hash -2000402439, now seen corresponding path program 1 times [2021-11-22 15:34:47,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:47,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103289373] [2021-11-22 15:34:47,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:47,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:47,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:48,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:48,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:48,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103289373] [2021-11-22 15:34:48,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103289373] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:48,011 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:48,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-22 15:34:48,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888878126] [2021-11-22 15:34:48,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:48,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 15:34:48,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:48,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 15:34:48,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-22 15:34:48,013 INFO L87 Difference]: Start difference. First operand 2859 states and 4151 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:49,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:49,746 INFO L93 Difference]: Finished difference Result 8311 states and 12107 transitions. [2021-11-22 15:34:49,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-22 15:34:49,748 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-11-22 15:34:49,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:49,754 INFO L225 Difference]: With dead ends: 8311 [2021-11-22 15:34:49,754 INFO L226 Difference]: Without dead ends: 5613 [2021-11-22 15:34:49,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2021-11-22 15:34:49,758 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 1475 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:49,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1475 Valid, 722 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 15:34:49,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5613 states. [2021-11-22 15:34:50,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5613 to 2859. [2021-11-22 15:34:50,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2859 states, 2858 states have (on average 1.4503149055283415) internal successors, (4145), 2858 states have internal predecessors, (4145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:50,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2859 states to 2859 states and 4145 transitions. [2021-11-22 15:34:50,299 INFO L78 Accepts]: Start accepts. Automaton has 2859 states and 4145 transitions. Word has length 120 [2021-11-22 15:34:50,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:50,300 INFO L470 AbstractCegarLoop]: Abstraction has 2859 states and 4145 transitions. [2021-11-22 15:34:50,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:50,300 INFO L276 IsEmpty]: Start isEmpty. Operand 2859 states and 4145 transitions. [2021-11-22 15:34:50,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-22 15:34:50,302 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:50,302 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:50,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-22 15:34:50,303 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:34:50,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:50,303 INFO L85 PathProgramCache]: Analyzing trace with hash 215177580, now seen corresponding path program 1 times [2021-11-22 15:34:50,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:50,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120470276] [2021-11-22 15:34:50,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:50,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:50,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:50,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:50,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:50,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120470276] [2021-11-22 15:34:50,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120470276] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:50,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:50,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-22 15:34:50,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407287410] [2021-11-22 15:34:50,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:50,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 15:34:50,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:50,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 15:34:50,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-22 15:34:50,492 INFO L87 Difference]: Start difference. First operand 2859 states and 4145 transitions. Second operand has 10 states, 10 states have (on average 12.1) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:52,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:52,280 INFO L93 Difference]: Finished difference Result 8226 states and 11965 transitions. [2021-11-22 15:34:52,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-22 15:34:52,280 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.1) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-11-22 15:34:52,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:52,287 INFO L225 Difference]: With dead ends: 8226 [2021-11-22 15:34:52,288 INFO L226 Difference]: Without dead ends: 5595 [2021-11-22 15:34:52,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2021-11-22 15:34:52,292 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 1628 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1628 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:52,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1628 Valid, 520 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 15:34:52,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5595 states. [2021-11-22 15:34:52,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5595 to 2814. [2021-11-22 15:34:52,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2814 states, 2813 states have (on average 1.449697831496623) internal successors, (4078), 2813 states have internal predecessors, (4078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:52,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2814 states to 2814 states and 4078 transitions. [2021-11-22 15:34:52,851 INFO L78 Accepts]: Start accepts. Automaton has 2814 states and 4078 transitions. Word has length 121 [2021-11-22 15:34:52,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:52,852 INFO L470 AbstractCegarLoop]: Abstraction has 2814 states and 4078 transitions. [2021-11-22 15:34:52,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.1) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:52,852 INFO L276 IsEmpty]: Start isEmpty. Operand 2814 states and 4078 transitions. [2021-11-22 15:34:52,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-22 15:34:52,854 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:52,854 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:52,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-22 15:34:52,855 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:34:52,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:52,855 INFO L85 PathProgramCache]: Analyzing trace with hash 314945172, now seen corresponding path program 1 times [2021-11-22 15:34:52,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:52,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144877716] [2021-11-22 15:34:52,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:52,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:52,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:53,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:53,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:53,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144877716] [2021-11-22 15:34:53,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144877716] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:53,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:53,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-22 15:34:53,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785470394] [2021-11-22 15:34:53,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:53,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 15:34:53,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:53,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 15:34:53,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-22 15:34:53,036 INFO L87 Difference]: Start difference. First operand 2814 states and 4078 transitions. Second operand has 10 states, 10 states have (on average 12.1) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:54,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:54,982 INFO L93 Difference]: Finished difference Result 8259 states and 12016 transitions. [2021-11-22 15:34:54,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-22 15:34:54,983 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.1) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-11-22 15:34:54,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:54,988 INFO L225 Difference]: With dead ends: 8259 [2021-11-22 15:34:54,988 INFO L226 Difference]: Without dead ends: 5573 [2021-11-22 15:34:54,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2021-11-22 15:34:54,992 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 1138 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:54,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1138 Valid, 752 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 656 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 15:34:54,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5573 states. [2021-11-22 15:34:55,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5573 to 2814. [2021-11-22 15:34:55,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2814 states, 2813 states have (on average 1.4489868467827942) internal successors, (4076), 2813 states have internal predecessors, (4076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:55,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2814 states to 2814 states and 4076 transitions. [2021-11-22 15:34:55,532 INFO L78 Accepts]: Start accepts. Automaton has 2814 states and 4076 transitions. Word has length 121 [2021-11-22 15:34:55,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:55,532 INFO L470 AbstractCegarLoop]: Abstraction has 2814 states and 4076 transitions. [2021-11-22 15:34:55,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.1) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:55,532 INFO L276 IsEmpty]: Start isEmpty. Operand 2814 states and 4076 transitions. [2021-11-22 15:34:55,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-22 15:34:55,533 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:55,533 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:55,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-22 15:34:55,534 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:34:55,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:55,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1795722265, now seen corresponding path program 1 times [2021-11-22 15:34:55,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:55,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950375445] [2021-11-22 15:34:55,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:55,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:55,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:55,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:55,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:55,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950375445] [2021-11-22 15:34:55,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950375445] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:55,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:55,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-22 15:34:55,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371761291] [2021-11-22 15:34:55,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:55,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 15:34:55,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:55,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 15:34:55,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-22 15:34:55,737 INFO L87 Difference]: Start difference. First operand 2814 states and 4076 transitions. Second operand has 10 states, 10 states have (on average 12.2) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:57,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:57,632 INFO L93 Difference]: Finished difference Result 8214 states and 11946 transitions. [2021-11-22 15:34:57,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-22 15:34:57,632 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.2) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2021-11-22 15:34:57,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:57,638 INFO L225 Difference]: With dead ends: 8214 [2021-11-22 15:34:57,638 INFO L226 Difference]: Without dead ends: 5558 [2021-11-22 15:34:57,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2021-11-22 15:34:57,643 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 1819 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1819 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:57,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1819 Valid, 586 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 15:34:57,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5558 states. [2021-11-22 15:34:58,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5558 to 2814. [2021-11-22 15:34:58,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2814 states, 2813 states have (on average 1.4472093849982226) internal successors, (4071), 2813 states have internal predecessors, (4071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:58,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2814 states to 2814 states and 4071 transitions. [2021-11-22 15:34:58,302 INFO L78 Accepts]: Start accepts. Automaton has 2814 states and 4071 transitions. Word has length 122 [2021-11-22 15:34:58,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:58,303 INFO L470 AbstractCegarLoop]: Abstraction has 2814 states and 4071 transitions. [2021-11-22 15:34:58,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.2) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:58,303 INFO L276 IsEmpty]: Start isEmpty. Operand 2814 states and 4071 transitions. [2021-11-22 15:34:58,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-22 15:34:58,304 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:58,304 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:58,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-22 15:34:58,305 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:34:58,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:58,305 INFO L85 PathProgramCache]: Analyzing trace with hash -141489226, now seen corresponding path program 1 times [2021-11-22 15:34:58,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:58,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565682921] [2021-11-22 15:34:58,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:58,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:58,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:58,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:58,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:58,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565682921] [2021-11-22 15:34:58,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565682921] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:58,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:58,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-22 15:34:58,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4635817] [2021-11-22 15:34:58,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:58,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-22 15:34:58,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:58,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-22 15:34:58,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-11-22 15:34:58,645 INFO L87 Difference]: Start difference. First operand 2814 states and 4071 transitions. Second operand has 13 states, 13 states have (on average 9.461538461538462) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:35:12,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:12,324 INFO L93 Difference]: Finished difference Result 44583 states and 64241 transitions. [2021-11-22 15:35:12,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-22 15:35:12,325 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.461538461538462) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2021-11-22 15:35:12,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:35:12,378 INFO L225 Difference]: With dead ends: 44583 [2021-11-22 15:35:12,378 INFO L226 Difference]: Without dead ends: 41989 [2021-11-22 15:35:12,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 824 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=627, Invalid=2025, Unknown=0, NotChecked=0, Total=2652 [2021-11-22 15:35:12,389 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 5380 mSDsluCounter, 1147 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5380 SdHoareTripleChecker+Valid, 1405 SdHoareTripleChecker+Invalid, 1438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:35:12,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5380 Valid, 1405 Invalid, 1438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 1243 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-22 15:35:12,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41989 states. [2021-11-22 15:35:13,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41989 to 2845. [2021-11-22 15:35:13,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2845 states, 2844 states have (on average 1.4451476793248945) internal successors, (4110), 2844 states have internal predecessors, (4110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:35:13,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2845 states to 2845 states and 4110 transitions. [2021-11-22 15:35:13,412 INFO L78 Accepts]: Start accepts. Automaton has 2845 states and 4110 transitions. Word has length 123 [2021-11-22 15:35:13,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:35:13,412 INFO L470 AbstractCegarLoop]: Abstraction has 2845 states and 4110 transitions. [2021-11-22 15:35:13,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.461538461538462) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:35:13,412 INFO L276 IsEmpty]: Start isEmpty. Operand 2845 states and 4110 transitions. [2021-11-22 15:35:13,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-22 15:35:13,414 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:35:13,414 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:35:13,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-22 15:35:13,414 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:35:13,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:13,415 INFO L85 PathProgramCache]: Analyzing trace with hash 182258086, now seen corresponding path program 1 times [2021-11-22 15:35:13,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:13,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408834621] [2021-11-22 15:35:13,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:13,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:13,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:13,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:13,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:35:13,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408834621] [2021-11-22 15:35:13,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408834621] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:13,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:13,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-22 15:35:13,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733236339] [2021-11-22 15:35:13,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:13,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 15:35:13,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:35:13,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 15:35:13,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-22 15:35:13,597 INFO L87 Difference]: Start difference. First operand 2845 states and 4110 transitions. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:35:17,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:17,847 INFO L93 Difference]: Finished difference Result 12913 states and 18696 transitions. [2021-11-22 15:35:17,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-22 15:35:17,848 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-22 15:35:17,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:35:17,858 INFO L225 Difference]: With dead ends: 12913 [2021-11-22 15:35:17,858 INFO L226 Difference]: Without dead ends: 10319 [2021-11-22 15:35:17,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2021-11-22 15:35:17,863 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 1173 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-22 15:35:17,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1173 Valid, 848 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-22 15:35:17,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10319 states. [2021-11-22 15:35:18,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10319 to 2838. [2021-11-22 15:35:18,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2838 states, 2837 states have (on average 1.446246034543532) internal successors, (4103), 2837 states have internal predecessors, (4103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:35:18,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2838 states to 2838 states and 4103 transitions. [2021-11-22 15:35:18,732 INFO L78 Accepts]: Start accepts. Automaton has 2838 states and 4103 transitions. Word has length 124 [2021-11-22 15:35:18,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:35:18,733 INFO L470 AbstractCegarLoop]: Abstraction has 2838 states and 4103 transitions. [2021-11-22 15:35:18,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:35:18,733 INFO L276 IsEmpty]: Start isEmpty. Operand 2838 states and 4103 transitions. [2021-11-22 15:35:18,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-22 15:35:18,735 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:35:18,735 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:35:18,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-22 15:35:18,736 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:35:18,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:18,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1094727144, now seen corresponding path program 1 times [2021-11-22 15:35:18,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:18,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560444734] [2021-11-22 15:35:18,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:18,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:18,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:19,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:19,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:35:19,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560444734] [2021-11-22 15:35:19,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560444734] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:19,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:19,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-22 15:35:19,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014574343] [2021-11-22 15:35:19,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:19,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-22 15:35:19,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:35:19,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-22 15:35:19,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-11-22 15:35:19,230 INFO L87 Difference]: Start difference. First operand 2838 states and 4103 transitions. Second operand has 13 states, 13 states have (on average 9.538461538461538) internal successors, (124), 13 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:35:24,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:24,038 INFO L93 Difference]: Finished difference Result 11522 states and 16797 transitions. [2021-11-22 15:35:24,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-22 15:35:24,039 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.538461538461538) internal successors, (124), 13 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-22 15:35:24,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:35:24,050 INFO L225 Difference]: With dead ends: 11522 [2021-11-22 15:35:24,050 INFO L226 Difference]: Without dead ends: 10872 [2021-11-22 15:35:24,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2021-11-22 15:35:24,054 INFO L933 BasicCegarLoop]: 616 mSDtfsCounter, 1603 mSDsluCounter, 2711 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1603 SdHoareTripleChecker+Valid, 3327 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:35:24,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1603 Valid, 3327 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 15:35:24,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10872 states. [2021-11-22 15:35:25,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10872 to 2819. [2021-11-22 15:35:25,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2819 states, 2818 states have (on average 1.4453513129879347) internal successors, (4073), 2818 states have internal predecessors, (4073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:35:25,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2819 states to 2819 states and 4073 transitions. [2021-11-22 15:35:25,170 INFO L78 Accepts]: Start accepts. Automaton has 2819 states and 4073 transitions. Word has length 124 [2021-11-22 15:35:25,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:35:25,170 INFO L470 AbstractCegarLoop]: Abstraction has 2819 states and 4073 transitions. [2021-11-22 15:35:25,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.538461538461538) internal successors, (124), 13 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:35:25,170 INFO L276 IsEmpty]: Start isEmpty. Operand 2819 states and 4073 transitions. [2021-11-22 15:35:25,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-22 15:35:25,171 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:35:25,171 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:35:25,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-22 15:35:25,172 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:35:25,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:25,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1606632569, now seen corresponding path program 1 times [2021-11-22 15:35:25,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:25,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447628194] [2021-11-22 15:35:25,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:25,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:25,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:27,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:27,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:35:27,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447628194] [2021-11-22 15:35:27,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447628194] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:27,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:27,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2021-11-22 15:35:27,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756745478] [2021-11-22 15:35:27,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:27,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-11-22 15:35:27,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:35:27,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-11-22 15:35:27,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1680, Unknown=0, NotChecked=0, Total=1806 [2021-11-22 15:35:27,397 INFO L87 Difference]: Start difference. First operand 2819 states and 4073 transitions. Second operand has 43 states, 43 states have (on average 2.883720930232558) internal successors, (124), 43 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:35:52,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:52,925 INFO L93 Difference]: Finished difference Result 27927 states and 40784 transitions. [2021-11-22 15:35:52,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-22 15:35:52,926 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.883720930232558) internal successors, (124), 43 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-22 15:35:52,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:35:52,955 INFO L225 Difference]: With dead ends: 27927 [2021-11-22 15:35:52,955 INFO L226 Difference]: Without dead ends: 25333 [2021-11-22 15:35:52,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1009 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=1008, Invalid=5634, Unknown=0, NotChecked=0, Total=6642 [2021-11-22 15:35:52,963 INFO L933 BasicCegarLoop]: 1090 mSDtfsCounter, 3121 mSDsluCounter, 26550 mSDsCounter, 0 mSdLazyCounter, 18129 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3121 SdHoareTripleChecker+Valid, 27640 SdHoareTripleChecker+Invalid, 18237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 18129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2021-11-22 15:35:52,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3121 Valid, 27640 Invalid, 18237 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [108 Valid, 18129 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2021-11-22 15:35:52,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25333 states. [2021-11-22 15:35:54,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25333 to 2870. [2021-11-22 15:35:54,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2870 states, 2869 states have (on average 1.4419658417567096) internal successors, (4137), 2869 states have internal predecessors, (4137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:35:54,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 4137 transitions. [2021-11-22 15:35:54,156 INFO L78 Accepts]: Start accepts. Automaton has 2870 states and 4137 transitions. Word has length 124 [2021-11-22 15:35:54,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:35:54,156 INFO L470 AbstractCegarLoop]: Abstraction has 2870 states and 4137 transitions. [2021-11-22 15:35:54,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.883720930232558) internal successors, (124), 43 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:35:54,156 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states and 4137 transitions. [2021-11-22 15:35:54,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-22 15:35:54,157 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:35:54,158 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:35:54,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-22 15:35:54,158 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:35:54,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:54,159 INFO L85 PathProgramCache]: Analyzing trace with hash -339532985, now seen corresponding path program 1 times [2021-11-22 15:35:54,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:54,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158899279] [2021-11-22 15:35:54,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:54,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:54,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:54,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:54,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:35:54,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158899279] [2021-11-22 15:35:54,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158899279] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:54,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:54,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:35:54,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092014620] [2021-11-22 15:35:54,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:54,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:35:54,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:35:54,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:35:54,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:35:54,214 INFO L87 Difference]: Start difference. First operand 2870 states and 4137 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:35:56,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:56,366 INFO L93 Difference]: Finished difference Result 7922 states and 11569 transitions. [2021-11-22 15:35:56,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:35:56,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-22 15:35:56,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:35:56,372 INFO L225 Difference]: With dead ends: 7922 [2021-11-22 15:35:56,372 INFO L226 Difference]: Without dead ends: 5328 [2021-11-22 15:35:56,375 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 [2021-11-22 15:35:56,375 INFO L933 BasicCegarLoop]: 356 mSDtfsCounter, 128 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:35:56,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 550 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:35:56,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5328 states. [2021-11-22 15:35:58,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5328 to 5190. [2021-11-22 15:35:58,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5190 states, 5189 states have (on average 1.4422817498554634) internal successors, (7484), 5189 states have internal predecessors, (7484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:35:58,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5190 states to 5190 states and 7484 transitions. [2021-11-22 15:35:58,419 INFO L78 Accepts]: Start accepts. Automaton has 5190 states and 7484 transitions. Word has length 124 [2021-11-22 15:35:58,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:35:58,420 INFO L470 AbstractCegarLoop]: Abstraction has 5190 states and 7484 transitions. [2021-11-22 15:35:58,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:35:58,420 INFO L276 IsEmpty]: Start isEmpty. Operand 5190 states and 7484 transitions. [2021-11-22 15:35:58,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-22 15:35:58,422 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:35:58,422 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:35:58,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-22 15:35:58,422 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:35:58,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:58,423 INFO L85 PathProgramCache]: Analyzing trace with hash -176427289, now seen corresponding path program 1 times [2021-11-22 15:35:58,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:58,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553542109] [2021-11-22 15:35:58,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:58,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:58,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:58,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:58,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:35:58,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553542109] [2021-11-22 15:35:58,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553542109] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:58,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:58,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-22 15:35:58,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82004505] [2021-11-22 15:35:58,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:58,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-22 15:35:58,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:35:58,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-22 15:35:58,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-22 15:35:58,869 INFO L87 Difference]: Start difference. First operand 5190 states and 7484 transitions. Second operand has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 14 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:36:13,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:36:13,337 INFO L93 Difference]: Finished difference Result 31159 states and 45275 transitions. [2021-11-22 15:36:13,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-22 15:36:13,337 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 14 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-22 15:36:13,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:36:13,369 INFO L225 Difference]: With dead ends: 31159 [2021-11-22 15:36:13,369 INFO L226 Difference]: Without dead ends: 29973 [2021-11-22 15:36:13,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2021-11-22 15:36:13,377 INFO L933 BasicCegarLoop]: 578 mSDtfsCounter, 1749 mSDsluCounter, 3494 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1749 SdHoareTripleChecker+Valid, 4072 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 15:36:13,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1749 Valid, 4072 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 15:36:13,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29973 states. [2021-11-22 15:36:16,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29973 to 5176. [2021-11-22 15:36:16,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5176 states, 5175 states have (on average 1.4419323671497584) internal successors, (7462), 5175 states have internal predecessors, (7462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:36:16,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5176 states to 5176 states and 7462 transitions. [2021-11-22 15:36:16,119 INFO L78 Accepts]: Start accepts. Automaton has 5176 states and 7462 transitions. Word has length 124 [2021-11-22 15:36:16,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:36:16,119 INFO L470 AbstractCegarLoop]: Abstraction has 5176 states and 7462 transitions. [2021-11-22 15:36:16,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 14 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:36:16,119 INFO L276 IsEmpty]: Start isEmpty. Operand 5176 states and 7462 transitions. [2021-11-22 15:36:16,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-22 15:36:16,120 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:36:16,120 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:36:16,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-22 15:36:16,121 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:36:16,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:36:16,121 INFO L85 PathProgramCache]: Analyzing trace with hash 175617129, now seen corresponding path program 1 times [2021-11-22 15:36:16,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:36:16,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603056913] [2021-11-22 15:36:16,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:36:16,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:36:16,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:36:17,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:36:17,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:36:17,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603056913] [2021-11-22 15:36:17,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603056913] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:36:17,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:36:17,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-11-22 15:36:17,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714768763] [2021-11-22 15:36:17,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:36:17,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-22 15:36:17,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:36:17,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-22 15:36:17,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-11-22 15:36:17,314 INFO L87 Difference]: Start difference. First operand 5176 states and 7462 transitions. Second operand has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:36:38,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:36:38,142 INFO L93 Difference]: Finished difference Result 29796 states and 43265 transitions. [2021-11-22 15:36:38,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-22 15:36:38,143 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-22 15:36:38,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:36:38,179 INFO L225 Difference]: With dead ends: 29796 [2021-11-22 15:36:38,179 INFO L226 Difference]: Without dead ends: 28610 [2021-11-22 15:36:38,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=592, Invalid=2600, Unknown=0, NotChecked=0, Total=3192 [2021-11-22 15:36:38,187 INFO L933 BasicCegarLoop]: 749 mSDtfsCounter, 3010 mSDsluCounter, 9391 mSDsCounter, 0 mSdLazyCounter, 2939 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3010 SdHoareTripleChecker+Valid, 10140 SdHoareTripleChecker+Invalid, 3009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 2939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:36:38,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3010 Valid, 10140 Invalid, 3009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 2939 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-22 15:36:38,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28610 states. [2021-11-22 15:36:41,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28610 to 5184. [2021-11-22 15:36:41,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5184 states, 5183 states have (on average 1.4412502411730659) internal successors, (7470), 5183 states have internal predecessors, (7470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:36:41,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5184 states to 5184 states and 7470 transitions. [2021-11-22 15:36:41,302 INFO L78 Accepts]: Start accepts. Automaton has 5184 states and 7470 transitions. Word has length 124 [2021-11-22 15:36:41,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:36:41,302 INFO L470 AbstractCegarLoop]: Abstraction has 5184 states and 7470 transitions. [2021-11-22 15:36:41,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:36:41,302 INFO L276 IsEmpty]: Start isEmpty. Operand 5184 states and 7470 transitions. [2021-11-22 15:36:41,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-22 15:36:41,304 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:36:41,304 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:36:41,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-22 15:36:41,305 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:36:41,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:36:41,305 INFO L85 PathProgramCache]: Analyzing trace with hash -865424790, now seen corresponding path program 1 times [2021-11-22 15:36:41,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:36:41,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778591770] [2021-11-22 15:36:41,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:36:41,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:36:41,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:36:41,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:36:41,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:36:41,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778591770] [2021-11-22 15:36:41,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778591770] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:36:41,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:36:41,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-22 15:36:41,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980802839] [2021-11-22 15:36:41,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:36:41,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-22 15:36:41,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:36:41,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-22 15:36:41,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-22 15:36:41,702 INFO L87 Difference]: Start difference. First operand 5184 states and 7470 transitions. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:37:00,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:37:00,776 INFO L93 Difference]: Finished difference Result 30996 states and 45057 transitions. [2021-11-22 15:37:00,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-22 15:37:00,777 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-22 15:37:00,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:37:00,812 INFO L225 Difference]: With dead ends: 30996 [2021-11-22 15:37:00,812 INFO L226 Difference]: Without dead ends: 29781 [2021-11-22 15:37:00,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=173, Invalid=427, Unknown=0, NotChecked=0, Total=600 [2021-11-22 15:37:00,819 INFO L933 BasicCegarLoop]: 575 mSDtfsCounter, 1591 mSDsluCounter, 2149 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1591 SdHoareTripleChecker+Valid, 2724 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:37:00,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1591 Valid, 2724 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 15:37:00,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29781 states. [2021-11-22 15:37:04,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29781 to 5136. [2021-11-22 15:37:04,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5136 states, 5135 states have (on average 1.4428432327166505) internal successors, (7409), 5135 states have internal predecessors, (7409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:37:04,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5136 states to 5136 states and 7409 transitions. [2021-11-22 15:37:04,085 INFO L78 Accepts]: Start accepts. Automaton has 5136 states and 7409 transitions. Word has length 124 [2021-11-22 15:37:04,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:37:04,086 INFO L470 AbstractCegarLoop]: Abstraction has 5136 states and 7409 transitions. [2021-11-22 15:37:04,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:37:04,086 INFO L276 IsEmpty]: Start isEmpty. Operand 5136 states and 7409 transitions. [2021-11-22 15:37:04,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-22 15:37:04,087 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:37:04,087 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:37:04,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-22 15:37:04,087 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:37:04,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:37:04,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1950133896, now seen corresponding path program 1 times [2021-11-22 15:37:04,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:37:04,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750185144] [2021-11-22 15:37:04,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:37:04,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:37:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:37:04,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:37:04,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:37:04,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750185144] [2021-11-22 15:37:04,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750185144] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:37:04,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:37:04,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-22 15:37:04,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369074483] [2021-11-22 15:37:04,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:37:04,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-22 15:37:04,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:37:04,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-22 15:37:04,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-22 15:37:04,540 INFO L87 Difference]: Start difference. First operand 5136 states and 7409 transitions. Second operand has 14 states, 14 states have (on average 8.928571428571429) internal successors, (125), 14 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:37:27,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:37:27,222 INFO L93 Difference]: Finished difference Result 30956 states and 45001 transitions. [2021-11-22 15:37:27,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-22 15:37:27,223 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.928571428571429) internal successors, (125), 14 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-22 15:37:27,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:37:27,264 INFO L225 Difference]: With dead ends: 30956 [2021-11-22 15:37:27,264 INFO L226 Difference]: Without dead ends: 29763 [2021-11-22 15:37:27,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2021-11-22 15:37:27,271 INFO L933 BasicCegarLoop]: 566 mSDtfsCounter, 1849 mSDsluCounter, 3635 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1849 SdHoareTripleChecker+Valid, 4201 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 15:37:27,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1849 Valid, 4201 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 15:37:27,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29763 states. [2021-11-22 15:37:31,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29763 to 5104. [2021-11-22 15:37:31,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5104 states, 5103 states have (on average 1.443856554967666) internal successors, (7368), 5103 states have internal predecessors, (7368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:37:31,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5104 states to 5104 states and 7368 transitions. [2021-11-22 15:37:31,496 INFO L78 Accepts]: Start accepts. Automaton has 5104 states and 7368 transitions. Word has length 125 [2021-11-22 15:37:31,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:37:31,497 INFO L470 AbstractCegarLoop]: Abstraction has 5104 states and 7368 transitions. [2021-11-22 15:37:31,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.928571428571429) internal successors, (125), 14 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:37:31,497 INFO L276 IsEmpty]: Start isEmpty. Operand 5104 states and 7368 transitions. [2021-11-22 15:37:31,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-22 15:37:31,497 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:37:31,498 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:37:31,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-22 15:37:31,498 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:37:31,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:37:31,498 INFO L85 PathProgramCache]: Analyzing trace with hash -270513254, now seen corresponding path program 1 times [2021-11-22 15:37:31,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:37:31,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570837073] [2021-11-22 15:37:31,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:37:31,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:37:31,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:37:31,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:37:31,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:37:31,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570837073] [2021-11-22 15:37:31,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570837073] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:37:31,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:37:31,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-22 15:37:31,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452325675] [2021-11-22 15:37:31,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:37:31,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-22 15:37:31,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:37:31,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-22 15:37:31,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-11-22 15:37:31,975 INFO L87 Difference]: Start difference. First operand 5104 states and 7368 transitions. Second operand has 13 states, 13 states have (on average 9.615384615384615) internal successors, (125), 13 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:37:50,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:37:50,743 INFO L93 Difference]: Finished difference Result 21038 states and 30572 transitions. [2021-11-22 15:37:50,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-22 15:37:50,743 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.615384615384615) internal successors, (125), 13 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-22 15:37:50,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:37:50,768 INFO L225 Difference]: With dead ends: 21038 [2021-11-22 15:37:50,768 INFO L226 Difference]: Without dead ends: 19866 [2021-11-22 15:37:50,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2021-11-22 15:37:50,776 INFO L933 BasicCegarLoop]: 550 mSDtfsCounter, 1481 mSDsluCounter, 2517 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 3067 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:37:50,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1481 Valid, 3067 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 15:37:50,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19866 states. [2021-11-22 15:37:55,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19866 to 5089. [2021-11-22 15:37:55,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5089 states, 5088 states have (on average 1.4445754716981132) internal successors, (7350), 5088 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:37:55,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5089 states to 5089 states and 7350 transitions. [2021-11-22 15:37:55,452 INFO L78 Accepts]: Start accepts. Automaton has 5089 states and 7350 transitions. Word has length 125 [2021-11-22 15:37:55,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:37:55,453 INFO L470 AbstractCegarLoop]: Abstraction has 5089 states and 7350 transitions. [2021-11-22 15:37:55,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.615384615384615) internal successors, (125), 13 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:37:55,453 INFO L276 IsEmpty]: Start isEmpty. Operand 5089 states and 7350 transitions. [2021-11-22 15:37:55,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-22 15:37:55,454 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:37:55,454 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:37:55,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-22 15:37:55,455 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:37:55,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:37:55,455 INFO L85 PathProgramCache]: Analyzing trace with hash 419086208, now seen corresponding path program 1 times [2021-11-22 15:37:55,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:37:55,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744906197] [2021-11-22 15:37:55,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:37:55,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:37:55,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:37:56,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:37:56,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:37:56,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744906197] [2021-11-22 15:37:56,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744906197] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:37:56,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:37:56,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-22 15:37:56,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764033443] [2021-11-22 15:37:56,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:37:56,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-22 15:37:56,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:37:56,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-22 15:37:56,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-22 15:37:56,041 INFO L87 Difference]: Start difference. First operand 5089 states and 7350 transitions. Second operand has 14 states, 14 states have (on average 8.928571428571429) internal successors, (125), 14 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:38:26,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:38:26,749 INFO L93 Difference]: Finished difference Result 31645 states and 45938 transitions. [2021-11-22 15:38:26,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-22 15:38:26,749 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.928571428571429) internal successors, (125), 14 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-22 15:38:26,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:38:26,789 INFO L225 Difference]: With dead ends: 31645 [2021-11-22 15:38:26,789 INFO L226 Difference]: Without dead ends: 30487 [2021-11-22 15:38:26,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=220, Invalid=710, Unknown=0, NotChecked=0, Total=930 [2021-11-22 15:38:26,796 INFO L933 BasicCegarLoop]: 544 mSDtfsCounter, 1823 mSDsluCounter, 4494 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1823 SdHoareTripleChecker+Valid, 5038 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-22 15:38:26,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1823 Valid, 5038 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-22 15:38:26,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30487 states. [2021-11-22 15:38:31,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30487 to 5092. [2021-11-22 15:38:31,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5092 states, 5091 states have (on average 1.444706344529562) internal successors, (7355), 5091 states have internal predecessors, (7355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:38:31,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5092 states to 5092 states and 7355 transitions. [2021-11-22 15:38:31,691 INFO L78 Accepts]: Start accepts. Automaton has 5092 states and 7355 transitions. Word has length 125 [2021-11-22 15:38:31,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:38:31,691 INFO L470 AbstractCegarLoop]: Abstraction has 5092 states and 7355 transitions. [2021-11-22 15:38:31,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.928571428571429) internal successors, (125), 14 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:38:31,691 INFO L276 IsEmpty]: Start isEmpty. Operand 5092 states and 7355 transitions. [2021-11-22 15:38:31,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-22 15:38:31,692 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:38:31,692 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:38:31,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-22 15:38:31,692 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:38:31,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:38:31,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1295387761, now seen corresponding path program 1 times [2021-11-22 15:38:31,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:38:31,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299938887] [2021-11-22 15:38:31,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:38:31,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:38:31,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:38:31,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:38:31,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:38:31,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299938887] [2021-11-22 15:38:31,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299938887] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:38:31,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:38:31,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:38:31,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298064935] [2021-11-22 15:38:31,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:38:31,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:38:31,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:38:31,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:38:31,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:38:31,804 INFO L87 Difference]: Start difference. First operand 5092 states and 7355 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:38:38,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:38:38,810 INFO L93 Difference]: Finished difference Result 12094 states and 17562 transitions. [2021-11-22 15:38:38,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:38:38,810 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2021-11-22 15:38:38,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:38:38,819 INFO L225 Difference]: With dead ends: 12094 [2021-11-22 15:38:38,819 INFO L226 Difference]: Without dead ends: 7180 [2021-11-22 15:38:38,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:38:38,826 INFO L933 BasicCegarLoop]: 325 mSDtfsCounter, 199 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:38:38,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 678 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:38:38,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7180 states. [2021-11-22 15:38:45,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7180 to 7178. [2021-11-22 15:38:45,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7178 states, 7177 states have (on average 1.4429427337327574) internal successors, (10356), 7177 states have internal predecessors, (10356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:38:45,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7178 states to 7178 states and 10356 transitions. [2021-11-22 15:38:45,705 INFO L78 Accepts]: Start accepts. Automaton has 7178 states and 10356 transitions. Word has length 126 [2021-11-22 15:38:45,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:38:45,706 INFO L470 AbstractCegarLoop]: Abstraction has 7178 states and 10356 transitions. [2021-11-22 15:38:45,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:38:45,706 INFO L276 IsEmpty]: Start isEmpty. Operand 7178 states and 10356 transitions. [2021-11-22 15:38:45,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-22 15:38:45,707 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:38:45,707 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:38:45,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-22 15:38:45,708 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:38:45,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:38:45,708 INFO L85 PathProgramCache]: Analyzing trace with hash 758576649, now seen corresponding path program 1 times [2021-11-22 15:38:45,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:38:45,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765223141] [2021-11-22 15:38:45,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:38:45,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:38:45,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:38:46,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:38:46,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:38:46,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765223141] [2021-11-22 15:38:46,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765223141] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:38:46,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:38:46,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-22 15:38:46,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082262733] [2021-11-22 15:38:46,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:38:46,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-22 15:38:46,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:38:46,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-22 15:38:46,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-11-22 15:38:46,625 INFO L87 Difference]: Start difference. First operand 7178 states and 10356 transitions. Second operand has 18 states, 18 states have (on average 7.0) internal successors, (126), 18 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:39:26,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:39:26,848 INFO L93 Difference]: Finished difference Result 36865 states and 53430 transitions. [2021-11-22 15:39:26,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-22 15:39:26,848 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 7.0) internal successors, (126), 18 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2021-11-22 15:39:26,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:39:26,898 INFO L225 Difference]: With dead ends: 36865 [2021-11-22 15:39:26,898 INFO L226 Difference]: Without dead ends: 35129 [2021-11-22 15:39:26,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=352, Invalid=1370, Unknown=0, NotChecked=0, Total=1722 [2021-11-22 15:39:26,908 INFO L933 BasicCegarLoop]: 614 mSDtfsCounter, 2205 mSDsluCounter, 5609 mSDsCounter, 0 mSdLazyCounter, 1352 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2205 SdHoareTripleChecker+Valid, 6223 SdHoareTripleChecker+Invalid, 1393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:39:26,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2205 Valid, 6223 Invalid, 1393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1352 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-22 15:39:26,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35129 states. [2021-11-22 15:39:35,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35129 to 7173. [2021-11-22 15:39:35,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7173 states, 7172 states have (on average 1.4429726715002789) internal successors, (10349), 7172 states have internal predecessors, (10349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:39:35,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7173 states to 7173 states and 10349 transitions. [2021-11-22 15:39:35,175 INFO L78 Accepts]: Start accepts. Automaton has 7173 states and 10349 transitions. Word has length 126 [2021-11-22 15:39:35,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:39:35,176 INFO L470 AbstractCegarLoop]: Abstraction has 7173 states and 10349 transitions. [2021-11-22 15:39:35,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.0) internal successors, (126), 18 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:39:35,176 INFO L276 IsEmpty]: Start isEmpty. Operand 7173 states and 10349 transitions. [2021-11-22 15:39:35,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-22 15:39:35,177 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:39:35,177 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:39:35,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-22 15:39:35,177 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:39:35,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:39:35,178 INFO L85 PathProgramCache]: Analyzing trace with hash 164309994, now seen corresponding path program 1 times [2021-11-22 15:39:35,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:39:35,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004180379] [2021-11-22 15:39:35,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:39:35,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:39:35,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:39:36,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:39:36,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:39:36,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004180379] [2021-11-22 15:39:36,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004180379] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:39:36,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:39:36,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-22 15:39:36,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058798253] [2021-11-22 15:39:36,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:39:36,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-22 15:39:36,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:39:36,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-22 15:39:36,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2021-11-22 15:39:36,055 INFO L87 Difference]: Start difference. First operand 7173 states and 10349 transitions. Second operand has 19 states, 19 states have (on average 6.631578947368421) internal successors, (126), 19 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:40:08,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:40:08,500 INFO L93 Difference]: Finished difference Result 29966 states and 43414 transitions. [2021-11-22 15:40:08,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-22 15:40:08,500 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.631578947368421) internal successors, (126), 19 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2021-11-22 15:40:08,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:40:08,533 INFO L225 Difference]: With dead ends: 29966 [2021-11-22 15:40:08,533 INFO L226 Difference]: Without dead ends: 28223 [2021-11-22 15:40:08,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=373, Invalid=1349, Unknown=0, NotChecked=0, Total=1722 [2021-11-22 15:40:08,539 INFO L933 BasicCegarLoop]: 589 mSDtfsCounter, 1812 mSDsluCounter, 5167 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1812 SdHoareTripleChecker+Valid, 5756 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-22 15:40:08,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1812 Valid, 5756 Invalid, 1324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1278 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-22 15:40:08,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28223 states. [2021-11-22 15:40:16,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28223 to 7148. [2021-11-22 15:40:16,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7148 states, 7147 states have (on average 1.4439625017489857) internal successors, (10320), 7147 states have internal predecessors, (10320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:40:16,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7148 states to 7148 states and 10320 transitions. [2021-11-22 15:40:16,076 INFO L78 Accepts]: Start accepts. Automaton has 7148 states and 10320 transitions. Word has length 126 [2021-11-22 15:40:16,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:40:16,076 INFO L470 AbstractCegarLoop]: Abstraction has 7148 states and 10320 transitions. [2021-11-22 15:40:16,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.631578947368421) internal successors, (126), 19 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:40:16,077 INFO L276 IsEmpty]: Start isEmpty. Operand 7148 states and 10320 transitions. [2021-11-22 15:40:16,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-22 15:40:16,080 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:40:16,080 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:40:16,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-22 15:40:16,081 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:40:16,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:40:16,082 INFO L85 PathProgramCache]: Analyzing trace with hash 761494974, now seen corresponding path program 1 times [2021-11-22 15:40:16,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:40:16,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488231844] [2021-11-22 15:40:16,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:40:16,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:40:16,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:40:16,160 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:40:16,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:40:16,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488231844] [2021-11-22 15:40:16,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488231844] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:40:16,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:40:16,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:40:16,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724061811] [2021-11-22 15:40:16,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:40:16,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:40:16,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:40:16,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:40:16,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:40:16,164 INFO L87 Difference]: Start difference. First operand 7148 states and 10320 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:40:26,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:40:26,427 INFO L93 Difference]: Finished difference Result 14814 states and 21439 transitions. [2021-11-22 15:40:26,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:40:26,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 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 162 [2021-11-22 15:40:26,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:40:26,438 INFO L225 Difference]: With dead ends: 14814 [2021-11-22 15:40:26,438 INFO L226 Difference]: Without dead ends: 9900 [2021-11-22 15:40:26,442 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 [2021-11-22 15:40:26,443 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 108 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:40:26,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 536 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:40:26,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9900 states. [2021-11-22 15:40:36,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9900 to 9622. [2021-11-22 15:40:36,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9622 states, 9621 states have (on average 1.4411183868620725) internal successors, (13865), 9621 states have internal predecessors, (13865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:40:36,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9622 states to 9622 states and 13865 transitions. [2021-11-22 15:40:36,169 INFO L78 Accepts]: Start accepts. Automaton has 9622 states and 13865 transitions. Word has length 162 [2021-11-22 15:40:36,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:40:36,169 INFO L470 AbstractCegarLoop]: Abstraction has 9622 states and 13865 transitions. [2021-11-22 15:40:36,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:40:36,170 INFO L276 IsEmpty]: Start isEmpty. Operand 9622 states and 13865 transitions. [2021-11-22 15:40:36,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-22 15:40:36,171 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:40:36,171 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:40:36,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-22 15:40:36,172 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:40:36,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:40:36,172 INFO L85 PathProgramCache]: Analyzing trace with hash 397260735, now seen corresponding path program 1 times [2021-11-22 15:40:36,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:40:36,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276111699] [2021-11-22 15:40:36,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:40:36,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:40:36,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:40:36,282 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:40:36,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:40:36,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276111699] [2021-11-22 15:40:36,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276111699] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:40:36,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:40:36,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 15:40:36,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521685874] [2021-11-22 15:40:36,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:40:36,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 15:40:36,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:40:36,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 15:40:36,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:40:36,285 INFO L87 Difference]: Start difference. First operand 9622 states and 13865 transitions. Second operand has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 6 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:30,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:41:30,359 INFO L93 Difference]: Finished difference Result 58038 states and 83825 transitions. [2021-11-22 15:41:30,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-22 15:41:30,359 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 6 states have internal predecessors, (164), 0 states have call successors, (0), 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 164 [2021-11-22 15:41:30,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:41:30,438 INFO L225 Difference]: With dead ends: 58038 [2021-11-22 15:41:30,438 INFO L226 Difference]: Without dead ends: 48574 [2021-11-22 15:41:30,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-11-22 15:41:30,455 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 2360 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2360 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 15:41:30,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2360 Valid, 503 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 15:41:30,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48574 states. [2021-11-22 15:41:54,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48574 to 20404. [2021-11-22 15:41:54,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20404 states, 20403 states have (on average 1.4413076508356615) internal successors, (29407), 20403 states have internal predecessors, (29407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:54,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20404 states to 20404 states and 29407 transitions. [2021-11-22 15:41:54,825 INFO L78 Accepts]: Start accepts. Automaton has 20404 states and 29407 transitions. Word has length 164 [2021-11-22 15:41:54,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:41:54,825 INFO L470 AbstractCegarLoop]: Abstraction has 20404 states and 29407 transitions. [2021-11-22 15:41:54,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 6 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:54,825 INFO L276 IsEmpty]: Start isEmpty. Operand 20404 states and 29407 transitions. [2021-11-22 15:41:54,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-22 15:41:54,827 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:41:54,827 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:41:54,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-22 15:41:54,827 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:41:54,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:41:54,828 INFO L85 PathProgramCache]: Analyzing trace with hash -149727565, now seen corresponding path program 1 times [2021-11-22 15:41:54,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:41:54,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964135257] [2021-11-22 15:41:54,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:41:54,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:41:54,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:41:54,934 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:41:54,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:41:54,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964135257] [2021-11-22 15:41:54,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964135257] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:41:54,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:41:54,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 15:41:54,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449463084] [2021-11-22 15:41:54,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:41:54,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 15:41:54,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:41:54,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 15:41:54,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:41:54,937 INFO L87 Difference]: Start difference. First operand 20404 states and 29407 transitions. Second operand has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 6 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:43,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:43:43,482 INFO L93 Difference]: Finished difference Result 117228 states and 168795 transitions. [2021-11-22 15:43:43,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-22 15:43:43,483 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 6 states have internal predecessors, (164), 0 states have call successors, (0), 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 164 [2021-11-22 15:43:43,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:43:43,648 INFO L225 Difference]: With dead ends: 117228 [2021-11-22 15:43:43,648 INFO L226 Difference]: Without dead ends: 96982 [2021-11-22 15:43:43,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-11-22 15:43:43,683 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 2193 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2193 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 15:43:43,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2193 Valid, 507 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 15:43:43,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96982 states. [2021-11-22 15:44:29,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96982 to 43288. [2021-11-22 15:44:29,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43288 states, 43287 states have (on average 1.4401321412895327) internal successors, (62339), 43287 states have internal predecessors, (62339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:44:29,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43288 states to 43288 states and 62339 transitions. [2021-11-22 15:44:29,703 INFO L78 Accepts]: Start accepts. Automaton has 43288 states and 62339 transitions. Word has length 164 [2021-11-22 15:44:29,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:44:29,703 INFO L470 AbstractCegarLoop]: Abstraction has 43288 states and 62339 transitions. [2021-11-22 15:44:29,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 6 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:44:29,704 INFO L276 IsEmpty]: Start isEmpty. Operand 43288 states and 62339 transitions. [2021-11-22 15:44:29,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-22 15:44:29,707 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:44:29,707 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:44:29,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-22 15:44:29,708 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:44:29,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:44:29,708 INFO L85 PathProgramCache]: Analyzing trace with hash 14329511, now seen corresponding path program 1 times [2021-11-22 15:44:29,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:44:29,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009923556] [2021-11-22 15:44:29,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:44:29,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:44:29,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:44:29,818 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:44:29,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:44:29,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009923556] [2021-11-22 15:44:29,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009923556] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:44:29,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:44:29,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 15:44:29,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631858171] [2021-11-22 15:44:29,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:44:29,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 15:44:29,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:44:29,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 15:44:29,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:44:29,822 INFO L87 Difference]: Start difference. First operand 43288 states and 62339 transitions. Second operand has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 6 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)