./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label00.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_6749cd32-f487-417c-8d61-789a08ec4954/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6749cd32-f487-417c-8d61-789a08ec4954/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_6749cd32-f487-417c-8d61-789a08ec4954/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6749cd32-f487-417c-8d61-789a08ec4954/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label00.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6749cd32-f487-417c-8d61-789a08ec4954/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_6749cd32-f487-417c-8d61-789a08ec4954/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 20025fac013e77bf351668a052bdb564d6775aff19a4e261b865358b141f59ba --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:06:59,530 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:06:59,533 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:06:59,601 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:06:59,603 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:06:59,609 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:06:59,611 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:06:59,615 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:06:59,618 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:06:59,626 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:06:59,627 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:06:59,629 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:06:59,630 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:06:59,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:06:59,635 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:06:59,642 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:06:59,644 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:06:59,645 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:06:59,648 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:06:59,656 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:06:59,659 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:06:59,665 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:06:59,668 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:06:59,670 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:06:59,674 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:06:59,674 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:06:59,675 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:06:59,677 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:06:59,678 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:06:59,679 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:06:59,680 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:06:59,681 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:06:59,683 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:06:59,684 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:06:59,686 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:06:59,686 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:06:59,687 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:06:59,688 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:06:59,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:06:59,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:06:59,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:06:59,691 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6749cd32-f487-417c-8d61-789a08ec4954/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 15:06:59,735 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:06:59,735 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:06:59,736 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:06:59,736 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:06:59,744 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:06:59,744 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:06:59,744 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:06:59,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:06:59,745 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:06:59,745 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:06:59,746 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:06:59,747 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:06:59,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 15:06:59,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:06:59,747 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 15:06:59,748 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:06:59,748 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:06:59,748 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:06:59,748 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 15:06:59,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:06:59,749 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:06:59,749 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:06:59,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:06:59,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:06:59,750 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:06:59,750 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 15:06:59,751 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:06:59,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 15:06:59,751 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 15:06:59,751 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 15:06:59,752 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 15:06:59,752 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:06:59,752 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_6749cd32-f487-417c-8d61-789a08ec4954/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6749cd32-f487-417c-8d61-789a08ec4954/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20025fac013e77bf351668a052bdb564d6775aff19a4e261b865358b141f59ba [2021-11-22 15:07:00,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:07:00,111 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:07:00,115 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:07:00,116 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:07:00,117 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:07:00,118 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6749cd32-f487-417c-8d61-789a08ec4954/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label00.c [2021-11-22 15:07:00,188 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6749cd32-f487-417c-8d61-789a08ec4954/bin/uautomizer-w2VwFs6gM0/data/0c5b5fd93/a6e326a1d05e436d8820333f0581e224/FLAGd96a717f7 [2021-11-22 15:07:01,144 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:07:01,145 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6749cd32-f487-417c-8d61-789a08ec4954/sv-benchmarks/c/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label00.c [2021-11-22 15:07:01,188 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6749cd32-f487-417c-8d61-789a08ec4954/bin/uautomizer-w2VwFs6gM0/data/0c5b5fd93/a6e326a1d05e436d8820333f0581e224/FLAGd96a717f7 [2021-11-22 15:07:01,588 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6749cd32-f487-417c-8d61-789a08ec4954/bin/uautomizer-w2VwFs6gM0/data/0c5b5fd93/a6e326a1d05e436d8820333f0581e224 [2021-11-22 15:07:01,590 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:07:01,592 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:07:01,594 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:07:01,594 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:07:01,598 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:07:01,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:07:01" (1/1) ... [2021-11-22 15:07:01,601 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fb23b47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:07:01, skipping insertion in model container [2021-11-22 15:07:01,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:07:01" (1/1) ... [2021-11-22 15:07:01,609 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:07:01,755 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:07:02,301 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_6749cd32-f487-417c-8d61-789a08ec4954/sv-benchmarks/c/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label00.c[20426,20439] [2021-11-22 15:07:02,346 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_6749cd32-f487-417c-8d61-789a08ec4954/sv-benchmarks/c/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label00.c[22301,22314] [2021-11-22 15:07:03,256 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:07:03,268 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:07:03,338 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_6749cd32-f487-417c-8d61-789a08ec4954/sv-benchmarks/c/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label00.c[20426,20439] [2021-11-22 15:07:03,344 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_6749cd32-f487-417c-8d61-789a08ec4954/sv-benchmarks/c/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label00.c[22301,22314] [2021-11-22 15:07:03,979 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:07:04,013 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:07:04,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:07:04 WrapperNode [2021-11-22 15:07:04,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:07:04,015 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:07:04,015 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:07:04,015 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:07:04,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:07:04" (1/1) ... [2021-11-22 15:07:04,092 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:07:04" (1/1) ... [2021-11-22 15:07:04,605 INFO L137 Inliner]: procedures = 38, calls = 24, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5210 [2021-11-22 15:07:04,606 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:07:04,607 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:07:04,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:07:04,622 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:07:04,631 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:07:04" (1/1) ... [2021-11-22 15:07:04,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:07:04" (1/1) ... [2021-11-22 15:07:04,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:07:04" (1/1) ... [2021-11-22 15:07:04,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:07:04" (1/1) ... [2021-11-22 15:07:04,975 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:07:04" (1/1) ... [2021-11-22 15:07:05,036 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:07:04" (1/1) ... [2021-11-22 15:07:05,067 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:07:04" (1/1) ... [2021-11-22 15:07:05,149 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:07:05,163 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:07:05,163 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:07:05,163 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:07:05,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:07:04" (1/1) ... [2021-11-22 15:07:05,174 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:07:05,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6749cd32-f487-417c-8d61-789a08ec4954/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:07:05,220 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6749cd32-f487-417c-8d61-789a08ec4954/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:07:05,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6749cd32-f487-417c-8d61-789a08ec4954/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:07:05,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:07:05,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 15:07:05,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:07:05,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:07:05,383 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:07:05,385 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:07:10,119 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:07:10,138 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:07:10,139 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-22 15:07:10,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:07:10 BoogieIcfgContainer [2021-11-22 15:07:10,143 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:07:10,145 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:07:10,145 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:07:10,149 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:07:10,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:07:01" (1/3) ... [2021-11-22 15:07:10,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c4591b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:07:10, skipping insertion in model container [2021-11-22 15:07:10,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:07:04" (2/3) ... [2021-11-22 15:07:10,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c4591b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:07:10, skipping insertion in model container [2021-11-22 15:07:10,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:07:10" (3/3) ... [2021-11-22 15:07:10,152 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label00.c [2021-11-22 15:07:10,158 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:07:10,158 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-22 15:07:10,235 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:07:10,241 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 15:07:10,242 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-22 15:07:10,299 INFO L276 IsEmpty]: Start isEmpty. Operand has 944 states, 941 states have (on average 1.8979808714133901) internal successors, (1786), 943 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:07:10,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-22 15:07:10,307 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:07:10,308 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:07:10,308 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:07:10,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:07:10,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1352241867, now seen corresponding path program 1 times [2021-11-22 15:07:10,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:07:10,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496992818] [2021-11-22 15:07:10,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:07:10,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:07:10,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:07:10,543 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 15:07:10,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:07:10,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496992818] [2021-11-22 15:07:10,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496992818] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:07:10,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:07:10,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:07:10,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316955456] [2021-11-22 15:07:10,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:07:10,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:07:10,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:07:10,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:07:10,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:07:10,597 INFO L87 Difference]: Start difference. First operand has 944 states, 941 states have (on average 1.8979808714133901) internal successors, (1786), 943 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 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 15:07:15,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:07:15,094 INFO L93 Difference]: Finished difference Result 2587 states and 4966 transitions. [2021-11-22 15:07:15,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:07:15,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2021-11-22 15:07:15,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:07:15,139 INFO L225 Difference]: With dead ends: 2587 [2021-11-22 15:07:15,140 INFO L226 Difference]: Without dead ends: 1629 [2021-11-22 15:07:15,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:07:15,152 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 1099 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2437 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1099 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 3208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 2437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:07:15,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1099 Valid, 375 Invalid, 3208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 2437 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-11-22 15:07:15,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2021-11-22 15:07:15,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1629. [2021-11-22 15:07:15,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1629 states, 1627 states have (on average 1.8389674247080516) internal successors, (2992), 1628 states have internal predecessors, (2992), 0 states have call successors, (0), 0 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 15:07:15,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 2992 transitions. [2021-11-22 15:07:15,278 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 2992 transitions. Word has length 16 [2021-11-22 15:07:15,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:07:15,278 INFO L470 AbstractCegarLoop]: Abstraction has 1629 states and 2992 transitions. [2021-11-22 15:07:15,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 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 15:07:15,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 2992 transitions. [2021-11-22 15:07:15,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-22 15:07:15,281 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:07:15,282 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:07:15,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 15:07:15,283 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:07:15,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:07:15,284 INFO L85 PathProgramCache]: Analyzing trace with hash 325703937, now seen corresponding path program 1 times [2021-11-22 15:07:15,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:07:15,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077901654] [2021-11-22 15:07:15,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:07:15,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:07:15,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:07:15,581 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 15:07:15,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:07:15,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077901654] [2021-11-22 15:07:15,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077901654] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:07:15,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:07:15,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:07:15,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689391500] [2021-11-22 15:07:15,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:07:15,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:07:15,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:07:15,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:07:15,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:07:15,592 INFO L87 Difference]: Start difference. First operand 1629 states and 2992 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:07:15,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:07:15,748 INFO L93 Difference]: Finished difference Result 1701 states and 3104 transitions. [2021-11-22 15:07:15,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:07:15,749 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-22 15:07:15,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:07:15,760 INFO L225 Difference]: With dead ends: 1701 [2021-11-22 15:07:15,761 INFO L226 Difference]: Without dead ends: 1629 [2021-11-22 15:07:15,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:07:15,768 INFO L933 BasicCegarLoop]: 1651 mSDtfsCounter, 3 mSDsluCounter, 4900 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6551 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:07:15,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6551 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:07:15,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2021-11-22 15:07:15,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1629. [2021-11-22 15:07:15,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1629 states, 1627 states have (on average 1.8082360172095882) internal successors, (2942), 1628 states have internal predecessors, (2942), 0 states have call successors, (0), 0 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 15:07:15,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 2942 transitions. [2021-11-22 15:07:15,822 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 2942 transitions. Word has length 42 [2021-11-22 15:07:15,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:07:15,823 INFO L470 AbstractCegarLoop]: Abstraction has 1629 states and 2942 transitions. [2021-11-22 15:07:15,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:07:15,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 2942 transitions. [2021-11-22 15:07:15,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-22 15:07:15,835 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:07:15,837 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:07:15,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 15:07:15,840 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:07:15,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:07:15,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1547238475, now seen corresponding path program 1 times [2021-11-22 15:07:15,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:07:15,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381921328] [2021-11-22 15:07:15,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:07:15,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:07:15,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:07:16,018 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:07:16,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:07:16,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381921328] [2021-11-22 15:07:16,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381921328] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:07:16,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:07:16,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:07:16,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286104431] [2021-11-22 15:07:16,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:07:16,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:07:16,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:07:16,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:07:16,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:07:16,025 INFO L87 Difference]: Start difference. First operand 1629 states and 2942 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 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 15:07:23,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:07:23,032 INFO L93 Difference]: Finished difference Result 5388 states and 9833 transitions. [2021-11-22 15:07:23,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:07:23,036 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-11-22 15:07:23,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:07:23,060 INFO L225 Difference]: With dead ends: 5388 [2021-11-22 15:07:23,060 INFO L226 Difference]: Without dead ends: 3884 [2021-11-22 15:07:23,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:07:23,064 INFO L933 BasicCegarLoop]: 859 mSDtfsCounter, 2489 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 4807 mSolverCounterSat, 1137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2489 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 5944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1137 IncrementalHoareTripleChecker+Valid, 4807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-11-22 15:07:23,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2489 Valid, 880 Invalid, 5944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1137 Valid, 4807 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2021-11-22 15:07:23,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3884 states. [2021-11-22 15:07:23,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3884 to 3882. [2021-11-22 15:07:23,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3882 states, 3880 states have (on average 1.4257731958762887) internal successors, (5532), 3881 states have internal predecessors, (5532), 0 states have call successors, (0), 0 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 15:07:23,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3882 states to 3882 states and 5532 transitions. [2021-11-22 15:07:23,167 INFO L78 Accepts]: Start accepts. Automaton has 3882 states and 5532 transitions. Word has length 85 [2021-11-22 15:07:23,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:07:23,168 INFO L470 AbstractCegarLoop]: Abstraction has 3882 states and 5532 transitions. [2021-11-22 15:07:23,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 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 15:07:23,169 INFO L276 IsEmpty]: Start isEmpty. Operand 3882 states and 5532 transitions. [2021-11-22 15:07:23,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-22 15:07:23,170 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:07:23,170 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:07:23,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 15:07:23,171 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:07:23,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:07:23,172 INFO L85 PathProgramCache]: Analyzing trace with hash -518621894, now seen corresponding path program 1 times [2021-11-22 15:07:23,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:07:23,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326757816] [2021-11-22 15:07:23,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:07:23,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:07:23,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:07:23,280 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:07:23,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:07:23,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326757816] [2021-11-22 15:07:23,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326757816] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:07:23,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:07:23,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:07:23,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034355483] [2021-11-22 15:07:23,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:07:23,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:07:23,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:07:23,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:07:23,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:07:23,283 INFO L87 Difference]: Start difference. First operand 3882 states and 5532 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 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 15:07:26,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:07:26,354 INFO L93 Difference]: Finished difference Result 8390 states and 12916 transitions. [2021-11-22 15:07:26,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:07:26,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2021-11-22 15:07:26,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:07:26,386 INFO L225 Difference]: With dead ends: 8390 [2021-11-22 15:07:26,386 INFO L226 Difference]: Without dead ends: 5384 [2021-11-22 15:07:26,391 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 15:07:26,392 INFO L933 BasicCegarLoop]: 1134 mSDtfsCounter, 775 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 2319 mSolverCounterSat, 746 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 3065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 746 IncrementalHoareTripleChecker+Valid, 2319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-22 15:07:26,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [775 Valid, 1306 Invalid, 3065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [746 Valid, 2319 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-22 15:07:26,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5384 states. [2021-11-22 15:07:26,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5384 to 5384. [2021-11-22 15:07:26,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5384 states, 5382 states have (on average 1.4697138610182088) internal successors, (7910), 5383 states have internal predecessors, (7910), 0 states have call successors, (0), 0 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 15:07:26,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5384 states to 5384 states and 7910 transitions. [2021-11-22 15:07:26,522 INFO L78 Accepts]: Start accepts. Automaton has 5384 states and 7910 transitions. Word has length 87 [2021-11-22 15:07:26,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:07:26,523 INFO L470 AbstractCegarLoop]: Abstraction has 5384 states and 7910 transitions. [2021-11-22 15:07:26,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 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 15:07:26,524 INFO L276 IsEmpty]: Start isEmpty. Operand 5384 states and 7910 transitions. [2021-11-22 15:07:26,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-22 15:07:26,525 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:07:26,525 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:07:26,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 15:07:26,526 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:07:26,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:07:26,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1207745120, now seen corresponding path program 1 times [2021-11-22 15:07:26,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:07:26,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893148926] [2021-11-22 15:07:26,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:07:26,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:07:26,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:07:26,640 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 15:07:26,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:07:26,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893148926] [2021-11-22 15:07:26,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893148926] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:07:26,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:07:26,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:07:26,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224702657] [2021-11-22 15:07:26,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:07:26,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:07:26,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:07:26,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:07:26,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:07:26,649 INFO L87 Difference]: Start difference. First operand 5384 states and 7910 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:07:26,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:07:26,693 INFO L93 Difference]: Finished difference Result 5514 states and 8116 transitions. [2021-11-22 15:07:26,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:07:26,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-22 15:07:26,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:07:26,721 INFO L225 Difference]: With dead ends: 5514 [2021-11-22 15:07:26,722 INFO L226 Difference]: Without dead ends: 5446 [2021-11-22 15:07:26,724 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 15:07:26,726 INFO L933 BasicCegarLoop]: 1697 mSDtfsCounter, 1537 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 1803 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:07:26,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1537 Valid, 1803 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:07:26,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5446 states. [2021-11-22 15:07:26,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5446 to 5444. [2021-11-22 15:07:26,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5444 states, 5442 states have (on average 1.4711503123851526) internal successors, (8006), 5443 states have internal predecessors, (8006), 0 states have call successors, (0), 0 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 15:07:26,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5444 states to 5444 states and 8006 transitions. [2021-11-22 15:07:26,871 INFO L78 Accepts]: Start accepts. Automaton has 5444 states and 8006 transitions. Word has length 91 [2021-11-22 15:07:26,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:07:26,872 INFO L470 AbstractCegarLoop]: Abstraction has 5444 states and 8006 transitions. [2021-11-22 15:07:26,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:07:26,877 INFO L276 IsEmpty]: Start isEmpty. Operand 5444 states and 8006 transitions. [2021-11-22 15:07:26,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-22 15:07:26,884 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:07:26,885 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:07:26,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 15:07:26,886 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:07:26,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:07:26,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1564953708, now seen corresponding path program 1 times [2021-11-22 15:07:26,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:07:26,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41622162] [2021-11-22 15:07:26,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:07:26,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:07:26,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:07:26,974 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 15:07:26,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:07:26,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41622162] [2021-11-22 15:07:26,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41622162] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:07:26,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:07:26,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:07:26,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306529278] [2021-11-22 15:07:26,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:07:26,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:07:26,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:07:26,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:07:26,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:07:26,978 INFO L87 Difference]: Start difference. First operand 5444 states and 8006 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:07:27,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:07:27,038 INFO L93 Difference]: Finished difference Result 5688 states and 8394 transitions. [2021-11-22 15:07:27,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:07:27,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-22 15:07:27,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:07:27,069 INFO L225 Difference]: With dead ends: 5688 [2021-11-22 15:07:27,069 INFO L226 Difference]: Without dead ends: 5560 [2021-11-22 15:07:27,072 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 15:07:27,073 INFO L933 BasicCegarLoop]: 1692 mSDtfsCounter, 1533 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 1802 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:07:27,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1533 Valid, 1802 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:07:27,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5560 states. [2021-11-22 15:07:27,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5560 to 5558. [2021-11-22 15:07:27,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5558 states, 5556 states have (on average 1.4735421166306695) internal successors, (8187), 5557 states have internal predecessors, (8187), 0 states have call successors, (0), 0 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 15:07:27,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5558 states to 5558 states and 8187 transitions. [2021-11-22 15:07:27,348 INFO L78 Accepts]: Start accepts. Automaton has 5558 states and 8187 transitions. Word has length 91 [2021-11-22 15:07:27,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:07:27,349 INFO L470 AbstractCegarLoop]: Abstraction has 5558 states and 8187 transitions. [2021-11-22 15:07:27,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:07:27,350 INFO L276 IsEmpty]: Start isEmpty. Operand 5558 states and 8187 transitions. [2021-11-22 15:07:27,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-22 15:07:27,351 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:07:27,351 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:07:27,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 15:07:27,352 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:07:27,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:07:27,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1479108296, now seen corresponding path program 1 times [2021-11-22 15:07:27,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:07:27,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993184281] [2021-11-22 15:07:27,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:07:27,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:07:27,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:07:27,432 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 15:07:27,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:07:27,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993184281] [2021-11-22 15:07:27,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993184281] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:07:27,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:07:27,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:07:27,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794810724] [2021-11-22 15:07:27,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:07:27,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:07:27,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:07:27,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:07:27,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:07:27,436 INFO L87 Difference]: Start difference. First operand 5558 states and 8187 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:07:27,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:07:27,495 INFO L93 Difference]: Finished difference Result 6018 states and 8917 transitions. [2021-11-22 15:07:27,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:07:27,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-22 15:07:27,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:07:27,525 INFO L225 Difference]: With dead ends: 6018 [2021-11-22 15:07:27,525 INFO L226 Difference]: Without dead ends: 5776 [2021-11-22 15:07:27,528 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 15:07:27,529 INFO L933 BasicCegarLoop]: 1687 mSDtfsCounter, 1529 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:07:27,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1529 Valid, 1801 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:07:27,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5776 states. [2021-11-22 15:07:27,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5776 to 5774. [2021-11-22 15:07:27,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5774 states, 5772 states have (on average 1.4773042273042274) internal successors, (8527), 5773 states have internal predecessors, (8527), 0 states have call successors, (0), 0 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 15:07:27,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5774 states to 5774 states and 8527 transitions. [2021-11-22 15:07:27,669 INFO L78 Accepts]: Start accepts. Automaton has 5774 states and 8527 transitions. Word has length 91 [2021-11-22 15:07:27,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:07:27,670 INFO L470 AbstractCegarLoop]: Abstraction has 5774 states and 8527 transitions. [2021-11-22 15:07:27,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:07:27,671 INFO L276 IsEmpty]: Start isEmpty. Operand 5774 states and 8527 transitions. [2021-11-22 15:07:27,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-22 15:07:27,672 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:07:27,672 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:07:27,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 15:07:27,673 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:07:27,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:07:27,673 INFO L85 PathProgramCache]: Analyzing trace with hash 733525566, now seen corresponding path program 1 times [2021-11-22 15:07:27,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:07:27,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821408818] [2021-11-22 15:07:27,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:07:27,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:07:27,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:07:27,721 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 15:07:27,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:07:27,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821408818] [2021-11-22 15:07:27,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821408818] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:07:27,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:07:27,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:07:27,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183691034] [2021-11-22 15:07:27,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:07:27,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:07:27,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:07:27,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:07:27,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:07:27,724 INFO L87 Difference]: Start difference. First operand 5774 states and 8527 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:07:27,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:07:27,790 INFO L93 Difference]: Finished difference Result 6642 states and 9897 transitions. [2021-11-22 15:07:27,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:07:27,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-22 15:07:27,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:07:27,804 INFO L225 Difference]: With dead ends: 6642 [2021-11-22 15:07:27,805 INFO L226 Difference]: Without dead ends: 6184 [2021-11-22 15:07:27,807 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 15:07:27,808 INFO L933 BasicCegarLoop]: 1682 mSDtfsCounter, 1525 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 1800 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:07:27,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1525 Valid, 1800 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:07:27,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6184 states. [2021-11-22 15:07:27,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6184 to 6182. [2021-11-22 15:07:27,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6182 states, 6180 states have (on average 1.4826860841423948) internal successors, (9163), 6181 states have internal predecessors, (9163), 0 states have call successors, (0), 0 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 15:07:27,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6182 states to 6182 states and 9163 transitions. [2021-11-22 15:07:27,961 INFO L78 Accepts]: Start accepts. Automaton has 6182 states and 9163 transitions. Word has length 91 [2021-11-22 15:07:27,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:07:27,962 INFO L470 AbstractCegarLoop]: Abstraction has 6182 states and 9163 transitions. [2021-11-22 15:07:27,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:07:27,963 INFO L276 IsEmpty]: Start isEmpty. Operand 6182 states and 9163 transitions. [2021-11-22 15:07:27,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-22 15:07:27,964 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:07:27,964 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:07:27,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-22 15:07:27,967 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:07:27,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:07:27,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1206505292, now seen corresponding path program 1 times [2021-11-22 15:07:27,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:07:27,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406732723] [2021-11-22 15:07:27,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:07:27,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:07:28,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:07:28,054 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 15:07:28,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:07:28,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406732723] [2021-11-22 15:07:28,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406732723] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:07:28,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:07:28,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:07:28,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755490913] [2021-11-22 15:07:28,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:07:28,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:07:28,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:07:28,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:07:28,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:07:28,058 INFO L87 Difference]: Start difference. First operand 6182 states and 9163 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:07:28,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:07:28,150 INFO L93 Difference]: Finished difference Result 7818 states and 11725 transitions. [2021-11-22 15:07:28,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:07:28,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-22 15:07:28,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:07:28,166 INFO L225 Difference]: With dead ends: 7818 [2021-11-22 15:07:28,166 INFO L226 Difference]: Without dead ends: 6952 [2021-11-22 15:07:28,171 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 15:07:28,174 INFO L933 BasicCegarLoop]: 1677 mSDtfsCounter, 1521 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 1799 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:07:28,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1521 Valid, 1799 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:07:28,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6952 states. [2021-11-22 15:07:28,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6952 to 6950. [2021-11-22 15:07:28,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6950 states, 6948 states have (on average 1.4892055267702937) internal successors, (10347), 6949 states have internal predecessors, (10347), 0 states have call successors, (0), 0 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 15:07:28,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6950 states to 6950 states and 10347 transitions. [2021-11-22 15:07:28,340 INFO L78 Accepts]: Start accepts. Automaton has 6950 states and 10347 transitions. Word has length 91 [2021-11-22 15:07:28,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:07:28,340 INFO L470 AbstractCegarLoop]: Abstraction has 6950 states and 10347 transitions. [2021-11-22 15:07:28,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:07:28,341 INFO L276 IsEmpty]: Start isEmpty. Operand 6950 states and 10347 transitions. [2021-11-22 15:07:28,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-22 15:07:28,342 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:07:28,342 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:07:28,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 15:07:28,343 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:07:28,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:07:28,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1494177322, now seen corresponding path program 1 times [2021-11-22 15:07:28,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:07:28,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723989735] [2021-11-22 15:07:28,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:07:28,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:07:28,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:07:28,440 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 15:07:28,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:07:28,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723989735] [2021-11-22 15:07:28,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723989735] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:07:28,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:07:28,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-22 15:07:28,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671255523] [2021-11-22 15:07:28,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:07:28,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 15:07:28,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:07:28,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 15:07:28,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:07:28,443 INFO L87 Difference]: Start difference. First operand 6950 states and 10347 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:07:29,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:07:29,594 INFO L93 Difference]: Finished difference Result 29826 states and 45977 transitions. [2021-11-22 15:07:29,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-22 15:07:29,594 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-22 15:07:29,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:07:29,660 INFO L225 Difference]: With dead ends: 29826 [2021-11-22 15:07:29,660 INFO L226 Difference]: Without dead ends: 28192 [2021-11-22 15:07:29,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2021-11-22 15:07:29,672 INFO L933 BasicCegarLoop]: 1597 mSDtfsCounter, 13389 mSDsluCounter, 1514 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13389 SdHoareTripleChecker+Valid, 3111 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:07:29,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13389 Valid, 3111 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:07:29,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28192 states. [2021-11-22 15:07:30,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28192 to 8582. [2021-11-22 15:07:30,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8582 states, 8580 states have (on average 1.494988344988345) internal successors, (12827), 8581 states have internal predecessors, (12827), 0 states have call successors, (0), 0 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 15:07:30,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8582 states to 8582 states and 12827 transitions. [2021-11-22 15:07:30,276 INFO L78 Accepts]: Start accepts. Automaton has 8582 states and 12827 transitions. Word has length 91 [2021-11-22 15:07:30,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:07:30,276 INFO L470 AbstractCegarLoop]: Abstraction has 8582 states and 12827 transitions. [2021-11-22 15:07:30,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:07:30,277 INFO L276 IsEmpty]: Start isEmpty. Operand 8582 states and 12827 transitions. [2021-11-22 15:07:30,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-22 15:07:30,278 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:07:30,278 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:07:30,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-22 15:07:30,278 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:07:30,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:07:30,279 INFO L85 PathProgramCache]: Analyzing trace with hash -30360326, now seen corresponding path program 1 times [2021-11-22 15:07:30,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:07:30,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414787586] [2021-11-22 15:07:30,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:07:30,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:07:30,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:07:30,322 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 15:07:30,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:07:30,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414787586] [2021-11-22 15:07:30,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414787586] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:07:30,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:07:30,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:07:30,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923840184] [2021-11-22 15:07:30,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:07:30,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:07:30,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:07:30,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:07:30,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:07:30,324 INFO L87 Difference]: Start difference. First operand 8582 states and 12827 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:07:30,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:07:30,610 INFO L93 Difference]: Finished difference Result 13404 states and 20239 transitions. [2021-11-22 15:07:30,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:07:30,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-22 15:07:30,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:07:30,631 INFO L225 Difference]: With dead ends: 13404 [2021-11-22 15:07:30,631 INFO L226 Difference]: Without dead ends: 10138 [2021-11-22 15:07:30,638 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 15:07:30,639 INFO L933 BasicCegarLoop]: 1632 mSDtfsCounter, 1505 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 1735 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:07:30,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1505 Valid, 1735 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:07:30,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10138 states. [2021-11-22 15:07:31,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10138 to 10136. [2021-11-22 15:07:31,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10136 states, 10134 states have (on average 1.4964476021314388) internal successors, (15165), 10135 states have internal predecessors, (15165), 0 states have call successors, (0), 0 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 15:07:31,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10136 states to 10136 states and 15165 transitions. [2021-11-22 15:07:31,100 INFO L78 Accepts]: Start accepts. Automaton has 10136 states and 15165 transitions. Word has length 93 [2021-11-22 15:07:31,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:07:31,100 INFO L470 AbstractCegarLoop]: Abstraction has 10136 states and 15165 transitions. [2021-11-22 15:07:31,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:07:31,102 INFO L276 IsEmpty]: Start isEmpty. Operand 10136 states and 15165 transitions. [2021-11-22 15:07:31,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-22 15:07:31,103 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:07:31,103 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:07:31,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-22 15:07:31,103 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:07:31,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:07:31,104 INFO L85 PathProgramCache]: Analyzing trace with hash 36133186, now seen corresponding path program 1 times [2021-11-22 15:07:31,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:07:31,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290189848] [2021-11-22 15:07:31,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:07:31,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:07:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:07:31,428 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 15:07:31,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:07:31,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290189848] [2021-11-22 15:07:31,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290189848] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:07:31,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:07:31,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-22 15:07:31,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463560810] [2021-11-22 15:07:31,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:07:31,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 15:07:31,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:07:31,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 15:07:31,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:07:31,431 INFO L87 Difference]: Start difference. First operand 10136 states and 15165 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:07:32,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:07:32,119 INFO L93 Difference]: Finished difference Result 14956 states and 22527 transitions. [2021-11-22 15:07:32,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 15:07:32,119 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-22 15:07:32,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:07:32,139 INFO L225 Difference]: With dead ends: 14956 [2021-11-22 15:07:32,139 INFO L226 Difference]: Without dead ends: 10138 [2021-11-22 15:07:32,147 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 15:07:32,148 INFO L933 BasicCegarLoop]: 1643 mSDtfsCounter, 6438 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6438 SdHoareTripleChecker+Valid, 2273 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:07:32,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6438 Valid, 2273 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:07:32,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10138 states. [2021-11-22 15:07:32,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10138 to 10136. [2021-11-22 15:07:32,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10136 states, 10134 states have (on average 1.4917110716400237) internal successors, (15117), 10135 states have internal predecessors, (15117), 0 states have call successors, (0), 0 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 15:07:32,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10136 states to 10136 states and 15117 transitions. [2021-11-22 15:07:32,572 INFO L78 Accepts]: Start accepts. Automaton has 10136 states and 15117 transitions. Word has length 93 [2021-11-22 15:07:32,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:07:32,573 INFO L470 AbstractCegarLoop]: Abstraction has 10136 states and 15117 transitions. [2021-11-22 15:07:32,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:07:32,573 INFO L276 IsEmpty]: Start isEmpty. Operand 10136 states and 15117 transitions. [2021-11-22 15:07:32,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-22 15:07:32,574 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:07:32,575 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:07:32,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-22 15:07:32,575 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:07:32,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:07:32,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1825047262, now seen corresponding path program 1 times [2021-11-22 15:07:32,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:07:32,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417005255] [2021-11-22 15:07:32,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:07:32,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:07:32,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:07:32,642 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 15:07:32,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:07:32,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417005255] [2021-11-22 15:07:32,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417005255] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:07:32,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:07:32,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:07:32,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851892423] [2021-11-22 15:07:32,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:07:32,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:07:32,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:07:32,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:07:32,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:07:32,645 INFO L87 Difference]: Start difference. First operand 10136 states and 15117 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:07:33,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:07:33,218 INFO L93 Difference]: Finished difference Result 19196 states and 28783 transitions. [2021-11-22 15:07:33,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:07:33,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-22 15:07:33,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:07:33,248 INFO L225 Difference]: With dead ends: 19196 [2021-11-22 15:07:33,248 INFO L226 Difference]: Without dead ends: 14378 [2021-11-22 15:07:33,257 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 15:07:33,258 INFO L933 BasicCegarLoop]: 1659 mSDtfsCounter, 1513 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:07:33,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1513 Valid, 1789 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:07:33,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14378 states. [2021-11-22 15:07:33,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14378 to 14376. [2021-11-22 15:07:33,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14376 states, 14374 states have (on average 1.48692082927508) internal successors, (21373), 14375 states have internal predecessors, (21373), 0 states have call successors, (0), 0 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 15:07:33,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14376 states to 14376 states and 21373 transitions. [2021-11-22 15:07:33,940 INFO L78 Accepts]: Start accepts. Automaton has 14376 states and 21373 transitions. Word has length 93 [2021-11-22 15:07:33,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:07:33,940 INFO L470 AbstractCegarLoop]: Abstraction has 14376 states and 21373 transitions. [2021-11-22 15:07:33,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:07:33,941 INFO L276 IsEmpty]: Start isEmpty. Operand 14376 states and 21373 transitions. [2021-11-22 15:07:33,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-22 15:07:33,942 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:07:33,942 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:07:33,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-22 15:07:33,942 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:07:33,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:07:33,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1222412418, now seen corresponding path program 1 times [2021-11-22 15:07:33,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:07:33,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34690975] [2021-11-22 15:07:33,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:07:33,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:07:33,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:07:33,994 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 15:07:33,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:07:33,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34690975] [2021-11-22 15:07:33,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34690975] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:07:33,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:07:33,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:07:33,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418649147] [2021-11-22 15:07:33,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:07:33,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:07:33,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:07:33,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:07:33,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:07:33,997 INFO L87 Difference]: Start difference. First operand 14376 states and 21373 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:07:34,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:07:34,941 INFO L93 Difference]: Finished difference Result 31340 states and 46591 transitions. [2021-11-22 15:07:34,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:07:34,942 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-22 15:07:34,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:07:34,979 INFO L225 Difference]: With dead ends: 31340 [2021-11-22 15:07:34,980 INFO L226 Difference]: Without dead ends: 22282 [2021-11-22 15:07:34,992 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 15:07:34,993 INFO L933 BasicCegarLoop]: 1672 mSDtfsCounter, 1517 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 1798 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:07:34,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1517 Valid, 1798 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:07:35,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22282 states. [2021-11-22 15:07:36,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22282 to 22280. [2021-11-22 15:07:36,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22280 states, 22278 states have (on average 1.473606248316725) internal successors, (32829), 22279 states have internal predecessors, (32829), 0 states have call successors, (0), 0 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 15:07:36,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22280 states to 22280 states and 32829 transitions. [2021-11-22 15:07:36,209 INFO L78 Accepts]: Start accepts. Automaton has 22280 states and 32829 transitions. Word has length 93 [2021-11-22 15:07:36,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:07:36,210 INFO L470 AbstractCegarLoop]: Abstraction has 22280 states and 32829 transitions. [2021-11-22 15:07:36,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:07:36,210 INFO L276 IsEmpty]: Start isEmpty. Operand 22280 states and 32829 transitions. [2021-11-22 15:07:36,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-22 15:07:36,211 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:07:36,212 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:07:36,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-22 15:07:36,212 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:07:36,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:07:36,213 INFO L85 PathProgramCache]: Analyzing trace with hash 705405902, now seen corresponding path program 1 times [2021-11-22 15:07:36,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:07:36,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344394724] [2021-11-22 15:07:36,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:07:36,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:07:36,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:07:36,279 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 15:07:36,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:07:36,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344394724] [2021-11-22 15:07:36,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344394724] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:07:36,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:07:36,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:07:36,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553949645] [2021-11-22 15:07:36,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:07:36,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:07:36,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:07:36,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:07:36,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:07:36,282 INFO L87 Difference]: Start difference. First operand 22280 states and 32829 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:07:37,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:07:37,537 INFO L93 Difference]: Finished difference Result 39242 states and 57854 transitions. [2021-11-22 15:07:37,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:07:37,538 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-22 15:07:37,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:07:37,561 INFO L225 Difference]: With dead ends: 39242 [2021-11-22 15:07:37,561 INFO L226 Difference]: Without dead ends: 22280 [2021-11-22 15:07:37,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:07:37,579 INFO L933 BasicCegarLoop]: 1560 mSDtfsCounter, 4912 mSDsluCounter, 1531 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4912 SdHoareTripleChecker+Valid, 3091 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:07:37,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4912 Valid, 3091 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:07:37,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22280 states. [2021-11-22 15:07:38,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22280 to 22280. [2021-11-22 15:07:38,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22280 states, 22278 states have (on average 1.4621150911212857) internal successors, (32573), 22279 states have internal predecessors, (32573), 0 states have call successors, (0), 0 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 15:07:38,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22280 states to 22280 states and 32573 transitions. [2021-11-22 15:07:38,720 INFO L78 Accepts]: Start accepts. Automaton has 22280 states and 32573 transitions. Word has length 94 [2021-11-22 15:07:38,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:07:38,721 INFO L470 AbstractCegarLoop]: Abstraction has 22280 states and 32573 transitions. [2021-11-22 15:07:38,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:07:38,721 INFO L276 IsEmpty]: Start isEmpty. Operand 22280 states and 32573 transitions. [2021-11-22 15:07:38,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-22 15:07:38,722 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:07:38,723 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:07:38,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-22 15:07:38,723 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:07:38,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:07:38,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1549411404, now seen corresponding path program 1 times [2021-11-22 15:07:38,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:07:38,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237794484] [2021-11-22 15:07:38,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:07:38,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:07:38,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:07:38,792 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 15:07:38,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:07:38,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237794484] [2021-11-22 15:07:38,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237794484] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:07:38,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:07:38,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:07:38,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380281107] [2021-11-22 15:07:38,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:07:38,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:07:38,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:07:38,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:07:38,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:07:38,795 INFO L87 Difference]: Start difference. First operand 22280 states and 32573 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:07:40,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:07:40,084 INFO L93 Difference]: Finished difference Result 39242 states and 57342 transitions. [2021-11-22 15:07:40,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:07:40,085 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-22 15:07:40,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:07:40,111 INFO L225 Difference]: With dead ends: 39242 [2021-11-22 15:07:40,111 INFO L226 Difference]: Without dead ends: 22280 [2021-11-22 15:07:40,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:07:40,130 INFO L933 BasicCegarLoop]: 1558 mSDtfsCounter, 4872 mSDsluCounter, 1532 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4872 SdHoareTripleChecker+Valid, 3090 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:07:40,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4872 Valid, 3090 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:07:40,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22280 states. [2021-11-22 15:07:41,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22280 to 22280. [2021-11-22 15:07:41,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22280 states, 22278 states have (on average 1.453496723224706) internal successors, (32381), 22279 states have internal predecessors, (32381), 0 states have call successors, (0), 0 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 15:07:41,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22280 states to 22280 states and 32381 transitions. [2021-11-22 15:07:41,261 INFO L78 Accepts]: Start accepts. Automaton has 22280 states and 32381 transitions. Word has length 94 [2021-11-22 15:07:41,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:07:41,262 INFO L470 AbstractCegarLoop]: Abstraction has 22280 states and 32381 transitions. [2021-11-22 15:07:41,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:07:41,262 INFO L276 IsEmpty]: Start isEmpty. Operand 22280 states and 32381 transitions. [2021-11-22 15:07:41,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-22 15:07:41,263 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:07:41,263 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:07:41,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-22 15:07:41,263 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:07:41,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:07:41,264 INFO L85 PathProgramCache]: Analyzing trace with hash 847811530, now seen corresponding path program 1 times [2021-11-22 15:07:41,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:07:41,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954747765] [2021-11-22 15:07:41,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:07:41,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:07:41,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:07:41,332 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 15:07:41,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:07:41,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954747765] [2021-11-22 15:07:41,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954747765] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:07:41,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:07:41,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:07:41,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206317561] [2021-11-22 15:07:41,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:07:41,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:07:41,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:07:41,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:07:41,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:07:41,335 INFO L87 Difference]: Start difference. First operand 22280 states and 32381 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:07:42,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:07:42,983 INFO L93 Difference]: Finished difference Result 36779 states and 53031 transitions. [2021-11-22 15:07:42,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 15:07:42,984 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-22 15:07:42,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:07:43,046 INFO L225 Difference]: With dead ends: 36779 [2021-11-22 15:07:43,047 INFO L226 Difference]: Without dead ends: 36777 [2021-11-22 15:07:43,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:07:43,061 INFO L933 BasicCegarLoop]: 1636 mSDtfsCounter, 289 mSDsluCounter, 4796 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 6432 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:07:43,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 6432 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:07:43,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36777 states. [2021-11-22 15:07:44,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36777 to 23048. [2021-11-22 15:07:44,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23048 states, 23046 states have (on average 1.4356070467760131) internal successors, (33085), 23047 states have internal predecessors, (33085), 0 states have call successors, (0), 0 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 15:07:44,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23048 states to 23048 states and 33085 transitions. [2021-11-22 15:07:44,453 INFO L78 Accepts]: Start accepts. Automaton has 23048 states and 33085 transitions. Word has length 94 [2021-11-22 15:07:44,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:07:44,453 INFO L470 AbstractCegarLoop]: Abstraction has 23048 states and 33085 transitions. [2021-11-22 15:07:44,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:07:44,453 INFO L276 IsEmpty]: Start isEmpty. Operand 23048 states and 33085 transitions. [2021-11-22 15:07:44,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-22 15:07:44,464 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:07:44,464 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:07:44,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-22 15:07:44,464 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:07:44,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:07:44,465 INFO L85 PathProgramCache]: Analyzing trace with hash 101873069, now seen corresponding path program 1 times [2021-11-22 15:07:44,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:07:44,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063631885] [2021-11-22 15:07:44,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:07:44,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:07:44,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:07:44,582 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-22 15:07:44,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:07:44,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063631885] [2021-11-22 15:07:44,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063631885] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:07:44,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:07:44,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-22 15:07:44,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269682017] [2021-11-22 15:07:44,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:07:44,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 15:07:44,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:07:44,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 15:07:44,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:07:44,585 INFO L87 Difference]: Start difference. First operand 23048 states and 33085 transitions. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:07:52,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:07:52,483 INFO L93 Difference]: Finished difference Result 150616 states and 214821 transitions. [2021-11-22 15:07:52,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 15:07:52,484 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-22 15:07:52,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:07:52,702 INFO L225 Difference]: With dead ends: 150616 [2021-11-22 15:07:52,702 INFO L226 Difference]: Without dead ends: 132886 [2021-11-22 15:07:52,739 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 15:07:52,740 INFO L933 BasicCegarLoop]: 1697 mSDtfsCounter, 10769 mSDsluCounter, 2373 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10769 SdHoareTripleChecker+Valid, 4070 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:07:52,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10769 Valid, 4070 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:07:52,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132886 states. [2021-11-22 15:07:56,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132886 to 40776. [2021-11-22 15:07:56,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40776 states, 40774 states have (on average 1.426718006572816) internal successors, (58173), 40775 states have internal predecessors, (58173), 0 states have call successors, (0), 0 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 15:07:56,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40776 states to 40776 states and 58173 transitions. [2021-11-22 15:07:56,130 INFO L78 Accepts]: Start accepts. Automaton has 40776 states and 58173 transitions. Word has length 130 [2021-11-22 15:07:56,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:07:56,130 INFO L470 AbstractCegarLoop]: Abstraction has 40776 states and 58173 transitions. [2021-11-22 15:07:56,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:07:56,131 INFO L276 IsEmpty]: Start isEmpty. Operand 40776 states and 58173 transitions. [2021-11-22 15:07:56,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-22 15:07:56,149 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:07:56,150 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:07:56,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-22 15:07:56,150 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:07:56,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:07:56,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1349380685, now seen corresponding path program 1 times [2021-11-22 15:07:56,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:07:56,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135857727] [2021-11-22 15:07:56,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:07:56,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:07:56,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:07:56,271 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-22 15:07:56,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:07:56,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135857727] [2021-11-22 15:07:56,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135857727] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:07:56,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:07:56,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-22 15:07:56,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644920897] [2021-11-22 15:07:56,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:07:56,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 15:07:56,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:07:56,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 15:07:56,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:07:56,275 INFO L87 Difference]: Start difference. First operand 40776 states and 58173 transitions. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:08:06,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:08:06,183 INFO L93 Difference]: Finished difference Result 168344 states and 239909 transitions. [2021-11-22 15:08:06,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 15:08:06,184 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-22 15:08:06,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:08:06,420 INFO L225 Difference]: With dead ends: 168344 [2021-11-22 15:08:06,420 INFO L226 Difference]: Without dead ends: 150614 [2021-11-22 15:08:06,454 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 15:08:06,455 INFO L933 BasicCegarLoop]: 1697 mSDtfsCounter, 10520 mSDsluCounter, 2444 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10520 SdHoareTripleChecker+Valid, 4141 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:08:06,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10520 Valid, 4141 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:08:06,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150614 states. [2021-11-22 15:08:12,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150614 to 67400. [2021-11-22 15:08:12,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67400 states, 67398 states have (on average 1.419107391910739) internal successors, (95645), 67399 states have internal predecessors, (95645), 0 states have call successors, (0), 0 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 15:08:12,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67400 states to 67400 states and 95645 transitions. [2021-11-22 15:08:12,145 INFO L78 Accepts]: Start accepts. Automaton has 67400 states and 95645 transitions. Word has length 130 [2021-11-22 15:08:12,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:08:12,145 INFO L470 AbstractCegarLoop]: Abstraction has 67400 states and 95645 transitions. [2021-11-22 15:08:12,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:08:12,145 INFO L276 IsEmpty]: Start isEmpty. Operand 67400 states and 95645 transitions. [2021-11-22 15:08:12,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-22 15:08:12,164 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:08:12,165 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:08:12,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-22 15:08:12,165 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:08:12,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:08:12,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1476153629, now seen corresponding path program 1 times [2021-11-22 15:08:12,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:08:12,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839036755] [2021-11-22 15:08:12,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:08:12,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:08:12,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:08:12,274 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-22 15:08:12,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:08:12,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839036755] [2021-11-22 15:08:12,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839036755] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:08:12,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:08:12,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-22 15:08:12,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074913934] [2021-11-22 15:08:12,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:08:12,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 15:08:12,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:08:12,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 15:08:12,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:08:12,277 INFO L87 Difference]: Start difference. First operand 67400 states and 95645 transitions. Second operand has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)