./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_131c69bd-6248-40ad-8903-471afe5fe252/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_131c69bd-6248-40ad-8903-471afe5fe252/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_131c69bd-6248-40ad-8903-471afe5fe252/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_131c69bd-6248-40ad-8903-471afe5fe252/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_131c69bd-6248-40ad-8903-471afe5fe252/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_131c69bd-6248-40ad-8903-471afe5fe252/bin/uautomizer-uyxdKDjOR8 --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 163b1e4f0aac9bc589d5c69fa383b82ca836f7f4fc72d1577e6f9bf24923b682 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 17:14:19,732 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 17:14:19,735 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 17:14:19,749 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 17:14:19,749 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 17:14:19,750 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 17:14:19,751 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 17:14:19,753 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 17:14:19,754 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 17:14:19,754 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 17:14:19,755 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 17:14:19,756 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 17:14:19,756 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 17:14:19,757 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 17:14:19,758 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 17:14:19,759 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 17:14:19,759 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 17:14:19,760 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 17:14:19,761 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 17:14:19,762 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 17:14:19,763 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 17:14:19,765 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 17:14:19,765 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 17:14:19,766 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 17:14:19,768 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 17:14:19,769 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 17:14:19,769 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 17:14:19,770 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 17:14:19,770 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 17:14:19,771 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 17:14:19,771 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 17:14:19,772 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 17:14:19,772 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 17:14:19,773 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 17:14:19,773 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 17:14:19,774 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 17:14:19,774 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 17:14:19,775 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 17:14:19,775 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 17:14:19,775 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 17:14:19,776 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 17:14:19,777 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_131c69bd-6248-40ad-8903-471afe5fe252/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 17:14:19,792 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 17:14:19,792 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 17:14:19,792 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 17:14:19,792 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 17:14:19,793 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 17:14:19,793 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 17:14:19,794 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 17:14:19,794 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 17:14:19,794 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 17:14:19,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 17:14:19,794 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 17:14:19,794 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 17:14:19,795 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 17:14:19,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 17:14:19,795 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 17:14:19,795 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 17:14:19,795 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 17:14:19,795 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 17:14:19,796 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 17:14:19,796 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 17:14:19,796 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 17:14:19,796 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 17:14:19,796 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 17:14:19,796 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 17:14:19,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:14:19,797 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 17:14:19,797 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 17:14:19,797 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 17:14:19,797 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 17:14:19,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 17:14:19,798 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 17:14:19,798 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 17:14:19,798 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 17:14:19,798 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 17:14:19,798 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 17:14:19,798 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_131c69bd-6248-40ad-8903-471afe5fe252/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_131c69bd-6248-40ad-8903-471afe5fe252/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 163b1e4f0aac9bc589d5c69fa383b82ca836f7f4fc72d1577e6f9bf24923b682 [2022-12-13 17:14:19,971 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 17:14:19,990 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 17:14:19,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 17:14:19,994 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 17:14:19,994 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 17:14:19,995 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_131c69bd-6248-40ad-8903-471afe5fe252/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c [2022-12-13 17:14:22,526 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 17:14:22,830 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 17:14:22,830 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_131c69bd-6248-40ad-8903-471afe5fe252/sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c [2022-12-13 17:14:22,852 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_131c69bd-6248-40ad-8903-471afe5fe252/bin/uautomizer-uyxdKDjOR8/data/5c3ea1ac5/fd0affb2be3140ef938e772377f276f6/FLAG08c242853 [2022-12-13 17:14:23,081 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_131c69bd-6248-40ad-8903-471afe5fe252/bin/uautomizer-uyxdKDjOR8/data/5c3ea1ac5/fd0affb2be3140ef938e772377f276f6 [2022-12-13 17:14:23,083 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 17:14:23,084 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 17:14:23,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 17:14:23,085 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 17:14:23,087 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 17:14:23,088 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:14:23" (1/1) ... [2022-12-13 17:14:23,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f96e1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:14:23, skipping insertion in model container [2022-12-13 17:14:23,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:14:23" (1/1) ... [2022-12-13 17:14:23,094 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 17:14:23,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 17:14:23,387 WARN L237 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_131c69bd-6248-40ad-8903-471afe5fe252/sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c[11742,11755] [2022-12-13 17:14:23,430 WARN L237 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_131c69bd-6248-40ad-8903-471afe5fe252/sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c[19490,19503] [2022-12-13 17:14:23,941 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:14:23,951 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 17:14:23,981 WARN L237 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_131c69bd-6248-40ad-8903-471afe5fe252/sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c[11742,11755] [2022-12-13 17:14:23,989 WARN L237 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_131c69bd-6248-40ad-8903-471afe5fe252/sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c[19490,19503] [2022-12-13 17:14:24,335 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:14:24,351 INFO L208 MainTranslator]: Completed translation [2022-12-13 17:14:24,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:14:24 WrapperNode [2022-12-13 17:14:24,352 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 17:14:24,353 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 17:14:24,353 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 17:14:24,353 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 17:14:24,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:14:24" (1/1) ... [2022-12-13 17:14:24,399 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:14:24" (1/1) ... [2022-12-13 17:14:24,605 INFO L138 Inliner]: procedures = 37, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5066 [2022-12-13 17:14:24,606 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 17:14:24,607 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 17:14:24,607 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 17:14:24,607 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 17:14:24,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:14:24" (1/1) ... [2022-12-13 17:14:24,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:14:24" (1/1) ... [2022-12-13 17:14:24,656 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:14:24" (1/1) ... [2022-12-13 17:14:24,656 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:14:24" (1/1) ... [2022-12-13 17:14:24,754 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:14:24" (1/1) ... [2022-12-13 17:14:24,769 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:14:24" (1/1) ... [2022-12-13 17:14:24,798 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:14:24" (1/1) ... [2022-12-13 17:14:24,806 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:14:24" (1/1) ... [2022-12-13 17:14:24,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 17:14:24,898 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 17:14:24,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 17:14:24,898 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 17:14:24,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:14:24" (1/1) ... [2022-12-13 17:14:24,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:14:24,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_131c69bd-6248-40ad-8903-471afe5fe252/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:14:24,922 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_131c69bd-6248-40ad-8903-471afe5fe252/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 17:14:24,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_131c69bd-6248-40ad-8903-471afe5fe252/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 17:14:24,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 17:14:24,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 17:14:24,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 17:14:24,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 17:14:25,046 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 17:14:25,048 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 17:14:28,325 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 17:14:28,340 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 17:14:28,341 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 17:14:28,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:14:28 BoogieIcfgContainer [2022-12-13 17:14:28,344 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 17:14:28,347 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 17:14:28,347 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 17:14:28,350 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 17:14:28,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 05:14:23" (1/3) ... [2022-12-13 17:14:28,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d1d9c81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:14:28, skipping insertion in model container [2022-12-13 17:14:28,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:14:24" (2/3) ... [2022-12-13 17:14:28,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d1d9c81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:14:28, skipping insertion in model container [2022-12-13 17:14:28,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:14:28" (3/3) ... [2022-12-13 17:14:28,352 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c [2022-12-13 17:14:28,371 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 17:14:28,371 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 17:14:28,422 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:14:28,427 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4691bc03, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:14:28,427 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 17:14:28,434 INFO L276 IsEmpty]: Start isEmpty. Operand has 899 states, 896 states have (on average 1.9051339285714286) internal successors, (1707), 898 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:28,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-13 17:14:28,440 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:14:28,441 INFO L195 NwaCegarLoop]: 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] [2022-12-13 17:14:28,441 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:14:28,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:28,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1798739915, now seen corresponding path program 1 times [2022-12-13 17:14:28,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:28,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225457913] [2022-12-13 17:14:28,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:28,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:28,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:28,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:14:28,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:28,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225457913] [2022-12-13 17:14:28,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225457913] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:14:28,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:14:28,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:14:28,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628725190] [2022-12-13 17:14:28,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:14:28,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 17:14:28,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:14:28,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 17:14:28,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 17:14:28,669 INFO L87 Difference]: Start difference. First operand has 899 states, 896 states have (on average 1.9051339285714286) internal successors, (1707), 898 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:28,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:14:28,716 INFO L93 Difference]: Finished difference Result 1759 states and 3342 transitions. [2022-12-13 17:14:28,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 17:14:28,718 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-12-13 17:14:28,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:14:28,733 INFO L225 Difference]: With dead ends: 1759 [2022-12-13 17:14:28,733 INFO L226 Difference]: Without dead ends: 833 [2022-12-13 17:14:28,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 17:14:28,742 INFO L413 NwaCegarLoop]: 1638 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1638 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:14:28,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1638 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:14:28,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2022-12-13 17:14:28,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 833. [2022-12-13 17:14:28,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 831 states have (on average 1.8941034897713598) internal successors, (1574), 832 states have internal predecessors, (1574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:28,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1574 transitions. [2022-12-13 17:14:28,813 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1574 transitions. Word has length 24 [2022-12-13 17:14:28,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:14:28,814 INFO L495 AbstractCegarLoop]: Abstraction has 833 states and 1574 transitions. [2022-12-13 17:14:28,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:28,814 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1574 transitions. [2022-12-13 17:14:28,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-13 17:14:28,815 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:14:28,815 INFO L195 NwaCegarLoop]: 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] [2022-12-13 17:14:28,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 17:14:28,816 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:14:28,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:28,817 INFO L85 PathProgramCache]: Analyzing trace with hash 502082675, now seen corresponding path program 1 times [2022-12-13 17:14:28,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:28,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971605039] [2022-12-13 17:14:28,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:28,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:28,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:28,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:14:28,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:28,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971605039] [2022-12-13 17:14:28,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971605039] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:14:28,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:14:28,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 17:14:28,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649047107] [2022-12-13 17:14:28,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:14:28,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 17:14:28,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:14:28,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 17:14:28,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:14:28,996 INFO L87 Difference]: Start difference. First operand 833 states and 1574 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:29,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:14:29,112 INFO L93 Difference]: Finished difference Result 879 states and 1645 transitions. [2022-12-13 17:14:29,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 17:14:29,113 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-12-13 17:14:29,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:14:29,117 INFO L225 Difference]: With dead ends: 879 [2022-12-13 17:14:29,117 INFO L226 Difference]: Without dead ends: 833 [2022-12-13 17:14:29,117 INFO L412 NwaCegarLoop]: 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 [2022-12-13 17:14:29,118 INFO L413 NwaCegarLoop]: 1572 mSDtfsCounter, 3 mSDsluCounter, 4682 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6254 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:14:29,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6254 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:14:29,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2022-12-13 17:14:29,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 833. [2022-12-13 17:14:29,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 831 states have (on average 1.8567990373044525) internal successors, (1543), 832 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:29,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1543 transitions. [2022-12-13 17:14:29,143 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1543 transitions. Word has length 24 [2022-12-13 17:14:29,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:14:29,144 INFO L495 AbstractCegarLoop]: Abstraction has 833 states and 1543 transitions. [2022-12-13 17:14:29,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:29,144 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1543 transitions. [2022-12-13 17:14:29,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-12-13 17:14:29,145 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:14:29,146 INFO L195 NwaCegarLoop]: 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] [2022-12-13 17:14:29,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 17:14:29,146 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:14:29,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:29,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1518044022, now seen corresponding path program 1 times [2022-12-13 17:14:29,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:29,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968829152] [2022-12-13 17:14:29,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:29,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:29,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:29,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:14:29,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:29,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968829152] [2022-12-13 17:14:29,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968829152] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:14:29,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:14:29,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 17:14:29,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805294315] [2022-12-13 17:14:29,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:14:29,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:14:29,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:14:29,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:14:29,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:14:29,330 INFO L87 Difference]: Start difference. First operand 833 states and 1543 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:29,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:14:29,566 INFO L93 Difference]: Finished difference Result 1253 states and 2213 transitions. [2022-12-13 17:14:29,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 17:14:29,567 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-12-13 17:14:29,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:14:29,570 INFO L225 Difference]: With dead ends: 1253 [2022-12-13 17:14:29,570 INFO L226 Difference]: Without dead ends: 1211 [2022-12-13 17:14:29,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-12-13 17:14:29,572 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 7953 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7953 SdHoareTripleChecker+Valid, 2746 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:14:29,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7953 Valid, 2746 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:14:29,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2022-12-13 17:14:29,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 873. [2022-12-13 17:14:29,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 871 states have (on average 1.8450057405281286) internal successors, (1607), 872 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:29,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1607 transitions. [2022-12-13 17:14:29,590 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1607 transitions. Word has length 54 [2022-12-13 17:14:29,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:14:29,590 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1607 transitions. [2022-12-13 17:14:29,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:29,591 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1607 transitions. [2022-12-13 17:14:29,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-13 17:14:29,592 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:14:29,592 INFO L195 NwaCegarLoop]: 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] [2022-12-13 17:14:29,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 17:14:29,592 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:14:29,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:29,593 INFO L85 PathProgramCache]: Analyzing trace with hash 32878714, now seen corresponding path program 1 times [2022-12-13 17:14:29,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:29,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49244557] [2022-12-13 17:14:29,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:29,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:29,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:29,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:14:29,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:29,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49244557] [2022-12-13 17:14:29,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49244557] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:14:29,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:14:29,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:14:29,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279890794] [2022-12-13 17:14:29,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:14:29,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:14:29,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:14:29,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:14:29,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:14:29,656 INFO L87 Difference]: Start difference. First operand 873 states and 1607 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:29,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:14:29,695 INFO L93 Difference]: Finished difference Result 1026 states and 1850 transitions. [2022-12-13 17:14:29,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:14:29,696 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-12-13 17:14:29,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:14:29,700 INFO L225 Difference]: With dead ends: 1026 [2022-12-13 17:14:29,700 INFO L226 Difference]: Without dead ends: 944 [2022-12-13 17:14:29,701 INFO L412 NwaCegarLoop]: 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 [2022-12-13 17:14:29,702 INFO L413 NwaCegarLoop]: 1541 mSDtfsCounter, 1482 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1603 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 [2022-12-13 17:14:29,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1603 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:14:29,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2022-12-13 17:14:29,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 942. [2022-12-13 17:14:29,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 940 states have (on average 1.824468085106383) internal successors, (1715), 941 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:29,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1715 transitions. [2022-12-13 17:14:29,724 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1715 transitions. Word has length 56 [2022-12-13 17:14:29,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:14:29,724 INFO L495 AbstractCegarLoop]: Abstraction has 942 states and 1715 transitions. [2022-12-13 17:14:29,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:29,724 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1715 transitions. [2022-12-13 17:14:29,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-13 17:14:29,726 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:14:29,727 INFO L195 NwaCegarLoop]: 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] [2022-12-13 17:14:29,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 17:14:29,727 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:14:29,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:29,728 INFO L85 PathProgramCache]: Analyzing trace with hash 99372226, now seen corresponding path program 1 times [2022-12-13 17:14:29,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:29,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273604338] [2022-12-13 17:14:29,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:29,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:29,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:29,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:14:29,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:29,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273604338] [2022-12-13 17:14:29,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273604338] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:14:29,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:14:29,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 17:14:29,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016738095] [2022-12-13 17:14:29,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:14:29,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:14:29,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:14:29,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:14:29,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:14:29,962 INFO L87 Difference]: Start difference. First operand 942 states and 1715 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:30,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:14:30,105 INFO L93 Difference]: Finished difference Result 1095 states and 1955 transitions. [2022-12-13 17:14:30,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:14:30,106 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-12-13 17:14:30,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:14:30,108 INFO L225 Difference]: With dead ends: 1095 [2022-12-13 17:14:30,108 INFO L226 Difference]: Without dead ends: 944 [2022-12-13 17:14:30,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-12-13 17:14:30,110 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 1509 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1509 SdHoareTripleChecker+Valid, 1856 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:14:30,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1509 Valid, 1856 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:14:30,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2022-12-13 17:14:30,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 942. [2022-12-13 17:14:30,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 940 states have (on average 1.8223404255319149) internal successors, (1713), 941 states have internal predecessors, (1713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:30,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1713 transitions. [2022-12-13 17:14:30,153 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1713 transitions. Word has length 56 [2022-12-13 17:14:30,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:14:30,153 INFO L495 AbstractCegarLoop]: Abstraction has 942 states and 1713 transitions. [2022-12-13 17:14:30,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:30,154 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1713 transitions. [2022-12-13 17:14:30,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-12-13 17:14:30,155 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:14:30,156 INFO L195 NwaCegarLoop]: 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] [2022-12-13 17:14:30,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 17:14:30,156 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:14:30,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:30,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1629151369, now seen corresponding path program 1 times [2022-12-13 17:14:30,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:30,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208070359] [2022-12-13 17:14:30,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:30,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:30,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:30,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:14:30,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:30,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208070359] [2022-12-13 17:14:30,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208070359] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:14:30,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:14:30,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 17:14:30,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923501807] [2022-12-13 17:14:30,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:14:30,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 17:14:30,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:14:30,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 17:14:30,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:14:30,379 INFO L87 Difference]: Start difference. First operand 942 states and 1713 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:30,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:14:30,524 INFO L93 Difference]: Finished difference Result 1090 states and 1940 transitions. [2022-12-13 17:14:30,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 17:14:30,525 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2022-12-13 17:14:30,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:14:30,528 INFO L225 Difference]: With dead ends: 1090 [2022-12-13 17:14:30,529 INFO L226 Difference]: Without dead ends: 1088 [2022-12-13 17:14:30,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-12-13 17:14:30,530 INFO L413 NwaCegarLoop]: 1598 mSDtfsCounter, 394 mSDsluCounter, 9035 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 10633 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:14:30,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 10633 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:14:30,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2022-12-13 17:14:30,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 948. [2022-12-13 17:14:30,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 946 states have (on average 1.8160676532769555) internal successors, (1718), 947 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:30,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1718 transitions. [2022-12-13 17:14:30,553 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1718 transitions. Word has length 57 [2022-12-13 17:14:30,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:14:30,553 INFO L495 AbstractCegarLoop]: Abstraction has 948 states and 1718 transitions. [2022-12-13 17:14:30,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:30,553 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1718 transitions. [2022-12-13 17:14:30,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-13 17:14:30,554 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:14:30,554 INFO L195 NwaCegarLoop]: 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] [2022-12-13 17:14:30,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 17:14:30,554 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:14:30,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:30,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1409361730, now seen corresponding path program 1 times [2022-12-13 17:14:30,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:30,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567127577] [2022-12-13 17:14:30,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:30,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:30,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:30,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:14:30,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:30,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567127577] [2022-12-13 17:14:30,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567127577] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:14:30,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:14:30,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:14:30,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099211176] [2022-12-13 17:14:30,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:14:30,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:14:30,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:14:30,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:14:30,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:14:30,596 INFO L87 Difference]: Start difference. First operand 948 states and 1718 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:30,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:14:30,626 INFO L93 Difference]: Finished difference Result 1118 states and 1979 transitions. [2022-12-13 17:14:30,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:14:30,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-12-13 17:14:30,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:14:30,630 INFO L225 Difference]: With dead ends: 1118 [2022-12-13 17:14:30,630 INFO L226 Difference]: Without dead ends: 1030 [2022-12-13 17:14:30,630 INFO L412 NwaCegarLoop]: 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 [2022-12-13 17:14:30,631 INFO L413 NwaCegarLoop]: 1595 mSDtfsCounter, 1496 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1663 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:14:30,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1663 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:14:30,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2022-12-13 17:14:30,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 1028. [2022-12-13 17:14:30,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 1026 states have (on average 1.7923976608187135) internal successors, (1839), 1027 states have internal predecessors, (1839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:30,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1839 transitions. [2022-12-13 17:14:30,674 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1839 transitions. Word has length 58 [2022-12-13 17:14:30,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:14:30,674 INFO L495 AbstractCegarLoop]: Abstraction has 1028 states and 1839 transitions. [2022-12-13 17:14:30,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:30,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1839 transitions. [2022-12-13 17:14:30,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-13 17:14:30,675 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:14:30,675 INFO L195 NwaCegarLoop]: 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] [2022-12-13 17:14:30,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 17:14:30,675 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:14:30,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:30,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1383487166, now seen corresponding path program 1 times [2022-12-13 17:14:30,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:30,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338404337] [2022-12-13 17:14:30,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:30,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:30,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:30,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:14:30,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:30,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338404337] [2022-12-13 17:14:30,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338404337] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:14:30,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:14:30,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:14:30,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890131192] [2022-12-13 17:14:30,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:14:30,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:14:30,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:14:30,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:14:30,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:14:30,721 INFO L87 Difference]: Start difference. First operand 1028 states and 1839 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:30,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:14:30,766 INFO L93 Difference]: Finished difference Result 1474 states and 2519 transitions. [2022-12-13 17:14:30,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:14:30,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-12-13 17:14:30,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:14:30,770 INFO L225 Difference]: With dead ends: 1474 [2022-12-13 17:14:30,770 INFO L226 Difference]: Without dead ends: 1239 [2022-12-13 17:14:30,771 INFO L412 NwaCegarLoop]: 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 [2022-12-13 17:14:30,772 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 1492 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 1663 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:14:30,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1492 Valid, 1663 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:14:30,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2022-12-13 17:14:30,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1237. [2022-12-13 17:14:30,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1237 states, 1235 states have (on average 1.7417004048582996) internal successors, (2151), 1236 states have internal predecessors, (2151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:30,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 2151 transitions. [2022-12-13 17:14:30,814 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 2151 transitions. Word has length 58 [2022-12-13 17:14:30,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:14:30,814 INFO L495 AbstractCegarLoop]: Abstraction has 1237 states and 2151 transitions. [2022-12-13 17:14:30,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:30,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 2151 transitions. [2022-12-13 17:14:30,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-13 17:14:30,815 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:14:30,815 INFO L195 NwaCegarLoop]: 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] [2022-12-13 17:14:30,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 17:14:30,816 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:14:30,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:30,816 INFO L85 PathProgramCache]: Analyzing trace with hash 696011330, now seen corresponding path program 1 times [2022-12-13 17:14:30,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:30,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238344763] [2022-12-13 17:14:30,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:30,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:30,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:30,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:14:30,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:30,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238344763] [2022-12-13 17:14:30,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238344763] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:14:30,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:14:30,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:14:30,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837839411] [2022-12-13 17:14:30,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:14:30,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:14:30,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:14:30,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:14:30,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:14:30,852 INFO L87 Difference]: Start difference. First operand 1237 states and 2151 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:30,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:14:30,920 INFO L93 Difference]: Finished difference Result 2077 states and 3413 transitions. [2022-12-13 17:14:30,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:14:30,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-12-13 17:14:30,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:14:30,925 INFO L225 Difference]: With dead ends: 2077 [2022-12-13 17:14:30,925 INFO L226 Difference]: Without dead ends: 1633 [2022-12-13 17:14:30,926 INFO L412 NwaCegarLoop]: 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 [2022-12-13 17:14:30,926 INFO L413 NwaCegarLoop]: 1585 mSDtfsCounter, 1490 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1665 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:14:30,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1665 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:14:30,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2022-12-13 17:14:30,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1631. [2022-12-13 17:14:30,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1629 states have (on average 1.6740331491712708) internal successors, (2727), 1630 states have internal predecessors, (2727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:30,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 2727 transitions. [2022-12-13 17:14:30,995 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 2727 transitions. Word has length 58 [2022-12-13 17:14:30,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:14:30,995 INFO L495 AbstractCegarLoop]: Abstraction has 1631 states and 2727 transitions. [2022-12-13 17:14:30,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:30,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 2727 transitions. [2022-12-13 17:14:31,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-13 17:14:31,007 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:14:31,007 INFO L195 NwaCegarLoop]: 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] [2022-12-13 17:14:31,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 17:14:31,007 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:14:31,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:31,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1818023102, now seen corresponding path program 1 times [2022-12-13 17:14:31,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:31,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494307035] [2022-12-13 17:14:31,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:31,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:31,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:31,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:14:31,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:31,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494307035] [2022-12-13 17:14:31,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494307035] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:14:31,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:14:31,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:14:31,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519285998] [2022-12-13 17:14:31,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:14:31,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:14:31,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:14:31,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:14:31,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:14:31,039 INFO L87 Difference]: Start difference. First operand 1631 states and 2727 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:31,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:14:31,159 INFO L93 Difference]: Finished difference Result 3211 states and 5057 transitions. [2022-12-13 17:14:31,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:14:31,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-12-13 17:14:31,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:14:31,164 INFO L225 Difference]: With dead ends: 3211 [2022-12-13 17:14:31,165 INFO L226 Difference]: Without dead ends: 2373 [2022-12-13 17:14:31,166 INFO L412 NwaCegarLoop]: 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 [2022-12-13 17:14:31,167 INFO L413 NwaCegarLoop]: 1583 mSDtfsCounter, 1488 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1667 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:14:31,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1667 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:14:31,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2373 states. [2022-12-13 17:14:31,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2373 to 2371. [2022-12-13 17:14:31,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2371 states, 2369 states have (on average 1.5968763191219923) internal successors, (3783), 2370 states have internal predecessors, (3783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:31,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2371 states to 2371 states and 3783 transitions. [2022-12-13 17:14:31,292 INFO L78 Accepts]: Start accepts. Automaton has 2371 states and 3783 transitions. Word has length 58 [2022-12-13 17:14:31,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:14:31,292 INFO L495 AbstractCegarLoop]: Abstraction has 2371 states and 3783 transitions. [2022-12-13 17:14:31,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:31,293 INFO L276 IsEmpty]: Start isEmpty. Operand 2371 states and 3783 transitions. [2022-12-13 17:14:31,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-13 17:14:31,293 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:14:31,293 INFO L195 NwaCegarLoop]: 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] [2022-12-13 17:14:31,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 17:14:31,293 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:14:31,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:31,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1673218114, now seen corresponding path program 1 times [2022-12-13 17:14:31,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:31,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320900089] [2022-12-13 17:14:31,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:31,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:31,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:31,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:14:31,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:31,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320900089] [2022-12-13 17:14:31,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320900089] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:14:31,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:14:31,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:14:31,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178961162] [2022-12-13 17:14:31,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:14:31,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:14:31,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:14:31,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:14:31,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:14:31,359 INFO L87 Difference]: Start difference. First operand 2371 states and 3783 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:31,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:14:31,574 INFO L93 Difference]: Finished difference Result 5335 states and 8057 transitions. [2022-12-13 17:14:31,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:14:31,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-12-13 17:14:31,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:14:31,582 INFO L225 Difference]: With dead ends: 5335 [2022-12-13 17:14:31,583 INFO L226 Difference]: Without dead ends: 3757 [2022-12-13 17:14:31,585 INFO L412 NwaCegarLoop]: 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 [2022-12-13 17:14:31,586 INFO L413 NwaCegarLoop]: 1597 mSDtfsCounter, 1494 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:14:31,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1669 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:14:31,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3757 states. [2022-12-13 17:14:31,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3757 to 3755. [2022-12-13 17:14:31,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3755 states, 3753 states have (on average 1.5195843325339728) internal successors, (5703), 3754 states have internal predecessors, (5703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:31,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3755 states to 3755 states and 5703 transitions. [2022-12-13 17:14:31,912 INFO L78 Accepts]: Start accepts. Automaton has 3755 states and 5703 transitions. Word has length 58 [2022-12-13 17:14:31,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:14:31,913 INFO L495 AbstractCegarLoop]: Abstraction has 3755 states and 5703 transitions. [2022-12-13 17:14:31,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:31,913 INFO L276 IsEmpty]: Start isEmpty. Operand 3755 states and 5703 transitions. [2022-12-13 17:14:31,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-12-13 17:14:31,914 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:14:31,914 INFO L195 NwaCegarLoop]: 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] [2022-12-13 17:14:31,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 17:14:31,914 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:14:31,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:31,915 INFO L85 PathProgramCache]: Analyzing trace with hash 701701722, now seen corresponding path program 1 times [2022-12-13 17:14:31,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:31,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410445191] [2022-12-13 17:14:31,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:31,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:31,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:32,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:14:32,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:32,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410445191] [2022-12-13 17:14:32,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410445191] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:14:32,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:14:32,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:14:32,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281450303] [2022-12-13 17:14:32,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:14:32,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:14:32,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:14:32,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:14:32,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 17:14:32,012 INFO L87 Difference]: Start difference. First operand 3755 states and 5703 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:38,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:14:38,171 INFO L93 Difference]: Finished difference Result 6010 states and 10012 transitions. [2022-12-13 17:14:38,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:14:38,172 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-12-13 17:14:38,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:14:38,187 INFO L225 Difference]: With dead ends: 6010 [2022-12-13 17:14:38,187 INFO L226 Difference]: Without dead ends: 5257 [2022-12-13 17:14:38,188 INFO L412 NwaCegarLoop]: 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 [2022-12-13 17:14:38,188 INFO L413 NwaCegarLoop]: 779 mSDtfsCounter, 2387 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2387 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 6507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-12-13 17:14:38,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2387 Valid, 797 Invalid, 6507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-12-13 17:14:38,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5257 states. [2022-12-13 17:14:38,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5257 to 5257. [2022-12-13 17:14:38,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5257 states, 5255 states have (on average 1.487535680304472) internal successors, (7817), 5256 states have internal predecessors, (7817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:38,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5257 states to 5257 states and 7817 transitions. [2022-12-13 17:14:38,515 INFO L78 Accepts]: Start accepts. Automaton has 5257 states and 7817 transitions. Word has length 67 [2022-12-13 17:14:38,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:14:38,515 INFO L495 AbstractCegarLoop]: Abstraction has 5257 states and 7817 transitions. [2022-12-13 17:14:38,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:38,515 INFO L276 IsEmpty]: Start isEmpty. Operand 5257 states and 7817 transitions. [2022-12-13 17:14:38,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-13 17:14:38,517 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:14:38,517 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:14:38,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 17:14:38,517 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:14:38,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:38,518 INFO L85 PathProgramCache]: Analyzing trace with hash 273219202, now seen corresponding path program 1 times [2022-12-13 17:14:38,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:38,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014509838] [2022-12-13 17:14:38,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:38,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:38,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:38,625 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 17:14:38,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:38,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014509838] [2022-12-13 17:14:38,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014509838] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:14:38,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:14:38,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 17:14:38,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524706454] [2022-12-13 17:14:38,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:14:38,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:14:38,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:14:38,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:14:38,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:14:38,627 INFO L87 Difference]: Start difference. First operand 5257 states and 7817 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:39,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:14:39,953 INFO L93 Difference]: Finished difference Result 19861 states and 28623 transitions. [2022-12-13 17:14:39,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:14:39,954 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 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 77 [2022-12-13 17:14:39,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:14:39,990 INFO L225 Difference]: With dead ends: 19861 [2022-12-13 17:14:39,990 INFO L226 Difference]: Without dead ends: 17747 [2022-12-13 17:14:39,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-12-13 17:14:39,995 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 6305 mSDsluCounter, 1984 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6305 SdHoareTripleChecker+Valid, 3588 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:14:39,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6305 Valid, 3588 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:14:40,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17747 states. [2022-12-13 17:14:40,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17747 to 7801. [2022-12-13 17:14:40,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7801 states, 7799 states have (on average 1.4618540838569047) internal successors, (11401), 7800 states have internal predecessors, (11401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:40,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7801 states to 7801 states and 11401 transitions. [2022-12-13 17:14:40,620 INFO L78 Accepts]: Start accepts. Automaton has 7801 states and 11401 transitions. Word has length 77 [2022-12-13 17:14:40,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:14:40,620 INFO L495 AbstractCegarLoop]: Abstraction has 7801 states and 11401 transitions. [2022-12-13 17:14:40,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:40,620 INFO L276 IsEmpty]: Start isEmpty. Operand 7801 states and 11401 transitions. [2022-12-13 17:14:40,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-13 17:14:40,622 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:14:40,622 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:14:40,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 17:14:40,622 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:14:40,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:40,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1775337602, now seen corresponding path program 1 times [2022-12-13 17:14:40,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:40,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677057993] [2022-12-13 17:14:40,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:40,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:40,717 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 17:14:40,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:40,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677057993] [2022-12-13 17:14:40,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677057993] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:14:40,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:14:40,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 17:14:40,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556673244] [2022-12-13 17:14:40,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:14:40,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:14:40,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:14:40,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:14:40,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:14:40,719 INFO L87 Difference]: Start difference. First operand 7801 states and 11401 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:42,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:14:42,704 INFO L93 Difference]: Finished difference Result 22821 states and 32815 transitions. [2022-12-13 17:14:42,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:14:42,705 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 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 77 [2022-12-13 17:14:42,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:14:42,726 INFO L225 Difference]: With dead ends: 22821 [2022-12-13 17:14:42,726 INFO L226 Difference]: Without dead ends: 19859 [2022-12-13 17:14:42,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-12-13 17:14:42,731 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 6351 mSDsluCounter, 2011 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6351 SdHoareTripleChecker+Valid, 3615 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:14:42,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6351 Valid, 3615 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:14:42,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19859 states. [2022-12-13 17:14:43,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19859 to 11817. [2022-12-13 17:14:43,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11817 states, 11815 states have (on average 1.4429961912822682) internal successors, (17049), 11816 states have internal predecessors, (17049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:43,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11817 states to 11817 states and 17049 transitions. [2022-12-13 17:14:43,840 INFO L78 Accepts]: Start accepts. Automaton has 11817 states and 17049 transitions. Word has length 77 [2022-12-13 17:14:43,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:14:43,840 INFO L495 AbstractCegarLoop]: Abstraction has 11817 states and 17049 transitions. [2022-12-13 17:14:43,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:43,840 INFO L276 IsEmpty]: Start isEmpty. Operand 11817 states and 17049 transitions. [2022-12-13 17:14:43,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-13 17:14:43,842 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:14:43,842 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:14:43,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 17:14:43,842 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:14:43,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:43,842 INFO L85 PathProgramCache]: Analyzing trace with hash -440131198, now seen corresponding path program 1 times [2022-12-13 17:14:43,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:43,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709119810] [2022-12-13 17:14:43,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:43,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:43,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:43,934 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 17:14:43,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:43,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709119810] [2022-12-13 17:14:43,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709119810] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:14:43,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:14:43,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 17:14:43,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732089563] [2022-12-13 17:14:43,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:14:43,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:14:43,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:14:43,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:14:43,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:14:43,937 INFO L87 Difference]: Start difference. First operand 11817 states and 17049 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:46,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:14:46,419 INFO L93 Difference]: Finished difference Result 25781 states and 36991 transitions. [2022-12-13 17:14:46,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:14:46,420 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 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 77 [2022-12-13 17:14:46,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:14:46,444 INFO L225 Difference]: With dead ends: 25781 [2022-12-13 17:14:46,445 INFO L226 Difference]: Without dead ends: 22819 [2022-12-13 17:14:46,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-12-13 17:14:46,451 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 6399 mSDsluCounter, 1960 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6399 SdHoareTripleChecker+Valid, 3562 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:14:46,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6399 Valid, 3562 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:14:46,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22819 states. [2022-12-13 17:14:48,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22819 to 14777. [2022-12-13 17:14:48,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14777 states, 14775 states have (on average 1.4365482233502538) internal successors, (21225), 14776 states have internal predecessors, (21225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:48,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14777 states to 14777 states and 21225 transitions. [2022-12-13 17:14:48,192 INFO L78 Accepts]: Start accepts. Automaton has 14777 states and 21225 transitions. Word has length 77 [2022-12-13 17:14:48,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:14:48,192 INFO L495 AbstractCegarLoop]: Abstraction has 14777 states and 21225 transitions. [2022-12-13 17:14:48,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:48,193 INFO L276 IsEmpty]: Start isEmpty. Operand 14777 states and 21225 transitions. [2022-12-13 17:14:48,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-13 17:14:48,194 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:14:48,194 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:14:48,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 17:14:48,195 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:14:48,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:48,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1340801666, now seen corresponding path program 1 times [2022-12-13 17:14:48,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:48,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722633472] [2022-12-13 17:14:48,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:48,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:48,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:48,287 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 17:14:48,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:48,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722633472] [2022-12-13 17:14:48,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722633472] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:14:48,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:14:48,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 17:14:48,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412363454] [2022-12-13 17:14:48,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:14:48,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:14:48,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:14:48,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:14:48,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:14:48,289 INFO L87 Difference]: Start difference. First operand 14777 states and 21225 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:51,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:14:51,384 INFO L93 Difference]: Finished difference Result 28741 states and 41167 transitions. [2022-12-13 17:14:51,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:14:51,384 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 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 77 [2022-12-13 17:14:51,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:14:51,409 INFO L225 Difference]: With dead ends: 28741 [2022-12-13 17:14:51,409 INFO L226 Difference]: Without dead ends: 25779 [2022-12-13 17:14:51,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-12-13 17:14:51,414 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 6355 mSDsluCounter, 2002 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6355 SdHoareTripleChecker+Valid, 3604 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:14:51,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6355 Valid, 3604 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:14:51,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25779 states. [2022-12-13 17:14:53,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25779 to 17737. [2022-12-13 17:14:53,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17737 states, 17735 states have (on average 1.4322526078376092) internal successors, (25401), 17736 states have internal predecessors, (25401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:53,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17737 states to 17737 states and 25401 transitions. [2022-12-13 17:14:53,280 INFO L78 Accepts]: Start accepts. Automaton has 17737 states and 25401 transitions. Word has length 77 [2022-12-13 17:14:53,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:14:53,280 INFO L495 AbstractCegarLoop]: Abstraction has 17737 states and 25401 transitions. [2022-12-13 17:14:53,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:53,281 INFO L276 IsEmpty]: Start isEmpty. Operand 17737 states and 25401 transitions. [2022-12-13 17:14:53,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-13 17:14:53,282 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:14:53,282 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:14:53,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 17:14:53,283 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:14:53,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:53,283 INFO L85 PathProgramCache]: Analyzing trace with hash 537075586, now seen corresponding path program 1 times [2022-12-13 17:14:53,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:53,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136547639] [2022-12-13 17:14:53,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:53,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:53,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:53,374 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 17:14:53,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:53,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136547639] [2022-12-13 17:14:53,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136547639] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:14:53,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:14:53,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 17:14:53,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821331415] [2022-12-13 17:14:53,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:14:53,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:14:53,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:14:53,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:14:53,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:14:53,376 INFO L87 Difference]: Start difference. First operand 17737 states and 25401 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:56,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:14:56,960 INFO L93 Difference]: Finished difference Result 31701 states and 45343 transitions. [2022-12-13 17:14:56,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:14:56,960 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 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 77 [2022-12-13 17:14:56,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:14:56,988 INFO L225 Difference]: With dead ends: 31701 [2022-12-13 17:14:56,988 INFO L226 Difference]: Without dead ends: 28739 [2022-12-13 17:14:56,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-12-13 17:14:56,995 INFO L413 NwaCegarLoop]: 1601 mSDtfsCounter, 6309 mSDsluCounter, 2083 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6309 SdHoareTripleChecker+Valid, 3684 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:14:56,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6309 Valid, 3684 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:14:57,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28739 states. [2022-12-13 17:14:59,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28739 to 20697. [2022-12-13 17:14:59,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20697 states, 20695 states have (on average 1.4291857936699686) internal successors, (29577), 20696 states have internal predecessors, (29577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:59,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20697 states to 20697 states and 29577 transitions. [2022-12-13 17:14:59,406 INFO L78 Accepts]: Start accepts. Automaton has 20697 states and 29577 transitions. Word has length 77 [2022-12-13 17:14:59,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:14:59,406 INFO L495 AbstractCegarLoop]: Abstraction has 20697 states and 29577 transitions. [2022-12-13 17:14:59,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:14:59,406 INFO L276 IsEmpty]: Start isEmpty. Operand 20697 states and 29577 transitions. [2022-12-13 17:14:59,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-12-13 17:14:59,408 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:14:59,408 INFO L195 NwaCegarLoop]: 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] [2022-12-13 17:14:59,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 17:14:59,408 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:14:59,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:59,408 INFO L85 PathProgramCache]: Analyzing trace with hash 895246760, now seen corresponding path program 1 times [2022-12-13 17:14:59,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:59,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441703757] [2022-12-13 17:14:59,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:59,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:59,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:59,460 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:14:59,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:59,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441703757] [2022-12-13 17:14:59,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441703757] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:14:59,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:14:59,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:14:59,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573296073] [2022-12-13 17:14:59,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:14:59,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:14:59,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:14:59,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:14:59,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:14:59,462 INFO L87 Difference]: Start difference. First operand 20697 states and 29577 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:01,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:15:01,790 INFO L93 Difference]: Finished difference Result 39101 states and 55563 transitions. [2022-12-13 17:15:01,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:15:01,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2022-12-13 17:15:01,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:15:01,808 INFO L225 Difference]: With dead ends: 39101 [2022-12-13 17:15:01,808 INFO L226 Difference]: Without dead ends: 20699 [2022-12-13 17:15:01,818 INFO L412 NwaCegarLoop]: 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 [2022-12-13 17:15:01,818 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 45 mSDsluCounter, 1531 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3108 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:15:01,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3108 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:15:01,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20699 states. [2022-12-13 17:15:04,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20699 to 20697. [2022-12-13 17:15:04,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20697 states, 20695 states have (on average 1.4148828219376661) internal successors, (29281), 20696 states have internal predecessors, (29281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:04,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20697 states to 20697 states and 29281 transitions. [2022-12-13 17:15:04,201 INFO L78 Accepts]: Start accepts. Automaton has 20697 states and 29281 transitions. Word has length 78 [2022-12-13 17:15:04,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:15:04,201 INFO L495 AbstractCegarLoop]: Abstraction has 20697 states and 29281 transitions. [2022-12-13 17:15:04,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:04,201 INFO L276 IsEmpty]: Start isEmpty. Operand 20697 states and 29281 transitions. [2022-12-13 17:15:04,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-13 17:15:04,203 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:15:04,203 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:15:04,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 17:15:04,203 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:15:04,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:15:04,203 INFO L85 PathProgramCache]: Analyzing trace with hash -615640646, now seen corresponding path program 1 times [2022-12-13 17:15:04,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:15:04,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472583604] [2022-12-13 17:15:04,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:15:04,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:15:04,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:15:04,253 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:15:04,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:15:04,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472583604] [2022-12-13 17:15:04,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472583604] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:15:04,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:15:04,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:15:04,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697801443] [2022-12-13 17:15:04,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:15:04,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:15:04,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:15:04,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:15:04,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:15:04,255 INFO L87 Difference]: Start difference. First operand 20697 states and 29281 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:05,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:15:05,352 INFO L93 Difference]: Finished difference Result 27584 states and 38975 transitions. [2022-12-13 17:15:05,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:15:05,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-12-13 17:15:05,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:15:05,361 INFO L225 Difference]: With dead ends: 27584 [2022-12-13 17:15:05,361 INFO L226 Difference]: Without dead ends: 9182 [2022-12-13 17:15:05,371 INFO L412 NwaCegarLoop]: 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 [2022-12-13 17:15:05,372 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 39 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3105 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:15:05,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3105 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:15:05,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9182 states. [2022-12-13 17:15:06,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9182 to 9174. [2022-12-13 17:15:06,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9174 states, 9172 states have (on average 1.4363279546445704) internal successors, (13174), 9173 states have internal predecessors, (13174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:06,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9174 states to 9174 states and 13174 transitions. [2022-12-13 17:15:06,325 INFO L78 Accepts]: Start accepts. Automaton has 9174 states and 13174 transitions. Word has length 79 [2022-12-13 17:15:06,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:15:06,325 INFO L495 AbstractCegarLoop]: Abstraction has 9174 states and 13174 transitions. [2022-12-13 17:15:06,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:06,325 INFO L276 IsEmpty]: Start isEmpty. Operand 9174 states and 13174 transitions. [2022-12-13 17:15:06,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-13 17:15:06,326 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:15:06,326 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:15:06,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 17:15:06,326 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:15:06,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:15:06,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1683802150, now seen corresponding path program 1 times [2022-12-13 17:15:06,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:15:06,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819111575] [2022-12-13 17:15:06,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:15:06,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:15:06,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:15:06,378 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:15:06,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:15:06,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819111575] [2022-12-13 17:15:06,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819111575] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:15:06,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:15:06,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:15:06,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272676213] [2022-12-13 17:15:06,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:15:06,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:15:06,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:15:06,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:15:06,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:15:06,380 INFO L87 Difference]: Start difference. First operand 9174 states and 13174 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:06,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:15:06,862 INFO L93 Difference]: Finished difference Result 12610 states and 17960 transitions. [2022-12-13 17:15:06,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:15:06,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-12-13 17:15:06,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:15:06,866 INFO L225 Difference]: With dead ends: 12610 [2022-12-13 17:15:06,866 INFO L226 Difference]: Without dead ends: 5744 [2022-12-13 17:15:06,871 INFO L412 NwaCegarLoop]: 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 [2022-12-13 17:15:06,871 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 41 mSDsluCounter, 1515 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 3084 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:15:06,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 3084 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:15:06,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5744 states. [2022-12-13 17:15:07,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5744 to 5742. [2022-12-13 17:15:07,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5742 states, 5740 states have (on average 1.4526132404181185) internal successors, (8338), 5741 states have internal predecessors, (8338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:07,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5742 states to 5742 states and 8338 transitions. [2022-12-13 17:15:07,326 INFO L78 Accepts]: Start accepts. Automaton has 5742 states and 8338 transitions. Word has length 80 [2022-12-13 17:15:07,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:15:07,326 INFO L495 AbstractCegarLoop]: Abstraction has 5742 states and 8338 transitions. [2022-12-13 17:15:07,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:07,327 INFO L276 IsEmpty]: Start isEmpty. Operand 5742 states and 8338 transitions. [2022-12-13 17:15:07,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-12-13 17:15:07,328 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:15:07,328 INFO L195 NwaCegarLoop]: 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] [2022-12-13 17:15:07,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 17:15:07,328 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:15:07,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:15:07,328 INFO L85 PathProgramCache]: Analyzing trace with hash 263472268, now seen corresponding path program 1 times [2022-12-13 17:15:07,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:15:07,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713982346] [2022-12-13 17:15:07,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:15:07,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:15:07,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:15:07,382 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:15:07,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:15:07,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713982346] [2022-12-13 17:15:07,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713982346] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:15:07,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:15:07,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:15:07,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928392773] [2022-12-13 17:15:07,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:15:07,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:15:07,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:15:07,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:15:07,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:15:07,384 INFO L87 Difference]: Start difference. First operand 5742 states and 8338 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:07,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:15:07,645 INFO L93 Difference]: Finished difference Result 7462 states and 10706 transitions. [2022-12-13 17:15:07,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:15:07,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2022-12-13 17:15:07,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:15:07,649 INFO L225 Difference]: With dead ends: 7462 [2022-12-13 17:15:07,649 INFO L226 Difference]: Without dead ends: 4028 [2022-12-13 17:15:07,651 INFO L412 NwaCegarLoop]: 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 [2022-12-13 17:15:07,651 INFO L413 NwaCegarLoop]: 1562 mSDtfsCounter, 38 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 3069 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:15:07,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 3069 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:15:07,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4028 states. [2022-12-13 17:15:07,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4028 to 4026. [2022-12-13 17:15:07,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4026 states, 4024 states have (on average 1.4776341948310139) internal successors, (5946), 4025 states have internal predecessors, (5946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:07,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4026 states to 4026 states and 5946 transitions. [2022-12-13 17:15:07,892 INFO L78 Accepts]: Start accepts. Automaton has 4026 states and 5946 transitions. Word has length 82 [2022-12-13 17:15:07,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:15:07,892 INFO L495 AbstractCegarLoop]: Abstraction has 4026 states and 5946 transitions. [2022-12-13 17:15:07,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:07,892 INFO L276 IsEmpty]: Start isEmpty. Operand 4026 states and 5946 transitions. [2022-12-13 17:15:07,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-12-13 17:15:07,893 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:15:07,893 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:15:07,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 17:15:07,893 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:15:07,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:15:07,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1956730946, now seen corresponding path program 1 times [2022-12-13 17:15:07,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:15:07,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742483648] [2022-12-13 17:15:07,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:15:07,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:15:07,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:15:07,938 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:15:07,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:15:07,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742483648] [2022-12-13 17:15:07,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742483648] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:15:07,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:15:07,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:15:07,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309517416] [2022-12-13 17:15:07,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:15:07,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:15:07,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:15:07,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:15:07,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:15:07,940 INFO L87 Difference]: Start difference. First operand 4026 states and 5946 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:08,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:15:08,081 INFO L93 Difference]: Finished difference Result 4888 states and 7118 transitions. [2022-12-13 17:15:08,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:15:08,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2022-12-13 17:15:08,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:15:08,083 INFO L225 Difference]: With dead ends: 4888 [2022-12-13 17:15:08,083 INFO L226 Difference]: Without dead ends: 3170 [2022-12-13 17:15:08,085 INFO L412 NwaCegarLoop]: 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 [2022-12-13 17:15:08,085 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 35 mSDsluCounter, 1499 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 3054 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:15:08,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 3054 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:15:08,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3170 states. [2022-12-13 17:15:08,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3170 to 3168. [2022-12-13 17:15:08,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3168 states, 3166 states have (on average 1.5044219835754895) internal successors, (4763), 3167 states have internal predecessors, (4763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:08,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3168 states to 3168 states and 4763 transitions. [2022-12-13 17:15:08,219 INFO L78 Accepts]: Start accepts. Automaton has 3168 states and 4763 transitions. Word has length 84 [2022-12-13 17:15:08,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:15:08,219 INFO L495 AbstractCegarLoop]: Abstraction has 3168 states and 4763 transitions. [2022-12-13 17:15:08,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:08,219 INFO L276 IsEmpty]: Start isEmpty. Operand 3168 states and 4763 transitions. [2022-12-13 17:15:08,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-12-13 17:15:08,220 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:15:08,220 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 17:15:08,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 17:15:08,220 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:15:08,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:15:08,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1389986160, now seen corresponding path program 1 times [2022-12-13 17:15:08,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:15:08,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119454930] [2022-12-13 17:15:08,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:15:08,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:15:08,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:15:08,475 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:15:08,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:15:08,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119454930] [2022-12-13 17:15:08,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119454930] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:15:08,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542040520] [2022-12-13 17:15:08,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:15:08,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:15:08,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_131c69bd-6248-40ad-8903-471afe5fe252/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:15:08,477 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_131c69bd-6248-40ad-8903-471afe5fe252/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:15:08,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_131c69bd-6248-40ad-8903-471afe5fe252/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 17:15:08,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:15:08,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 17:15:08,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:15:08,820 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 17:15:08,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:15:08,962 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 17:15:08,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542040520] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:15:08,962 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:15:08,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4, 4] total 14 [2022-12-13 17:15:08,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656925882] [2022-12-13 17:15:08,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:15:08,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 17:15:08,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:15:08,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 17:15:08,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-12-13 17:15:08,964 INFO L87 Difference]: Start difference. First operand 3168 states and 4763 transitions. Second operand has 14 states, 14 states have (on average 17.214285714285715) internal successors, (241), 14 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:12,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:15:12,138 INFO L93 Difference]: Finished difference Result 9880 states and 13767 transitions. [2022-12-13 17:15:12,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-13 17:15:12,139 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 17.214285714285715) internal successors, (241), 14 states have internal predecessors, (241), 0 states have call successors, (0), 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 86 [2022-12-13 17:15:12,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:15:12,145 INFO L225 Difference]: With dead ends: 9880 [2022-12-13 17:15:12,146 INFO L226 Difference]: Without dead ends: 9020 [2022-12-13 17:15:12,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=438, Invalid=1454, Unknown=0, NotChecked=0, Total=1892 [2022-12-13 17:15:12,148 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 15292 mSDsluCounter, 3534 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15292 SdHoareTripleChecker+Valid, 5063 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 17:15:12,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15292 Valid, 5063 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 17:15:12,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9020 states. [2022-12-13 17:15:13,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9020 to 7504. [2022-12-13 17:15:13,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7504 states, 7502 states have (on average 1.3700346574246867) internal successors, (10278), 7503 states have internal predecessors, (10278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:13,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7504 states to 7504 states and 10278 transitions. [2022-12-13 17:15:13,053 INFO L78 Accepts]: Start accepts. Automaton has 7504 states and 10278 transitions. Word has length 86 [2022-12-13 17:15:13,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:15:13,053 INFO L495 AbstractCegarLoop]: Abstraction has 7504 states and 10278 transitions. [2022-12-13 17:15:13,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.214285714285715) internal successors, (241), 14 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:13,053 INFO L276 IsEmpty]: Start isEmpty. Operand 7504 states and 10278 transitions. [2022-12-13 17:15:13,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-12-13 17:15:13,054 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:15:13,054 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 17:15:13,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_131c69bd-6248-40ad-8903-471afe5fe252/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 17:15:13,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_131c69bd-6248-40ad-8903-471afe5fe252/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:15:13,255 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:15:13,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:15:13,256 INFO L85 PathProgramCache]: Analyzing trace with hash -6722204, now seen corresponding path program 1 times [2022-12-13 17:15:13,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:15:13,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262856280] [2022-12-13 17:15:13,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:15:13,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:15:13,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:15:13,560 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:15:13,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:15:13,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262856280] [2022-12-13 17:15:13,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262856280] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:15:13,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305593267] [2022-12-13 17:15:13,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:15:13,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:15:13,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_131c69bd-6248-40ad-8903-471afe5fe252/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:15:13,562 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_131c69bd-6248-40ad-8903-471afe5fe252/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:15:13,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_131c69bd-6248-40ad-8903-471afe5fe252/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 17:15:13,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:15:13,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 17:15:13,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:15:14,348 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:15:14,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:15:15,331 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:15:15,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305593267] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:15:15,331 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:15:15,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2022-12-13 17:15:15,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242426507] [2022-12-13 17:15:15,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:15:15,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 17:15:15,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:15:15,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 17:15:15,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2022-12-13 17:15:15,333 INFO L87 Difference]: Start difference. First operand 7504 states and 10278 transitions. Second operand has 25 states, 25 states have (on average 9.8) internal successors, (245), 24 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:25,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:15:25,582 INFO L93 Difference]: Finished difference Result 39438 states and 49761 transitions. [2022-12-13 17:15:25,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-12-13 17:15:25,583 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 9.8) internal successors, (245), 24 states have internal predecessors, (245), 0 states have call successors, (0), 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 [2022-12-13 17:15:25,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:15:25,611 INFO L225 Difference]: With dead ends: 39438 [2022-12-13 17:15:25,611 INFO L226 Difference]: Without dead ends: 34420 [2022-12-13 17:15:25,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 157 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 965 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=823, Invalid=3337, Unknown=0, NotChecked=0, Total=4160 [2022-12-13 17:15:25,619 INFO L413 NwaCegarLoop]: 1565 mSDtfsCounter, 22885 mSDsluCounter, 7003 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22885 SdHoareTripleChecker+Valid, 8568 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 17:15:25,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22885 Valid, 8568 Invalid, 907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 870 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 17:15:25,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34420 states. [2022-12-13 17:15:30,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34420 to 23301. [2022-12-13 17:15:30,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23301 states, 23299 states have (on average 1.282243873127602) internal successors, (29875), 23300 states have internal predecessors, (29875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:30,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23301 states to 23301 states and 29875 transitions. [2022-12-13 17:15:30,149 INFO L78 Accepts]: Start accepts. Automaton has 23301 states and 29875 transitions. Word has length 87 [2022-12-13 17:15:30,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:15:30,149 INFO L495 AbstractCegarLoop]: Abstraction has 23301 states and 29875 transitions. [2022-12-13 17:15:30,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 9.8) internal successors, (245), 24 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:30,149 INFO L276 IsEmpty]: Start isEmpty. Operand 23301 states and 29875 transitions. [2022-12-13 17:15:30,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-12-13 17:15:30,150 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:15:30,150 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 17:15:30,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_131c69bd-6248-40ad-8903-471afe5fe252/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 17:15:30,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_131c69bd-6248-40ad-8903-471afe5fe252/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:15:30,352 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:15:30,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:15:30,354 INFO L85 PathProgramCache]: Analyzing trace with hash -2042803566, now seen corresponding path program 1 times [2022-12-13 17:15:30,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:15:30,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414268404] [2022-12-13 17:15:30,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:15:30,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:15:30,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:15:30,762 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:15:30,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:15:30,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414268404] [2022-12-13 17:15:30,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414268404] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:15:30,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532459311] [2022-12-13 17:15:30,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:15:30,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:15:30,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_131c69bd-6248-40ad-8903-471afe5fe252/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:15:30,764 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_131c69bd-6248-40ad-8903-471afe5fe252/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:15:30,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_131c69bd-6248-40ad-8903-471afe5fe252/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 17:15:30,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:15:30,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 17:15:30,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:15:31,204 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:15:31,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:15:31,649 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:15:31,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532459311] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:15:31,649 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:15:31,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 25 [2022-12-13 17:15:31,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11673964] [2022-12-13 17:15:31,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:15:31,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-13 17:15:31,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:15:31,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-13 17:15:31,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=534, Unknown=0, NotChecked=0, Total=650 [2022-12-13 17:15:31,651 INFO L87 Difference]: Start difference. First operand 23301 states and 29875 transitions. Second operand has 26 states, 26 states have (on average 8.538461538461538) internal successors, (222), 25 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:15:49,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:15:49,770 INFO L93 Difference]: Finished difference Result 82668 states and 103829 transitions. [2022-12-13 17:15:49,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 17:15:49,771 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 8.538461538461538) internal successors, (222), 25 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-12-13 17:15:49,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:15:49,836 INFO L225 Difference]: With dead ends: 82668 [2022-12-13 17:15:49,836 INFO L226 Difference]: Without dead ends: 64188 [2022-12-13 17:15:49,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=341, Invalid=1141, Unknown=0, NotChecked=0, Total=1482 [2022-12-13 17:15:49,853 INFO L413 NwaCegarLoop]: 1526 mSDtfsCounter, 12536 mSDsluCounter, 4875 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12536 SdHoareTripleChecker+Valid, 6401 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 17:15:49,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12536 Valid, 6401 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 17:15:49,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64188 states. [2022-12-13 17:16:00,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64188 to 44670. [2022-12-13 17:16:00,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44670 states, 44668 states have (on average 1.2548356765469688) internal successors, (56051), 44669 states have internal predecessors, (56051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:00,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44670 states to 44670 states and 56051 transitions. [2022-12-13 17:16:00,585 INFO L78 Accepts]: Start accepts. Automaton has 44670 states and 56051 transitions. Word has length 88 [2022-12-13 17:16:00,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:16:00,585 INFO L495 AbstractCegarLoop]: Abstraction has 44670 states and 56051 transitions. [2022-12-13 17:16:00,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 8.538461538461538) internal successors, (222), 25 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:00,585 INFO L276 IsEmpty]: Start isEmpty. Operand 44670 states and 56051 transitions. [2022-12-13 17:16:00,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-12-13 17:16:00,587 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:16:00,587 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 17:16:00,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_131c69bd-6248-40ad-8903-471afe5fe252/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 17:16:00,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_131c69bd-6248-40ad-8903-471afe5fe252/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:16:00,788 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:16:00,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:16:00,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1659093216, now seen corresponding path program 1 times [2022-12-13 17:16:00,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:16:00,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128247097] [2022-12-13 17:16:00,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:16:00,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:16:00,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:16:01,122 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:01,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:16:01,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128247097] [2022-12-13 17:16:01,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128247097] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:16:01,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191214620] [2022-12-13 17:16:01,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:16:01,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:16:01,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_131c69bd-6248-40ad-8903-471afe5fe252/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:16:01,123 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_131c69bd-6248-40ad-8903-471afe5fe252/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:16:01,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_131c69bd-6248-40ad-8903-471afe5fe252/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 17:16:01,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:16:01,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 45 conjunts are in the unsatisfiable core [2022-12-13 17:16:01,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:16:09,310 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:09,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:16:16,047 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:16,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191214620] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:16:16,047 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:16:16,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 20, 22] total 48 [2022-12-13 17:16:16,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107612649] [2022-12-13 17:16:16,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:16:16,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-13 17:16:16,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:16:16,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-13 17:16:16,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=1979, Unknown=0, NotChecked=0, Total=2256 [2022-12-13 17:16:16,050 INFO L87 Difference]: Start difference. First operand 44670 states and 56051 transitions. Second operand has 48 states, 48 states have (on average 5.0) internal successors, (240), 48 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:25:27,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:25:27,298 INFO L93 Difference]: Finished difference Result 349533 states and 428891 transitions. [2022-12-13 17:25:27,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 631 states. [2022-12-13 17:25:27,299 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 5.0) internal successors, (240), 48 states have internal predecessors, (240), 0 states have call successors, (0), 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 89 [2022-12-13 17:25:27,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:25:27,783 INFO L225 Difference]: With dead ends: 349533 [2022-12-13 17:25:27,784 INFO L226 Difference]: Without dead ends: 310527 [2022-12-13 17:25:27,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 815 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 675 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221460 ImplicationChecksByTransitivity, 411.4s TimeCoverageRelationStatistics Valid=50311, Invalid=407341, Unknown=0, NotChecked=0, Total=457652 [2022-12-13 17:25:27,901 INFO L413 NwaCegarLoop]: 1973 mSDtfsCounter, 35974 mSDsluCounter, 29780 mSDsCounter, 0 mSdLazyCounter, 9527 mSolverCounterSat, 370 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35974 SdHoareTripleChecker+Valid, 31753 SdHoareTripleChecker+Invalid, 9897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 9527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2022-12-13 17:25:27,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35974 Valid, 31753 Invalid, 9897 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [370 Valid, 9527 Invalid, 0 Unknown, 0 Unchecked, 16.8s Time] [2022-12-13 17:25:28,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310527 states. [2022-12-13 17:26:21,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310527 to 121765. [2022-12-13 17:26:21,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121765 states, 121763 states have (on average 1.2420686086906532) internal successors, (151238), 121764 states have internal predecessors, (151238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:26:21,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121765 states to 121765 states and 151238 transitions. [2022-12-13 17:26:21,649 INFO L78 Accepts]: Start accepts. Automaton has 121765 states and 151238 transitions. Word has length 89 [2022-12-13 17:26:21,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:26:21,649 INFO L495 AbstractCegarLoop]: Abstraction has 121765 states and 151238 transitions. [2022-12-13 17:26:21,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 5.0) internal successors, (240), 48 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:26:21,649 INFO L276 IsEmpty]: Start isEmpty. Operand 121765 states and 151238 transitions. [2022-12-13 17:26:21,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 17:26:21,651 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:26:21,651 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 17:26:21,656 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_131c69bd-6248-40ad-8903-471afe5fe252/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 17:26:21,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_131c69bd-6248-40ad-8903-471afe5fe252/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-13 17:26:21,853 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:26:21,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:26:21,854 INFO L85 PathProgramCache]: Analyzing trace with hash 41891138, now seen corresponding path program 1 times [2022-12-13 17:26:21,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:26:21,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787192646] [2022-12-13 17:26:21,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:26:21,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:26:21,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:22,418 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:26:22,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:26:22,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787192646] [2022-12-13 17:26:22,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787192646] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:26:22,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039259521] [2022-12-13 17:26:22,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:26:22,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:26:22,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_131c69bd-6248-40ad-8903-471afe5fe252/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:26:22,419 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_131c69bd-6248-40ad-8903-471afe5fe252/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:26:22,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_131c69bd-6248-40ad-8903-471afe5fe252/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 17:26:22,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:22,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 17:26:22,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:26:23,394 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:26:23,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:26:25,083 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:26:25,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039259521] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:26:25,084 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:26:25,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 36 [2022-12-13 17:26:25,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084940379] [2022-12-13 17:26:25,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:26:25,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-12-13 17:26:25,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:26:25,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-12-13 17:26:25,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1142, Unknown=0, NotChecked=0, Total=1260 [2022-12-13 17:26:25,085 INFO L87 Difference]: Start difference. First operand 121765 states and 151238 transitions. Second operand has 36 states, 36 states have (on average 6.888888888888889) internal successors, (248), 36 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)