./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696b8590-806a-4dfe-809f-1a9a16a829be/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696b8590-806a-4dfe-809f-1a9a16a829be/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696b8590-806a-4dfe-809f-1a9a16a829be/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696b8590-806a-4dfe-809f-1a9a16a829be/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696b8590-806a-4dfe-809f-1a9a16a829be/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696b8590-806a-4dfe-809f-1a9a16a829be/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 588484d75150429774731f7aacf4daf77752c68fdc38fffa31465a5f910e2823 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 17:18:01,018 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 17:18:01,019 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 17:18:01,042 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 17:18:01,043 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 17:18:01,044 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 17:18:01,045 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 17:18:01,047 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 17:18:01,048 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 17:18:01,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 17:18:01,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 17:18:01,051 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 17:18:01,051 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 17:18:01,052 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 17:18:01,053 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 17:18:01,054 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 17:18:01,055 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 17:18:01,056 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 17:18:01,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 17:18:01,059 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 17:18:01,061 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 17:18:01,062 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 17:18:01,063 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 17:18:01,063 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 17:18:01,066 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 17:18:01,066 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 17:18:01,067 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 17:18:01,067 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 17:18:01,068 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 17:18:01,069 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 17:18:01,069 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 17:18:01,070 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 17:18:01,070 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 17:18:01,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 17:18:01,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 17:18:01,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 17:18:01,072 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 17:18:01,072 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 17:18:01,073 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 17:18:01,073 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 17:18:01,074 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 17:18:01,074 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696b8590-806a-4dfe-809f-1a9a16a829be/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 17:18:01,090 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 17:18:01,091 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 17:18:01,091 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 17:18:01,091 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 17:18:01,091 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 17:18:01,092 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 17:18:01,092 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 17:18:01,092 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 17:18:01,092 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 17:18:01,093 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 17:18:01,093 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 17:18:01,093 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 17:18:01,093 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 17:18:01,093 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 17:18:01,093 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 17:18:01,093 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 17:18:01,093 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 17:18:01,093 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 17:18:01,094 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 17:18:01,094 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 17:18:01,094 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 17:18:01,094 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 17:18:01,094 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 17:18:01,094 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 17:18:01,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:18:01,095 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 17:18:01,095 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 17:18:01,095 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 17:18:01,095 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 17:18:01,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 17:18:01,095 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 17:18:01,095 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 17:18:01,095 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 17:18:01,096 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 17:18:01,096 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696b8590-806a-4dfe-809f-1a9a16a829be/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696b8590-806a-4dfe-809f-1a9a16a829be/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 588484d75150429774731f7aacf4daf77752c68fdc38fffa31465a5f910e2823 [2021-12-06 17:18:01,277 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 17:18:01,292 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 17:18:01,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 17:18:01,295 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 17:18:01,295 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 17:18:01,296 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696b8590-806a-4dfe-809f-1a9a16a829be/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c [2021-12-06 17:18:01,339 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696b8590-806a-4dfe-809f-1a9a16a829be/bin/uautomizer-DrprNOufMa/data/616d23ace/9b1eb88c4aed4bc5bad5ddf7e47cb17b/FLAG8eec83023 [2021-12-06 17:18:01,713 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 17:18:01,714 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696b8590-806a-4dfe-809f-1a9a16a829be/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c [2021-12-06 17:18:01,723 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696b8590-806a-4dfe-809f-1a9a16a829be/bin/uautomizer-DrprNOufMa/data/616d23ace/9b1eb88c4aed4bc5bad5ddf7e47cb17b/FLAG8eec83023 [2021-12-06 17:18:01,733 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696b8590-806a-4dfe-809f-1a9a16a829be/bin/uautomizer-DrprNOufMa/data/616d23ace/9b1eb88c4aed4bc5bad5ddf7e47cb17b [2021-12-06 17:18:01,735 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 17:18:01,736 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 17:18:01,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 17:18:01,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 17:18:01,745 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 17:18:01,745 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:18:01" (1/1) ... [2021-12-06 17:18:01,746 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39c878de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:18:01, skipping insertion in model container [2021-12-06 17:18:01,746 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:18:01" (1/1) ... [2021-12-06 17:18:01,751 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 17:18:01,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 17:18:01,957 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696b8590-806a-4dfe-809f-1a9a16a829be/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c[14511,14524] [2021-12-06 17:18:01,960 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:18:01,968 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 17:18:02,025 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696b8590-806a-4dfe-809f-1a9a16a829be/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c[14511,14524] [2021-12-06 17:18:02,025 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:18:02,040 INFO L208 MainTranslator]: Completed translation [2021-12-06 17:18:02,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:18:02 WrapperNode [2021-12-06 17:18:02,041 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 17:18:02,042 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 17:18:02,042 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 17:18:02,042 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 17:18:02,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:18:02" (1/1) ... [2021-12-06 17:18:02,058 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:18:02" (1/1) ... [2021-12-06 17:18:02,091 INFO L137 Inliner]: procedures = 23, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 479 [2021-12-06 17:18:02,092 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 17:18:02,092 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 17:18:02,092 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 17:18:02,093 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 17:18:02,101 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:18:02" (1/1) ... [2021-12-06 17:18:02,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:18:02" (1/1) ... [2021-12-06 17:18:02,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:18:02" (1/1) ... [2021-12-06 17:18:02,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:18:02" (1/1) ... [2021-12-06 17:18:02,116 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:18:02" (1/1) ... [2021-12-06 17:18:02,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:18:02" (1/1) ... [2021-12-06 17:18:02,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:18:02" (1/1) ... [2021-12-06 17:18:02,132 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 17:18:02,133 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 17:18:02,133 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 17:18:02,133 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 17:18:02,134 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:18:02" (1/1) ... [2021-12-06 17:18:02,141 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:18:02,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696b8590-806a-4dfe-809f-1a9a16a829be/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:18:02,163 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696b8590-806a-4dfe-809f-1a9a16a829be/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 17:18:02,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696b8590-806a-4dfe-809f-1a9a16a829be/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 17:18:02,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 17:18:02,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 17:18:02,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 17:18:02,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 17:18:02,264 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 17:18:02,266 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 17:18:02,650 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 17:18:02,659 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 17:18:02,659 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 17:18:02,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:18:02 BoogieIcfgContainer [2021-12-06 17:18:02,661 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 17:18:02,663 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 17:18:02,663 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 17:18:02,666 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 17:18:02,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:18:01" (1/3) ... [2021-12-06 17:18:02,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a241d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:18:02, skipping insertion in model container [2021-12-06 17:18:02,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:18:02" (2/3) ... [2021-12-06 17:18:02,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a241d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:18:02, skipping insertion in model container [2021-12-06 17:18:02,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:18:02" (3/3) ... [2021-12-06 17:18:02,669 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c [2021-12-06 17:18:02,673 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 17:18:02,673 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 17:18:02,708 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 17:18:02,713 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 17:18:02,713 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 17:18:02,727 INFO L276 IsEmpty]: Start isEmpty. Operand has 149 states, 147 states have (on average 1.748299319727891) internal successors, (257), 148 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:18:02,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-06 17:18:02,733 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:18:02,734 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:18:02,734 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:18:02,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:18:02,738 INFO L85 PathProgramCache]: Analyzing trace with hash -812713456, now seen corresponding path program 1 times [2021-12-06 17:18:02,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:18:02,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595981482] [2021-12-06 17:18:02,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:18:02,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:18:02,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:18:02,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:18:02,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:18:02,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595981482] [2021-12-06 17:18:02,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595981482] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:18:02,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:18:02,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 17:18:02,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108227010] [2021-12-06 17:18:02,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:18:02,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 17:18:02,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:18:02,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 17:18:02,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 17:18:02,924 INFO L87 Difference]: Start difference. First operand has 149 states, 147 states have (on average 1.748299319727891) internal successors, (257), 148 states have internal predecessors, (257), 0 states have call successors, (0), 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 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:18:02,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:18:02,952 INFO L93 Difference]: Finished difference Result 235 states and 403 transitions. [2021-12-06 17:18:02,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 17:18:02,954 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2021-12-06 17:18:02,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:18:02,964 INFO L225 Difference]: With dead ends: 235 [2021-12-06 17:18:02,964 INFO L226 Difference]: Without dead ends: 145 [2021-12-06 17:18:02,967 INFO L932 BasicCegarLoop]: 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 [2021-12-06 17:18:02,970 INFO L933 BasicCegarLoop]: 250 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, 250 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 [2021-12-06 17:18:02,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:18:02,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-12-06 17:18:03,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-12-06 17:18:03,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.7361111111111112) internal successors, (250), 144 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:18:03,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 250 transitions. [2021-12-06 17:18:03,008 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 250 transitions. Word has length 37 [2021-12-06 17:18:03,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:18:03,008 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 250 transitions. [2021-12-06 17:18:03,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:18:03,009 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 250 transitions. [2021-12-06 17:18:03,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-06 17:18:03,011 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:18:03,011 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:18:03,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 17:18:03,012 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:18:03,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:18:03,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1630361906, now seen corresponding path program 1 times [2021-12-06 17:18:03,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:18:03,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229514381] [2021-12-06 17:18:03,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:18:03,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:18:03,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:18:03,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:18:03,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:18:03,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229514381] [2021-12-06 17:18:03,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229514381] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:18:03,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:18:03,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:18:03,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873049730] [2021-12-06 17:18:03,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:18:03,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:18:03,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:18:03,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:18:03,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:18:03,104 INFO L87 Difference]: Start difference. First operand 145 states and 250 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:18:03,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:18:03,165 INFO L93 Difference]: Finished difference Result 234 states and 396 transitions. [2021-12-06 17:18:03,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:18:03,165 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2021-12-06 17:18:03,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:18:03,167 INFO L225 Difference]: With dead ends: 234 [2021-12-06 17:18:03,167 INFO L226 Difference]: Without dead ends: 145 [2021-12-06 17:18:03,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:18:03,168 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 3 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:18:03,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 959 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:18:03,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-12-06 17:18:03,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-12-06 17:18:03,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.5277777777777777) internal successors, (220), 144 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:18:03,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 220 transitions. [2021-12-06 17:18:03,178 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 220 transitions. Word has length 37 [2021-12-06 17:18:03,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:18:03,178 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 220 transitions. [2021-12-06 17:18:03,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:18:03,178 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 220 transitions. [2021-12-06 17:18:03,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-06 17:18:03,180 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:18:03,180 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:18:03,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 17:18:03,181 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:18:03,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:18:03,181 INFO L85 PathProgramCache]: Analyzing trace with hash 190573204, now seen corresponding path program 1 times [2021-12-06 17:18:03,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:18:03,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502251903] [2021-12-06 17:18:03,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:18:03,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:18:03,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:18:03,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:18:03,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:18:03,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502251903] [2021-12-06 17:18:03,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502251903] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:18:03,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:18:03,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:18:03,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056664588] [2021-12-06 17:18:03,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:18:03,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:18:03,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:18:03,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:18:03,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:18:03,294 INFO L87 Difference]: Start difference. First operand 145 states and 220 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:18:03,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:18:03,336 INFO L93 Difference]: Finished difference Result 305 states and 486 transitions. [2021-12-06 17:18:03,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:18:03,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2021-12-06 17:18:03,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:18:03,339 INFO L225 Difference]: With dead ends: 305 [2021-12-06 17:18:03,339 INFO L226 Difference]: Without dead ends: 220 [2021-12-06 17:18:03,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:18:03,341 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 115 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:18:03,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 388 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:18:03,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-12-06 17:18:03,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 217. [2021-12-06 17:18:03,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.5555555555555556) internal successors, (336), 216 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:18:03,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 336 transitions. [2021-12-06 17:18:03,357 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 336 transitions. Word has length 66 [2021-12-06 17:18:03,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:18:03,358 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 336 transitions. [2021-12-06 17:18:03,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:18:03,358 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 336 transitions. [2021-12-06 17:18:03,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-06 17:18:03,361 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:18:03,361 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:18:03,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 17:18:03,361 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:18:03,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:18:03,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1527919177, now seen corresponding path program 1 times [2021-12-06 17:18:03,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:18:03,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726887712] [2021-12-06 17:18:03,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:18:03,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:18:03,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:18:03,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:18:03,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:18:03,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726887712] [2021-12-06 17:18:03,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726887712] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:18:03,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:18:03,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:18:03,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076487553] [2021-12-06 17:18:03,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:18:03,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:18:03,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:18:03,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:18:03,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:18:03,438 INFO L87 Difference]: Start difference. First operand 217 states and 336 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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) [2021-12-06 17:18:03,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:18:03,466 INFO L93 Difference]: Finished difference Result 515 states and 824 transitions. [2021-12-06 17:18:03,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:18:03,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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 68 [2021-12-06 17:18:03,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:18:03,470 INFO L225 Difference]: With dead ends: 515 [2021-12-06 17:18:03,470 INFO L226 Difference]: Without dead ends: 358 [2021-12-06 17:18:03,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:18:03,473 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 117 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:18:03,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 401 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:18:03,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-12-06 17:18:03,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 354. [2021-12-06 17:18:03,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 353 states have (on average 1.5835694050991502) internal successors, (559), 353 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:18:03,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 559 transitions. [2021-12-06 17:18:03,494 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 559 transitions. Word has length 68 [2021-12-06 17:18:03,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:18:03,495 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 559 transitions. [2021-12-06 17:18:03,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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) [2021-12-06 17:18:03,495 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 559 transitions. [2021-12-06 17:18:03,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-06 17:18:03,498 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:18:03,498 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:18:03,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 17:18:03,498 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:18:03,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:18:03,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1063335298, now seen corresponding path program 1 times [2021-12-06 17:18:03,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:18:03,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271300662] [2021-12-06 17:18:03,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:18:03,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:18:03,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:18:03,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:18:03,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:18:03,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271300662] [2021-12-06 17:18:03,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271300662] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:18:03,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:18:03,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:18:03,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253444476] [2021-12-06 17:18:03,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:18:03,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:18:03,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:18:03,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:18:03,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:18:03,566 INFO L87 Difference]: Start difference. First operand 354 states and 559 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 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) [2021-12-06 17:18:03,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:18:03,608 INFO L93 Difference]: Finished difference Result 910 states and 1465 transitions. [2021-12-06 17:18:03,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:18:03,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 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 70 [2021-12-06 17:18:03,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:18:03,613 INFO L225 Difference]: With dead ends: 910 [2021-12-06 17:18:03,613 INFO L226 Difference]: Without dead ends: 616 [2021-12-06 17:18:03,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:18:03,615 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 111 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:18:03,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 402 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:18:03,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2021-12-06 17:18:03,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 610. [2021-12-06 17:18:03,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 609 states have (on average 1.5944170771756978) internal successors, (971), 609 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:18:03,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 971 transitions. [2021-12-06 17:18:03,637 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 971 transitions. Word has length 70 [2021-12-06 17:18:03,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:18:03,638 INFO L470 AbstractCegarLoop]: Abstraction has 610 states and 971 transitions. [2021-12-06 17:18:03,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 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) [2021-12-06 17:18:03,638 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 971 transitions. [2021-12-06 17:18:03,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-06 17:18:03,639 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:18:03,639 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:18:03,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 17:18:03,639 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:18:03,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:18:03,640 INFO L85 PathProgramCache]: Analyzing trace with hash 845837107, now seen corresponding path program 1 times [2021-12-06 17:18:03,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:18:03,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057391649] [2021-12-06 17:18:03,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:18:03,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:18:03,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:18:03,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:18:03,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:18:03,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057391649] [2021-12-06 17:18:03,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057391649] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:18:03,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:18:03,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:18:03,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282191163] [2021-12-06 17:18:03,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:18:03,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:18:03,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:18:03,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:18:03,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:18:03,686 INFO L87 Difference]: Start difference. First operand 610 states and 971 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 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) [2021-12-06 17:18:03,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:18:03,827 INFO L93 Difference]: Finished difference Result 2622 states and 4281 transitions. [2021-12-06 17:18:03,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:18:03,827 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 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 72 [2021-12-06 17:18:03,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:18:03,840 INFO L225 Difference]: With dead ends: 2622 [2021-12-06 17:18:03,841 INFO L226 Difference]: Without dead ends: 2072 [2021-12-06 17:18:03,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:18:03,843 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 936 mSDsluCounter, 1077 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 936 SdHoareTripleChecker+Valid, 1286 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:18:03,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [936 Valid, 1286 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:18:03,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2021-12-06 17:18:03,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 1092. [2021-12-06 17:18:03,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1092 states, 1091 states have (on average 1.6076993583868011) internal successors, (1754), 1091 states have internal predecessors, (1754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:18:03,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1092 states to 1092 states and 1754 transitions. [2021-12-06 17:18:03,904 INFO L78 Accepts]: Start accepts. Automaton has 1092 states and 1754 transitions. Word has length 72 [2021-12-06 17:18:03,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:18:03,905 INFO L470 AbstractCegarLoop]: Abstraction has 1092 states and 1754 transitions. [2021-12-06 17:18:03,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 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) [2021-12-06 17:18:03,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1092 states and 1754 transitions. [2021-12-06 17:18:03,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-06 17:18:03,906 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:18:03,906 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:18:03,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 17:18:03,907 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:18:03,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:18:03,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1471686026, now seen corresponding path program 1 times [2021-12-06 17:18:03,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:18:03,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875275036] [2021-12-06 17:18:03,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:18:03,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:18:03,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:18:03,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:18:03,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:18:03,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875275036] [2021-12-06 17:18:03,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875275036] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:18:03,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:18:03,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 17:18:03,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346722618] [2021-12-06 17:18:03,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:18:03,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:18:03,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:18:03,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:18:03,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 17:18:03,960 INFO L87 Difference]: Start difference. First operand 1092 states and 1754 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:18:04,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:18:04,060 INFO L93 Difference]: Finished difference Result 3182 states and 5186 transitions. [2021-12-06 17:18:04,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 17:18:04,061 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2021-12-06 17:18:04,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:18:04,073 INFO L225 Difference]: With dead ends: 3182 [2021-12-06 17:18:04,074 INFO L226 Difference]: Without dead ends: 2150 [2021-12-06 17:18:04,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:18:04,077 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 413 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:18:04,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [413 Valid, 723 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:18:04,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2150 states. [2021-12-06 17:18:04,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2150 to 1612. [2021-12-06 17:18:04,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1612 states, 1611 states have (on average 1.6157666045934203) internal successors, (2603), 1611 states have internal predecessors, (2603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:18:04,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1612 states to 1612 states and 2603 transitions. [2021-12-06 17:18:04,156 INFO L78 Accepts]: Start accepts. Automaton has 1612 states and 2603 transitions. Word has length 73 [2021-12-06 17:18:04,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:18:04,156 INFO L470 AbstractCegarLoop]: Abstraction has 1612 states and 2603 transitions. [2021-12-06 17:18:04,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:18:04,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1612 states and 2603 transitions. [2021-12-06 17:18:04,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-06 17:18:04,158 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:18:04,158 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:18:04,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 17:18:04,158 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:18:04,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:18:04,159 INFO L85 PathProgramCache]: Analyzing trace with hash -131454774, now seen corresponding path program 1 times [2021-12-06 17:18:04,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:18:04,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338796088] [2021-12-06 17:18:04,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:18:04,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:18:04,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:18:04,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:18:04,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:18:04,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338796088] [2021-12-06 17:18:04,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338796088] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:18:04,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:18:04,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 17:18:04,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119072055] [2021-12-06 17:18:04,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:18:04,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:18:04,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:18:04,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:18:04,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 17:18:04,204 INFO L87 Difference]: Start difference. First operand 1612 states and 2603 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 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) [2021-12-06 17:18:04,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:18:04,296 INFO L93 Difference]: Finished difference Result 4676 states and 7610 transitions. [2021-12-06 17:18:04,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 17:18:04,297 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 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 74 [2021-12-06 17:18:04,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:18:04,310 INFO L225 Difference]: With dead ends: 4676 [2021-12-06 17:18:04,310 INFO L226 Difference]: Without dead ends: 3124 [2021-12-06 17:18:04,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:18:04,314 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 411 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:18:04,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [411 Valid, 724 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:18:04,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3124 states. [2021-12-06 17:18:04,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3124 to 2356. [2021-12-06 17:18:04,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2356 states, 2355 states have (on average 1.6148619957537156) internal successors, (3803), 2355 states have internal predecessors, (3803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:18:04,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2356 states to 2356 states and 3803 transitions. [2021-12-06 17:18:04,391 INFO L78 Accepts]: Start accepts. Automaton has 2356 states and 3803 transitions. Word has length 74 [2021-12-06 17:18:04,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:18:04,391 INFO L470 AbstractCegarLoop]: Abstraction has 2356 states and 3803 transitions. [2021-12-06 17:18:04,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 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) [2021-12-06 17:18:04,392 INFO L276 IsEmpty]: Start isEmpty. Operand 2356 states and 3803 transitions. [2021-12-06 17:18:04,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-06 17:18:04,393 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:18:04,393 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:18:04,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 17:18:04,393 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:18:04,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:18:04,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1364954579, now seen corresponding path program 1 times [2021-12-06 17:18:04,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:18:04,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908556439] [2021-12-06 17:18:04,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:18:04,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:18:04,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:18:04,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:18:04,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:18:04,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908556439] [2021-12-06 17:18:04,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908556439] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:18:04,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:18:04,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 17:18:04,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645448424] [2021-12-06 17:18:04,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:18:04,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:18:04,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:18:04,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:18:04,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 17:18:04,429 INFO L87 Difference]: Start difference. First operand 2356 states and 3803 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:18:04,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:18:04,558 INFO L93 Difference]: Finished difference Result 6796 states and 11038 transitions. [2021-12-06 17:18:04,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 17:18:04,559 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2021-12-06 17:18:04,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:18:04,578 INFO L225 Difference]: With dead ends: 6796 [2021-12-06 17:18:04,578 INFO L226 Difference]: Without dead ends: 4500 [2021-12-06 17:18:04,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:18:04,581 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 409 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:18:04,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [409 Valid, 733 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:18:04,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4500 states. [2021-12-06 17:18:04,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4500 to 3412. [2021-12-06 17:18:04,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3412 states, 3411 states have (on average 1.612723541483436) internal successors, (5501), 3411 states have internal predecessors, (5501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:18:04,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3412 states to 3412 states and 5501 transitions. [2021-12-06 17:18:04,692 INFO L78 Accepts]: Start accepts. Automaton has 3412 states and 5501 transitions. Word has length 75 [2021-12-06 17:18:04,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:18:04,693 INFO L470 AbstractCegarLoop]: Abstraction has 3412 states and 5501 transitions. [2021-12-06 17:18:04,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:18:04,693 INFO L276 IsEmpty]: Start isEmpty. Operand 3412 states and 5501 transitions. [2021-12-06 17:18:04,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-06 17:18:04,694 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:18:04,694 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:18:04,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 17:18:04,695 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:18:04,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:18:04,695 INFO L85 PathProgramCache]: Analyzing trace with hash 915332421, now seen corresponding path program 1 times [2021-12-06 17:18:04,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:18:04,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810069290] [2021-12-06 17:18:04,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:18:04,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:18:04,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:18:04,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:18:04,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:18:04,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810069290] [2021-12-06 17:18:04,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810069290] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:18:04,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:18:04,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:18:04,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885932546] [2021-12-06 17:18:04,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:18:04,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:18:04,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:18:04,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:18:04,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:18:04,724 INFO L87 Difference]: Start difference. First operand 3412 states and 5501 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 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) [2021-12-06 17:18:04,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:18:04,837 INFO L93 Difference]: Finished difference Result 7762 states and 12522 transitions. [2021-12-06 17:18:04,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:18:04,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 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 76 [2021-12-06 17:18:04,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:18:04,861 INFO L225 Difference]: With dead ends: 7762 [2021-12-06 17:18:04,862 INFO L226 Difference]: Without dead ends: 5340 [2021-12-06 17:18:04,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:18:04,865 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 110 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:18:04,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 443 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:18:04,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5340 states. [2021-12-06 17:18:05,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5340 to 5338. [2021-12-06 17:18:05,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5338 states, 5337 states have (on average 1.6001498969458496) internal successors, (8540), 5337 states have internal predecessors, (8540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:18:05,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5338 states to 5338 states and 8540 transitions. [2021-12-06 17:18:05,045 INFO L78 Accepts]: Start accepts. Automaton has 5338 states and 8540 transitions. Word has length 76 [2021-12-06 17:18:05,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:18:05,045 INFO L470 AbstractCegarLoop]: Abstraction has 5338 states and 8540 transitions. [2021-12-06 17:18:05,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 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) [2021-12-06 17:18:05,046 INFO L276 IsEmpty]: Start isEmpty. Operand 5338 states and 8540 transitions. [2021-12-06 17:18:05,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-06 17:18:05,046 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:18:05,047 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:18:05,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 17:18:05,047 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:18:05,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:18:05,047 INFO L85 PathProgramCache]: Analyzing trace with hash -318395451, now seen corresponding path program 1 times [2021-12-06 17:18:05,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:18:05,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770089499] [2021-12-06 17:18:05,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:18:05,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:18:05,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:18:05,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:18:05,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:18:05,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770089499] [2021-12-06 17:18:05,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770089499] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:18:05,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:18:05,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:18:05,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136614648] [2021-12-06 17:18:05,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:18:05,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:18:05,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:18:05,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:18:05,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:18:05,077 INFO L87 Difference]: Start difference. First operand 5338 states and 8540 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 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) [2021-12-06 17:18:05,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:18:05,293 INFO L93 Difference]: Finished difference Result 11658 states and 18702 transitions. [2021-12-06 17:18:05,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:18:05,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 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 76 [2021-12-06 17:18:05,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:18:05,329 INFO L225 Difference]: With dead ends: 11658 [2021-12-06 17:18:05,330 INFO L226 Difference]: Without dead ends: 7904 [2021-12-06 17:18:05,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:18:05,334 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 116 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:18:05,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 477 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:18:05,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7904 states. [2021-12-06 17:18:05,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7904 to 7902. [2021-12-06 17:18:05,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7902 states, 7901 states have (on average 1.5919503860270852) internal successors, (12578), 7901 states have internal predecessors, (12578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:18:05,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7902 states to 7902 states and 12578 transitions. [2021-12-06 17:18:05,593 INFO L78 Accepts]: Start accepts. Automaton has 7902 states and 12578 transitions. Word has length 76 [2021-12-06 17:18:05,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:18:05,594 INFO L470 AbstractCegarLoop]: Abstraction has 7902 states and 12578 transitions. [2021-12-06 17:18:05,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 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) [2021-12-06 17:18:05,594 INFO L276 IsEmpty]: Start isEmpty. Operand 7902 states and 12578 transitions. [2021-12-06 17:18:05,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-06 17:18:05,610 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:18:05,610 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:18:05,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 17:18:05,610 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:18:05,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:18:05,611 INFO L85 PathProgramCache]: Analyzing trace with hash -116701437, now seen corresponding path program 1 times [2021-12-06 17:18:05,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:18:05,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104969830] [2021-12-06 17:18:05,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:18:05,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:18:05,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:18:05,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:18:05,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:18:05,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104969830] [2021-12-06 17:18:05,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104969830] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:18:05,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:18:05,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:18:05,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615745348] [2021-12-06 17:18:05,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:18:05,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:18:05,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:18:05,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:18:05,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:18:05,639 INFO L87 Difference]: Start difference. First operand 7902 states and 12578 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 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) [2021-12-06 17:18:05,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:18:05,888 INFO L93 Difference]: Finished difference Result 17511 states and 28108 transitions. [2021-12-06 17:18:05,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:18:05,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 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 76 [2021-12-06 17:18:05,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:18:05,909 INFO L225 Difference]: With dead ends: 17511 [2021-12-06 17:18:05,910 INFO L226 Difference]: Without dead ends: 11763 [2021-12-06 17:18:05,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:18:05,917 INFO L933 BasicCegarLoop]: 315 mSDtfsCounter, 122 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:18:05,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 503 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:18:05,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11763 states. [2021-12-06 17:18:06,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11763 to 11761. [2021-12-06 17:18:06,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11761 states, 11760 states have (on average 1.5872448979591838) internal successors, (18666), 11760 states have internal predecessors, (18666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:18:06,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11761 states to 11761 states and 18666 transitions. [2021-12-06 17:18:06,236 INFO L78 Accepts]: Start accepts. Automaton has 11761 states and 18666 transitions. Word has length 76 [2021-12-06 17:18:06,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:18:06,236 INFO L470 AbstractCegarLoop]: Abstraction has 11761 states and 18666 transitions. [2021-12-06 17:18:06,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 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) [2021-12-06 17:18:06,237 INFO L276 IsEmpty]: Start isEmpty. Operand 11761 states and 18666 transitions. [2021-12-06 17:18:06,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-06 17:18:06,237 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:18:06,237 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:18:06,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 17:18:06,238 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:18:06,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:18:06,238 INFO L85 PathProgramCache]: Analyzing trace with hash 411123109, now seen corresponding path program 1 times [2021-12-06 17:18:06,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:18:06,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600916563] [2021-12-06 17:18:06,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:18:06,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:18:06,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:18:06,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:18:06,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:18:06,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600916563] [2021-12-06 17:18:06,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600916563] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:18:06,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:18:06,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:18:06,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926621608] [2021-12-06 17:18:06,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:18:06,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:18:06,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:18:06,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:18:06,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:18:06,322 INFO L87 Difference]: Start difference. First operand 11761 states and 18666 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:18:06,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:18:06,643 INFO L93 Difference]: Finished difference Result 23438 states and 37217 transitions. [2021-12-06 17:18:06,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:18:06,644 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 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 [2021-12-06 17:18:06,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:18:06,662 INFO L225 Difference]: With dead ends: 23438 [2021-12-06 17:18:06,662 INFO L226 Difference]: Without dead ends: 11763 [2021-12-06 17:18:06,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-06 17:18:06,674 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 301 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:18:06,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 592 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:18:06,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11763 states. [2021-12-06 17:18:06,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11763 to 11761. [2021-12-06 17:18:06,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11761 states, 11760 states have (on average 1.5766156462585035) internal successors, (18541), 11760 states have internal predecessors, (18541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:18:06,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11761 states to 11761 states and 18541 transitions. [2021-12-06 17:18:06,952 INFO L78 Accepts]: Start accepts. Automaton has 11761 states and 18541 transitions. Word has length 77 [2021-12-06 17:18:06,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:18:06,952 INFO L470 AbstractCegarLoop]: Abstraction has 11761 states and 18541 transitions. [2021-12-06 17:18:06,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:18:06,952 INFO L276 IsEmpty]: Start isEmpty. Operand 11761 states and 18541 transitions. [2021-12-06 17:18:06,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-12-06 17:18:06,953 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:18:06,953 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:18:06,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 17:18:06,953 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:18:06,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:18:06,954 INFO L85 PathProgramCache]: Analyzing trace with hash 224831213, now seen corresponding path program 1 times [2021-12-06 17:18:06,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:18:06,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785199448] [2021-12-06 17:18:06,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:18:06,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:18:06,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:18:07,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:18:07,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:18:07,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785199448] [2021-12-06 17:18:07,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785199448] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:18:07,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:18:07,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:18:07,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510340031] [2021-12-06 17:18:07,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:18:07,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:18:07,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:18:07,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:18:07,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:18:07,024 INFO L87 Difference]: Start difference. First operand 11761 states and 18541 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 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) [2021-12-06 17:18:07,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:18:07,440 INFO L93 Difference]: Finished difference Result 33682 states and 53251 transitions. [2021-12-06 17:18:07,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:18:07,441 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 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 [2021-12-06 17:18:07,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:18:07,492 INFO L225 Difference]: With dead ends: 33682 [2021-12-06 17:18:07,492 INFO L226 Difference]: Without dead ends: 22007 [2021-12-06 17:18:07,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-06 17:18:07,506 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 187 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:18:07,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 786 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:18:07,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22007 states. [2021-12-06 17:18:08,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22007 to 22005. [2021-12-06 17:18:08,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22005 states, 22004 states have (on average 1.5649881839665516) internal successors, (34436), 22004 states have internal predecessors, (34436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:18:08,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22005 states to 22005 states and 34436 transitions. [2021-12-06 17:18:08,076 INFO L78 Accepts]: Start accepts. Automaton has 22005 states and 34436 transitions. Word has length 80 [2021-12-06 17:18:08,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:18:08,076 INFO L470 AbstractCegarLoop]: Abstraction has 22005 states and 34436 transitions. [2021-12-06 17:18:08,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 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) [2021-12-06 17:18:08,076 INFO L276 IsEmpty]: Start isEmpty. Operand 22005 states and 34436 transitions. [2021-12-06 17:18:08,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-12-06 17:18:08,077 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:18:08,077 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:18:08,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 17:18:08,077 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:18:08,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:18:08,077 INFO L85 PathProgramCache]: Analyzing trace with hash -2048742578, now seen corresponding path program 1 times [2021-12-06 17:18:08,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:18:08,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925374362] [2021-12-06 17:18:08,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:18:08,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:18:08,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:18:08,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:18:08,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:18:08,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925374362] [2021-12-06 17:18:08,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925374362] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:18:08,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:18:08,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:18:08,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42512472] [2021-12-06 17:18:08,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:18:08,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:18:08,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:18:08,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:18:08,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:18:08,139 INFO L87 Difference]: Start difference. First operand 22005 states and 34436 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:18:08,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:18:08,876 INFO L93 Difference]: Finished difference Result 42912 states and 66453 transitions. [2021-12-06 17:18:08,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:18:08,877 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2021-12-06 17:18:08,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:18:08,940 INFO L225 Difference]: With dead ends: 42912 [2021-12-06 17:18:08,940 INFO L226 Difference]: Without dead ends: 42910 [2021-12-06 17:18:08,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:18:08,948 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 368 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:18:08,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [368 Valid, 950 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:18:08,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42910 states. [2021-12-06 17:18:09,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42910 to 23091. [2021-12-06 17:18:09,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23091 states, 23090 states have (on average 1.5380251190991772) internal successors, (35513), 23090 states have internal predecessors, (35513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:18:09,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23091 states to 23091 states and 35513 transitions. [2021-12-06 17:18:09,553 INFO L78 Accepts]: Start accepts. Automaton has 23091 states and 35513 transitions. Word has length 81 [2021-12-06 17:18:09,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:18:09,553 INFO L470 AbstractCegarLoop]: Abstraction has 23091 states and 35513 transitions. [2021-12-06 17:18:09,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:18:09,554 INFO L276 IsEmpty]: Start isEmpty. Operand 23091 states and 35513 transitions. [2021-12-06 17:18:09,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-06 17:18:09,555 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:18:09,555 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:18:09,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 17:18:09,556 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:18:09,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:18:09,556 INFO L85 PathProgramCache]: Analyzing trace with hash -601727771, now seen corresponding path program 1 times [2021-12-06 17:18:09,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:18:09,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246985077] [2021-12-06 17:18:09,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:18:09,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:18:09,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:18:09,603 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-06 17:18:09,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:18:09,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246985077] [2021-12-06 17:18:09,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246985077] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:18:09,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:18:09,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:18:09,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365764561] [2021-12-06 17:18:09,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:18:09,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:18:09,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:18:09,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:18:09,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:18:09,605 INFO L87 Difference]: Start difference. First operand 23091 states and 35513 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:18:10,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:18:10,604 INFO L93 Difference]: Finished difference Result 56431 states and 87041 transitions. [2021-12-06 17:18:10,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:18:10,605 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-12-06 17:18:10,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:18:10,660 INFO L225 Difference]: With dead ends: 56431 [2021-12-06 17:18:10,660 INFO L226 Difference]: Without dead ends: 45489 [2021-12-06 17:18:10,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:18:10,678 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 522 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:18:10,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [522 Valid, 991 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:18:10,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45489 states. [2021-12-06 17:18:11,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45489 to 35483. [2021-12-06 17:18:11,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35483 states, 35482 states have (on average 1.536525562256919) internal successors, (54519), 35482 states have internal predecessors, (54519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:18:11,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35483 states to 35483 states and 54519 transitions. [2021-12-06 17:18:11,654 INFO L78 Accepts]: Start accepts. Automaton has 35483 states and 54519 transitions. Word has length 109 [2021-12-06 17:18:11,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:18:11,654 INFO L470 AbstractCegarLoop]: Abstraction has 35483 states and 54519 transitions. [2021-12-06 17:18:11,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:18:11,654 INFO L276 IsEmpty]: Start isEmpty. Operand 35483 states and 54519 transitions. [2021-12-06 17:18:11,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-06 17:18:11,656 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:18:11,656 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:18:11,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 17:18:11,656 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:18:11,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:18:11,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1835455643, now seen corresponding path program 1 times [2021-12-06 17:18:11,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:18:11,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856927275] [2021-12-06 17:18:11,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:18:11,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:18:11,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:18:11,701 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 17:18:11,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:18:11,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856927275] [2021-12-06 17:18:11,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856927275] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:18:11,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:18:11,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:18:11,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483965434] [2021-12-06 17:18:11,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:18:11,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:18:11,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:18:11,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:18:11,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:18:11,702 INFO L87 Difference]: Start difference. First operand 35483 states and 54519 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:18:12,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:18:12,655 INFO L93 Difference]: Finished difference Result 60807 states and 93801 transitions. [2021-12-06 17:18:12,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:18:12,656 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-12-06 17:18:12,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:18:12,709 INFO L225 Difference]: With dead ends: 60807 [2021-12-06 17:18:12,709 INFO L226 Difference]: Without dead ends: 49865 [2021-12-06 17:18:12,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:18:12,727 INFO L933 BasicCegarLoop]: 353 mSDtfsCounter, 522 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:18:12,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [522 Valid, 987 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:18:12,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49865 states. [2021-12-06 17:18:13,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49865 to 48067. [2021-12-06 17:18:13,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48067 states, 48066 states have (on average 1.5370324137644074) internal successors, (73879), 48066 states have internal predecessors, (73879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:18:13,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48067 states to 48067 states and 73879 transitions. [2021-12-06 17:18:13,869 INFO L78 Accepts]: Start accepts. Automaton has 48067 states and 73879 transitions. Word has length 109 [2021-12-06 17:18:13,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:18:13,869 INFO L470 AbstractCegarLoop]: Abstraction has 48067 states and 73879 transitions. [2021-12-06 17:18:13,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:18:13,869 INFO L276 IsEmpty]: Start isEmpty. Operand 48067 states and 73879 transitions. [2021-12-06 17:18:13,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-06 17:18:13,870 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:18:13,871 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:18:13,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 17:18:13,871 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:18:13,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:18:13,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1633761629, now seen corresponding path program 1 times [2021-12-06 17:18:13,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:18:13,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317142290] [2021-12-06 17:18:13,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:18:13,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:18:13,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:18:13,904 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 17:18:13,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:18:13,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317142290] [2021-12-06 17:18:13,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317142290] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:18:13,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:18:13,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:18:13,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839094788] [2021-12-06 17:18:13,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:18:13,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:18:13,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:18:13,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:18:13,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:18:13,905 INFO L87 Difference]: Start difference. First operand 48067 states and 73879 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:18:15,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:18:15,735 INFO L93 Difference]: Finished difference Result 100238 states and 154694 transitions. [2021-12-06 17:18:15,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:18:15,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-12-06 17:18:15,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:18:15,847 INFO L225 Difference]: With dead ends: 100238 [2021-12-06 17:18:15,847 INFO L226 Difference]: Without dead ends: 89036 [2021-12-06 17:18:15,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:18:15,873 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 99 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:18:15,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 405 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:18:15,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89036 states. [2021-12-06 17:18:18,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89036 to 88919. [2021-12-06 17:18:18,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88919 states, 88918 states have (on average 1.5396994984142693) internal successors, (136907), 88918 states have internal predecessors, (136907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:18:18,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88919 states to 88919 states and 136907 transitions. [2021-12-06 17:18:18,322 INFO L78 Accepts]: Start accepts. Automaton has 88919 states and 136907 transitions. Word has length 109 [2021-12-06 17:18:18,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:18:18,323 INFO L470 AbstractCegarLoop]: Abstraction has 88919 states and 136907 transitions. [2021-12-06 17:18:18,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:18:18,323 INFO L276 IsEmpty]: Start isEmpty. Operand 88919 states and 136907 transitions. [2021-12-06 17:18:18,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-06 17:18:18,324 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:18:18,325 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:18:18,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 17:18:18,325 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:18:18,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:18:18,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1592792316, now seen corresponding path program 1 times [2021-12-06 17:18:18,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:18:18,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261139683] [2021-12-06 17:18:18,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:18:18,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:18:18,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:18:18,357 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:18:18,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:18:18,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261139683] [2021-12-06 17:18:18,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261139683] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:18:18,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:18:18,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:18:18,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773539560] [2021-12-06 17:18:18,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:18:18,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:18:18,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:18:18,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:18:18,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:18:18,358 INFO L87 Difference]: Start difference. First operand 88919 states and 136907 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:18:21,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:18:21,891 INFO L93 Difference]: Finished difference Result 263175 states and 404531 transitions. [2021-12-06 17:18:21,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:18:21,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-12-06 17:18:21,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:18:22,102 INFO L225 Difference]: With dead ends: 263175 [2021-12-06 17:18:22,103 INFO L226 Difference]: Without dead ends: 174332 [2021-12-06 17:18:22,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:18:22,139 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 147 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:18:22,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 494 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:18:22,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174332 states. [2021-12-06 17:18:26,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174332 to 174330. [2021-12-06 17:18:27,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174330 states, 174329 states have (on average 1.5262692954126966) internal successors, (266073), 174329 states have internal predecessors, (266073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:18:27,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174330 states to 174330 states and 266073 transitions. [2021-12-06 17:18:27,466 INFO L78 Accepts]: Start accepts. Automaton has 174330 states and 266073 transitions. Word has length 110 [2021-12-06 17:18:27,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:18:27,467 INFO L470 AbstractCegarLoop]: Abstraction has 174330 states and 266073 transitions. [2021-12-06 17:18:27,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:18:27,467 INFO L276 IsEmpty]: Start isEmpty. Operand 174330 states and 266073 transitions. [2021-12-06 17:18:27,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-06 17:18:27,469 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:18:27,469 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:18:27,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 17:18:27,469 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:18:27,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:18:27,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1452537340, now seen corresponding path program 1 times [2021-12-06 17:18:27,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:18:27,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131820948] [2021-12-06 17:18:27,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:18:27,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:18:27,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:18:27,506 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 17:18:27,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:18:27,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131820948] [2021-12-06 17:18:27,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131820948] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:18:27,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:18:27,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 17:18:27,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979933607] [2021-12-06 17:18:27,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:18:27,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:18:27,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:18:27,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:18:27,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 17:18:27,507 INFO L87 Difference]: Start difference. First operand 174330 states and 266073 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:18:31,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:18:31,287 INFO L93 Difference]: Finished difference Result 282522 states and 432644 transitions. [2021-12-06 17:18:31,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 17:18:31,288 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-12-06 17:18:31,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:18:31,590 INFO L225 Difference]: With dead ends: 282522 [2021-12-06 17:18:31,590 INFO L226 Difference]: Without dead ends: 181778 [2021-12-06 17:18:31,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 17:18:31,637 INFO L933 BasicCegarLoop]: 348 mSDtfsCounter, 226 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:18:31,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 683 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:18:31,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181778 states. [2021-12-06 17:18:35,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181778 to 121712. [2021-12-06 17:18:35,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121712 states, 121711 states have (on average 1.521793428695845) internal successors, (185219), 121711 states have internal predecessors, (185219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:18:35,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121712 states to 121712 states and 185219 transitions. [2021-12-06 17:18:35,445 INFO L78 Accepts]: Start accepts. Automaton has 121712 states and 185219 transitions. Word has length 110 [2021-12-06 17:18:35,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:18:35,446 INFO L470 AbstractCegarLoop]: Abstraction has 121712 states and 185219 transitions. [2021-12-06 17:18:35,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:18:35,446 INFO L276 IsEmpty]: Start isEmpty. Operand 121712 states and 185219 transitions. [2021-12-06 17:18:35,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-06 17:18:35,449 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:18:35,449 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:18:35,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 17:18:35,449 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:18:35,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:18:35,450 INFO L85 PathProgramCache]: Analyzing trace with hash 732453534, now seen corresponding path program 1 times [2021-12-06 17:18:35,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:18:35,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027706018] [2021-12-06 17:18:35,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:18:35,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:18:35,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:18:35,483 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:18:35,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:18:35,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027706018] [2021-12-06 17:18:35,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027706018] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:18:35,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:18:35,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:18:35,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033011225] [2021-12-06 17:18:35,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:18:35,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:18:35,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:18:35,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:18:35,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:18:35,484 INFO L87 Difference]: Start difference. First operand 121712 states and 185219 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:18:41,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:18:41,254 INFO L93 Difference]: Finished difference Result 360127 states and 547037 transitions. [2021-12-06 17:18:41,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:18:41,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-12-06 17:18:41,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:18:41,594 INFO L225 Difference]: With dead ends: 360127 [2021-12-06 17:18:41,594 INFO L226 Difference]: Without dead ends: 238563 [2021-12-06 17:18:41,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:18:41,660 INFO L933 BasicCegarLoop]: 315 mSDtfsCounter, 166 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:18:41,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 527 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:18:41,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238563 states. [2021-12-06 17:18:48,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238563 to 238561. [2021-12-06 17:18:48,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238561 states, 238560 states have (on average 1.507943494299128) internal successors, (359735), 238560 states have internal predecessors, (359735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:18:48,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238561 states to 238561 states and 359735 transitions. [2021-12-06 17:18:48,853 INFO L78 Accepts]: Start accepts. Automaton has 238561 states and 359735 transitions. Word has length 110 [2021-12-06 17:18:48,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:18:48,853 INFO L470 AbstractCegarLoop]: Abstraction has 238561 states and 359735 transitions. [2021-12-06 17:18:48,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:18:48,854 INFO L276 IsEmpty]: Start isEmpty. Operand 238561 states and 359735 transitions. [2021-12-06 17:18:48,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-06 17:18:48,858 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:18:48,858 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:18:48,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-06 17:18:48,858 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:18:48,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:18:48,859 INFO L85 PathProgramCache]: Analyzing trace with hash 126590076, now seen corresponding path program 1 times [2021-12-06 17:18:48,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:18:48,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8971329] [2021-12-06 17:18:48,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:18:48,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:18:48,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:18:48,897 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 17:18:48,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:18:48,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8971329] [2021-12-06 17:18:48,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8971329] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:18:48,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:18:48,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 17:18:48,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321624007] [2021-12-06 17:18:48,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:18:48,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:18:48,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:18:48,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:18:48,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 17:18:48,899 INFO L87 Difference]: Start difference. First operand 238561 states and 359735 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:18:56,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:18:56,796 INFO L93 Difference]: Finished difference Result 423895 states and 643018 transitions. [2021-12-06 17:18:56,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 17:18:56,796 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2021-12-06 17:18:56,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:18:57,321 INFO L225 Difference]: With dead ends: 423895 [2021-12-06 17:18:57,321 INFO L226 Difference]: Without dead ends: 330381 [2021-12-06 17:18:57,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 17:18:57,424 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 232 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:18:57,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 683 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:18:57,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330381 states. [2021-12-06 17:19:06,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330381 to 295993. [2021-12-06 17:19:06,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295993 states, 295992 states have (on average 1.5073346576934512) internal successors, (446159), 295992 states have internal predecessors, (446159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:19:07,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295993 states to 295993 states and 446159 transitions. [2021-12-06 17:19:07,074 INFO L78 Accepts]: Start accepts. Automaton has 295993 states and 446159 transitions. Word has length 111 [2021-12-06 17:19:07,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:19:07,074 INFO L470 AbstractCegarLoop]: Abstraction has 295993 states and 446159 transitions. [2021-12-06 17:19:07,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:19:07,075 INFO L276 IsEmpty]: Start isEmpty. Operand 295993 states and 446159 transitions. [2021-12-06 17:19:07,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-06 17:19:07,079 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:19:07,079 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:19:07,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-06 17:19:07,079 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:19:07,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:19:07,080 INFO L85 PathProgramCache]: Analyzing trace with hash -894478278, now seen corresponding path program 1 times [2021-12-06 17:19:07,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:19:07,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709569827] [2021-12-06 17:19:07,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:19:07,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:19:07,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:19:07,112 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 17:19:07,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:19:07,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709569827] [2021-12-06 17:19:07,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709569827] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:19:07,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:19:07,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:19:07,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627589108] [2021-12-06 17:19:07,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:19:07,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:19:07,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:19:07,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:19:07,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:19:07,114 INFO L87 Difference]: Start difference. First operand 295993 states and 446159 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:19:19,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:19:19,706 INFO L93 Difference]: Finished difference Result 649371 states and 981625 transitions. [2021-12-06 17:19:19,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:19:19,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2021-12-06 17:19:19,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:19:20,560 INFO L225 Difference]: With dead ends: 649371 [2021-12-06 17:19:20,560 INFO L226 Difference]: Without dead ends: 517629 [2021-12-06 17:19:20,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:19:20,695 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 99 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:19:20,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 400 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:19:21,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517629 states. [2021-12-06 17:19:36,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517629 to 516411. [2021-12-06 17:19:36,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516411 states, 516410 states have (on average 1.5067310857651866) internal successors, (778091), 516410 states have internal predecessors, (778091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:19:37,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516411 states to 516411 states and 778091 transitions. [2021-12-06 17:19:37,585 INFO L78 Accepts]: Start accepts. Automaton has 516411 states and 778091 transitions. Word has length 111 [2021-12-06 17:19:37,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:19:37,585 INFO L470 AbstractCegarLoop]: Abstraction has 516411 states and 778091 transitions. [2021-12-06 17:19:37,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:19:37,586 INFO L276 IsEmpty]: Start isEmpty. Operand 516411 states and 778091 transitions. [2021-12-06 17:19:37,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-06 17:19:37,592 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:19:37,592 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:19:37,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-06 17:19:37,592 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:19:37,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:19:37,592 INFO L85 PathProgramCache]: Analyzing trace with hash -823560574, now seen corresponding path program 1 times [2021-12-06 17:19:37,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:19:37,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715166106] [2021-12-06 17:19:37,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:19:37,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:19:37,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:19:37,625 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 17:19:37,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:19:37,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715166106] [2021-12-06 17:19:37,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715166106] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:19:37,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:19:37,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:19:37,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887811723] [2021-12-06 17:19:37,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:19:37,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:19:37,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:19:37,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:19:37,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:19:37,627 INFO L87 Difference]: Start difference. First operand 516411 states and 778091 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:19:57,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:19:57,698 INFO L93 Difference]: Finished difference Result 1266073 states and 1915827 transitions. [2021-12-06 17:19:57,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:19:57,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2021-12-06 17:19:57,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:19:58,929 INFO L225 Difference]: With dead ends: 1266073 [2021-12-06 17:19:58,929 INFO L226 Difference]: Without dead ends: 749945 [2021-12-06 17:19:59,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:19:59,174 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 118 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:19:59,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 425 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:19:59,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749945 states. [2021-12-06 17:20:22,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749945 to 720963. [2021-12-06 17:20:22,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720963 states, 720962 states have (on average 1.4980498278688752) internal successors, (1080037), 720962 states have internal predecessors, (1080037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:20:24,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720963 states to 720963 states and 1080037 transitions. [2021-12-06 17:20:24,286 INFO L78 Accepts]: Start accepts. Automaton has 720963 states and 1080037 transitions. Word has length 111 [2021-12-06 17:20:24,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:20:24,287 INFO L470 AbstractCegarLoop]: Abstraction has 720963 states and 1080037 transitions. [2021-12-06 17:20:24,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:20:24,287 INFO L276 IsEmpty]: Start isEmpty. Operand 720963 states and 1080037 transitions. [2021-12-06 17:20:24,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-06 17:20:24,292 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:20:24,292 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:20:24,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-06 17:20:24,292 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:20:24,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:20:24,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1797016184, now seen corresponding path program 1 times [2021-12-06 17:20:24,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:20:24,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457669486] [2021-12-06 17:20:24,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:20:24,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:20:24,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:24,324 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 17:20:24,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:20:24,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457669486] [2021-12-06 17:20:24,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457669486] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:20:24,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:20:24,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:20:24,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431544915] [2021-12-06 17:20:24,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:20:24,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:20:24,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:20:24,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:20:24,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:20:24,326 INFO L87 Difference]: Start difference. First operand 720963 states and 1080037 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:20:54,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:20:54,284 INFO L93 Difference]: Finished difference Result 1798833 states and 2707103 transitions. [2021-12-06 17:20:54,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:20:54,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2021-12-06 17:20:54,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:20:56,247 INFO L225 Difference]: With dead ends: 1798833 [2021-12-06 17:20:56,247 INFO L226 Difference]: Without dead ends: 1078133 [2021-12-06 17:20:56,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:20:56,592 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 124 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:20:56,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 428 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:20:57,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078133 states. [2021-12-06 17:21:29,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078133 to 1032939. [2021-12-06 17:21:30,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1032939 states, 1032938 states have (on average 1.4897380094449038) internal successors, (1538807), 1032938 states have internal predecessors, (1538807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:21:32,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032939 states to 1032939 states and 1538807 transitions. [2021-12-06 17:21:32,858 INFO L78 Accepts]: Start accepts. Automaton has 1032939 states and 1538807 transitions. Word has length 111 [2021-12-06 17:21:32,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:21:32,858 INFO L470 AbstractCegarLoop]: Abstraction has 1032939 states and 1538807 transitions. [2021-12-06 17:21:32,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:21:32,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1032939 states and 1538807 transitions. [2021-12-06 17:21:32,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-06 17:21:32,863 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:21:32,863 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:21:32,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-06 17:21:32,863 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:21:32,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:21:32,864 INFO L85 PathProgramCache]: Analyzing trace with hash -3615941, now seen corresponding path program 1 times [2021-12-06 17:21:32,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:21:32,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762439274] [2021-12-06 17:21:32,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:21:32,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:21:32,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:21:32,897 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-06 17:21:32,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:21:32,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762439274] [2021-12-06 17:21:32,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762439274] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:21:32,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:21:32,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 17:21:32,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086477441] [2021-12-06 17:21:32,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:21:32,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:21:32,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:21:32,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:21:32,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 17:21:32,899 INFO L87 Difference]: Start difference. First operand 1032939 states and 1538807 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:22:11,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:22:11,286 INFO L93 Difference]: Finished difference Result 1809037 states and 2711934 transitions. [2021-12-06 17:22:11,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 17:22:11,287 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-12-06 17:22:11,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:22:13,797 INFO L225 Difference]: With dead ends: 1809037 [2021-12-06 17:22:13,797 INFO L226 Difference]: Without dead ends: 1414715 [2021-12-06 17:22:14,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 17:22:14,107 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 234 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:22:14,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 744 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:22:15,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414715 states. [2021-12-06 17:22:56,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414715 to 1286383. [2021-12-06 17:22:57,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286383 states, 1286382 states have (on average 1.4889908285408222) internal successors, (1915411), 1286382 states have internal predecessors, (1915411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:23:00,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286383 states to 1286383 states and 1915411 transitions. [2021-12-06 17:23:00,276 INFO L78 Accepts]: Start accepts. Automaton has 1286383 states and 1915411 transitions. Word has length 112 [2021-12-06 17:23:00,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:23:00,276 INFO L470 AbstractCegarLoop]: Abstraction has 1286383 states and 1915411 transitions. [2021-12-06 17:23:00,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:23:00,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1286383 states and 1915411 transitions. [2021-12-06 17:23:00,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-06 17:23:00,281 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:23:00,281 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:23:00,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-06 17:23:00,281 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:23:00,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:23:00,281 INFO L85 PathProgramCache]: Analyzing trace with hash 697448637, now seen corresponding path program 1 times [2021-12-06 17:23:00,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:23:00,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047452091] [2021-12-06 17:23:00,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:23:00,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:23:00,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:23:00,309 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-06 17:23:00,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:23:00,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047452091] [2021-12-06 17:23:00,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047452091] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:23:00,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:23:00,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:23:00,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568780894] [2021-12-06 17:23:00,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:23:00,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:23:00,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:23:00,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:23:00,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:23:00,310 INFO L87 Difference]: Start difference. First operand 1286383 states and 1915411 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:24:04,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:24:04,865 INFO L93 Difference]: Finished difference Result 2855825 states and 4265719 transitions. [2021-12-06 17:24:04,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:24:04,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-12-06 17:24:04,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:24:09,179 INFO L225 Difference]: With dead ends: 2855825 [2021-12-06 17:24:09,180 INFO L226 Difference]: Without dead ends: 2255451 [2021-12-06 17:24:10,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:24:10,004 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 99 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:24:10,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 400 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:24:11,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2255451 states. [2021-12-06 17:25:25,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2255451 to 2251625. [2021-12-06 17:25:26,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2251625 states, 2251624 states have (on average 1.4894196366711316) internal successors, (3353613), 2251624 states have internal predecessors, (3353613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:25:33,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2251625 states to 2251625 states and 3353613 transitions. [2021-12-06 17:25:33,220 INFO L78 Accepts]: Start accepts. Automaton has 2251625 states and 3353613 transitions. Word has length 112 [2021-12-06 17:25:33,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:25:33,220 INFO L470 AbstractCegarLoop]: Abstraction has 2251625 states and 3353613 transitions. [2021-12-06 17:25:33,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:25:33,220 INFO L276 IsEmpty]: Start isEmpty. Operand 2251625 states and 3353613 transitions. [2021-12-06 17:25:33,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-06 17:25:33,225 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:25:33,225 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:25:33,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-06 17:25:33,226 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:25:33,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:25:33,226 INFO L85 PathProgramCache]: Analyzing trace with hash 391518859, now seen corresponding path program 1 times [2021-12-06 17:25:33,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:25:33,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470133269] [2021-12-06 17:25:33,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:25:33,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:25:33,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:33,252 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 17:25:33,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:25:33,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470133269] [2021-12-06 17:25:33,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470133269] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:25:33,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:25:33,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:25:33,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560711093] [2021-12-06 17:25:33,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:25:33,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:25:33,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:25:33,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:25:33,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:25:33,254 INFO L87 Difference]: Start difference. First operand 2251625 states and 3353613 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)