./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.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_718fe473-3634-4357-b644-7a6e515f14d5/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718fe473-3634-4357-b644-7a6e515f14d5/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_718fe473-3634-4357-b644-7a6e515f14d5/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718fe473-3634-4357-b644-7a6e515f14d5/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718fe473-3634-4357-b644-7a6e515f14d5/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_718fe473-3634-4357-b644-7a6e515f14d5/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 64affc32c9ee6b1616cdbc82208fa978b35ea8d8fb3017d6636bda9ef421e017 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 00:21:12,862 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 00:21:12,864 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 00:21:12,895 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 00:21:12,896 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 00:21:12,897 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 00:21:12,899 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 00:21:12,902 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 00:21:12,904 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 00:21:12,905 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 00:21:12,906 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 00:21:12,908 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 00:21:12,908 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 00:21:12,909 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 00:21:12,911 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 00:21:12,913 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 00:21:12,914 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 00:21:12,915 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 00:21:12,917 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 00:21:12,919 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 00:21:12,921 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 00:21:12,923 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 00:21:12,924 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 00:21:12,925 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 00:21:12,929 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 00:21:12,929 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 00:21:12,930 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 00:21:12,931 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 00:21:12,931 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 00:21:12,932 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 00:21:12,933 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 00:21:12,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 00:21:12,934 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 00:21:12,935 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 00:21:12,936 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 00:21:12,937 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 00:21:12,937 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 00:21:12,937 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 00:21:12,938 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 00:21:12,939 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 00:21:12,939 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 00:21:12,940 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718fe473-3634-4357-b644-7a6e515f14d5/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-07 00:21:12,964 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 00:21:12,965 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 00:21:12,965 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 00:21:12,965 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 00:21:12,966 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 00:21:12,966 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 00:21:12,966 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 00:21:12,967 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 00:21:12,967 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 00:21:12,967 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 00:21:12,967 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 00:21:12,967 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 00:21:12,967 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 00:21:12,968 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 00:21:12,968 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 00:21:12,968 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 00:21:12,968 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 00:21:12,968 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 00:21:12,968 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 00:21:12,969 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 00:21:12,969 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 00:21:12,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 00:21:12,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 00:21:12,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 00:21:12,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:21:12,969 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 00:21:12,974 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 00:21:12,974 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 00:21:12,974 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 00:21:12,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 00:21:12,975 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 00:21:12,975 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 00:21:12,975 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 00:21:12,975 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 00:21:12,975 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_718fe473-3634-4357-b644-7a6e515f14d5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718fe473-3634-4357-b644-7a6e515f14d5/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 64affc32c9ee6b1616cdbc82208fa978b35ea8d8fb3017d6636bda9ef421e017 [2021-12-07 00:21:13,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 00:21:13,173 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 00:21:13,175 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 00:21:13,176 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 00:21:13,176 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 00:21:13,177 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718fe473-3634-4357-b644-7a6e515f14d5/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c [2021-12-07 00:21:13,224 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718fe473-3634-4357-b644-7a6e515f14d5/bin/uautomizer-DrprNOufMa/data/ff0ab6389/7beb580990524b289454f5e4451f7ce5/FLAG474dd6872 [2021-12-07 00:21:13,728 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 00:21:13,728 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718fe473-3634-4357-b644-7a6e515f14d5/sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c [2021-12-07 00:21:13,743 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718fe473-3634-4357-b644-7a6e515f14d5/bin/uautomizer-DrprNOufMa/data/ff0ab6389/7beb580990524b289454f5e4451f7ce5/FLAG474dd6872 [2021-12-07 00:21:14,250 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718fe473-3634-4357-b644-7a6e515f14d5/bin/uautomizer-DrprNOufMa/data/ff0ab6389/7beb580990524b289454f5e4451f7ce5 [2021-12-07 00:21:14,252 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 00:21:14,253 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 00:21:14,253 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 00:21:14,254 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 00:21:14,256 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 00:21:14,256 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:21:14" (1/1) ... [2021-12-07 00:21:14,257 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ffe6efb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:21:14, skipping insertion in model container [2021-12-07 00:21:14,257 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:21:14" (1/1) ... [2021-12-07 00:21:14,262 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 00:21:14,300 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 00:21:14,539 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_718fe473-3634-4357-b644-7a6e515f14d5/sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c[75436,75449] [2021-12-07 00:21:14,546 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:21:14,556 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 00:21:14,663 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_718fe473-3634-4357-b644-7a6e515f14d5/sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c[75436,75449] [2021-12-07 00:21:14,666 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:21:14,682 INFO L208 MainTranslator]: Completed translation [2021-12-07 00:21:14,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:21:14 WrapperNode [2021-12-07 00:21:14,683 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 00:21:14,684 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 00:21:14,684 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 00:21:14,684 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 00:21:14,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:21:14" (1/1) ... [2021-12-07 00:21:14,711 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:21:14" (1/1) ... [2021-12-07 00:21:14,745 INFO L137 Inliner]: procedures = 31, calls = 223, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 798 [2021-12-07 00:21:14,745 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 00:21:14,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 00:21:14,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 00:21:14,746 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 00:21:14,752 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:21:14" (1/1) ... [2021-12-07 00:21:14,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:21:14" (1/1) ... [2021-12-07 00:21:14,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:21:14" (1/1) ... [2021-12-07 00:21:14,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:21:14" (1/1) ... [2021-12-07 00:21:14,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:21:14" (1/1) ... [2021-12-07 00:21:14,798 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:21:14" (1/1) ... [2021-12-07 00:21:14,801 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:21:14" (1/1) ... [2021-12-07 00:21:14,805 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 00:21:14,806 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 00:21:14,806 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 00:21:14,806 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 00:21:14,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:21:14" (1/1) ... [2021-12-07 00:21:14,812 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:21:14,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718fe473-3634-4357-b644-7a6e515f14d5/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:21:14,830 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718fe473-3634-4357-b644-7a6e515f14d5/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 00:21:14,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718fe473-3634-4357-b644-7a6e515f14d5/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 00:21:14,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 00:21:14,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-07 00:21:14,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-07 00:21:14,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-07 00:21:14,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-07 00:21:14,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 00:21:14,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-07 00:21:14,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 00:21:14,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 00:21:14,979 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 00:21:14,981 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 00:21:15,000 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-07 00:21:17,498 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-12-07 00:21:17,499 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-12-07 00:21:17,499 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 00:21:17,507 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 00:21:17,507 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-07 00:21:17,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:21:17 BoogieIcfgContainer [2021-12-07 00:21:17,509 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 00:21:17,511 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 00:21:17,511 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 00:21:17,514 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 00:21:17,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:21:14" (1/3) ... [2021-12-07 00:21:17,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4037996a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:21:17, skipping insertion in model container [2021-12-07 00:21:17,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:21:14" (2/3) ... [2021-12-07 00:21:17,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4037996a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:21:17, skipping insertion in model container [2021-12-07 00:21:17,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:21:17" (3/3) ... [2021-12-07 00:21:17,516 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.12.i.cil-2.c [2021-12-07 00:21:17,521 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 00:21:17,521 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-07 00:21:17,562 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 00:21:17,567 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 [2021-12-07 00:21:17,567 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-07 00:21:17,581 INFO L276 IsEmpty]: Start isEmpty. Operand has 153 states, 151 states have (on average 1.7218543046357615) internal successors, (260), 152 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:17,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-07 00:21:17,589 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:21:17,589 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] [2021-12-07 00:21:17,590 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:21:17,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:21:17,594 INFO L85 PathProgramCache]: Analyzing trace with hash 918515972, now seen corresponding path program 1 times [2021-12-07 00:21:17,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:21:17,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364345161] [2021-12-07 00:21:17,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:21:17,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:21:17,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:21:17,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:21:17,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:21:17,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364345161] [2021-12-07 00:21:17,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364345161] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:21:17,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:21:17,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:21:17,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721626083] [2021-12-07 00:21:17,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:21:17,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:21:17,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:21:18,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:21:18,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:21:18,013 INFO L87 Difference]: Start difference. First operand has 153 states, 151 states have (on average 1.7218543046357615) internal successors, (260), 152 states have internal predecessors, (260), 0 states have call successors, (0), 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 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:19,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:21:19,079 INFO L93 Difference]: Finished difference Result 431 states and 736 transitions. [2021-12-07 00:21:19,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:21:19,082 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2021-12-07 00:21:19,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:21:19,094 INFO L225 Difference]: With dead ends: 431 [2021-12-07 00:21:19,094 INFO L226 Difference]: Without dead ends: 263 [2021-12-07 00:21:19,098 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 [2021-12-07 00:21:19,101 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 164 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:21:19,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 459 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-07 00:21:19,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-12-07 00:21:19,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 180. [2021-12-07 00:21:19,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 1.6145251396648044) internal successors, (289), 179 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:19,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 289 transitions. [2021-12-07 00:21:19,142 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 289 transitions. Word has length 44 [2021-12-07 00:21:19,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:21:19,143 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 289 transitions. [2021-12-07 00:21:19,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:19,143 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 289 transitions. [2021-12-07 00:21:19,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-07 00:21:19,145 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:21:19,145 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] [2021-12-07 00:21:19,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-07 00:21:19,145 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:21:19,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:21:19,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1831970075, now seen corresponding path program 1 times [2021-12-07 00:21:19,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:21:19,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114415834] [2021-12-07 00:21:19,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:21:19,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:21:19,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:21:19,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:21:19,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:21:19,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114415834] [2021-12-07 00:21:19,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114415834] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:21:19,266 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:21:19,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:21:19,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131990267] [2021-12-07 00:21:19,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:21:19,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:21:19,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:21:19,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:21:19,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:21:19,268 INFO L87 Difference]: Start difference. First operand 180 states and 289 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:21,277 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:21:21,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:21:21,500 INFO L93 Difference]: Finished difference Result 378 states and 605 transitions. [2021-12-07 00:21:21,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:21:21,500 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2021-12-07 00:21:21,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:21:21,502 INFO L225 Difference]: With dead ends: 378 [2021-12-07 00:21:21,502 INFO L226 Difference]: Without dead ends: 208 [2021-12-07 00:21:21,503 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 [2021-12-07 00:21:21,504 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 22 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:21:21,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 487 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 150 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2021-12-07 00:21:21,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-12-07 00:21:21,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 191. [2021-12-07 00:21:21,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 1.6210526315789473) internal successors, (308), 190 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:21,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 308 transitions. [2021-12-07 00:21:21,515 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 308 transitions. Word has length 45 [2021-12-07 00:21:21,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:21:21,516 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 308 transitions. [2021-12-07 00:21:21,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:21,516 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 308 transitions. [2021-12-07 00:21:21,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-07 00:21:21,518 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:21:21,518 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:21:21,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-07 00:21:21,518 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:21:21,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:21:21,519 INFO L85 PathProgramCache]: Analyzing trace with hash 265450500, now seen corresponding path program 1 times [2021-12-07 00:21:21,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:21:21,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488556058] [2021-12-07 00:21:21,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:21:21,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:21:21,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:21:21,622 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:21:21,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:21:21,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488556058] [2021-12-07 00:21:21,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488556058] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:21:21,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:21:21,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:21:21,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821317362] [2021-12-07 00:21:21,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:21:21,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:21:21,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:21:21,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:21:21,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:21:21,625 INFO L87 Difference]: Start difference. First operand 191 states and 308 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:22,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:21:22,616 INFO L93 Difference]: Finished difference Result 522 states and 847 transitions. [2021-12-07 00:21:22,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:21:22,616 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-12-07 00:21:22,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:21:22,618 INFO L225 Difference]: With dead ends: 522 [2021-12-07 00:21:22,618 INFO L226 Difference]: Without dead ends: 352 [2021-12-07 00:21:22,619 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 [2021-12-07 00:21:22,620 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 153 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:21:22,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 652 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-07 00:21:22,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-12-07 00:21:22,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 223. [2021-12-07 00:21:22,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 1.617117117117117) internal successors, (359), 222 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:22,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 359 transitions. [2021-12-07 00:21:22,632 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 359 transitions. Word has length 58 [2021-12-07 00:21:22,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:21:22,633 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 359 transitions. [2021-12-07 00:21:22,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:22,633 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 359 transitions. [2021-12-07 00:21:22,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-07 00:21:22,635 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:21:22,635 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-07 00:21:22,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-07 00:21:22,635 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:21:22,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:21:22,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1851609621, now seen corresponding path program 1 times [2021-12-07 00:21:22,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:21:22,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568866856] [2021-12-07 00:21:22,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:21:22,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:21:22,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:21:22,717 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:21:22,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:21:22,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568866856] [2021-12-07 00:21:22,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568866856] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:21:22,717 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:21:22,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:21:22,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658232488] [2021-12-07 00:21:22,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:21:22,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:21:22,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:21:22,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:21:22,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:21:22,719 INFO L87 Difference]: Start difference. First operand 223 states and 359 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:23,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:21:23,848 INFO L93 Difference]: Finished difference Result 530 states and 850 transitions. [2021-12-07 00:21:23,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:21:23,848 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2021-12-07 00:21:23,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:21:23,851 INFO L225 Difference]: With dead ends: 530 [2021-12-07 00:21:23,851 INFO L226 Difference]: Without dead ends: 328 [2021-12-07 00:21:23,852 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 [2021-12-07 00:21:23,853 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 158 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:21:23,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 352 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-07 00:21:23,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2021-12-07 00:21:23,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 223. [2021-12-07 00:21:23,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 1.5990990990990992) internal successors, (355), 222 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:23,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 355 transitions. [2021-12-07 00:21:23,865 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 355 transitions. Word has length 59 [2021-12-07 00:21:23,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:21:23,865 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 355 transitions. [2021-12-07 00:21:23,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:23,865 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 355 transitions. [2021-12-07 00:21:23,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-07 00:21:23,867 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:21:23,868 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-07 00:21:23,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-07 00:21:23,868 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:21:23,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:21:23,869 INFO L85 PathProgramCache]: Analyzing trace with hash -556454231, now seen corresponding path program 1 times [2021-12-07 00:21:23,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:21:23,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872980270] [2021-12-07 00:21:23,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:21:23,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:21:23,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:21:23,969 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:21:23,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:21:23,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872980270] [2021-12-07 00:21:23,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872980270] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:21:23,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:21:23,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:21:23,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911193050] [2021-12-07 00:21:23,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:21:23,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:21:23,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:21:23,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:21:23,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:21:23,971 INFO L87 Difference]: Start difference. First operand 223 states and 355 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:24,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:21:24,549 INFO L93 Difference]: Finished difference Result 441 states and 699 transitions. [2021-12-07 00:21:24,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:21:24,550 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2021-12-07 00:21:24,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:21:24,551 INFO L225 Difference]: With dead ends: 441 [2021-12-07 00:21:24,551 INFO L226 Difference]: Without dead ends: 239 [2021-12-07 00:21:24,552 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 [2021-12-07 00:21:24,553 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 26 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-07 00:21:24,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 491 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-07 00:21:24,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-12-07 00:21:24,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 223. [2021-12-07 00:21:24,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 1.5945945945945945) internal successors, (354), 222 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:24,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 354 transitions. [2021-12-07 00:21:24,559 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 354 transitions. Word has length 59 [2021-12-07 00:21:24,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:21:24,559 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 354 transitions. [2021-12-07 00:21:24,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:24,559 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 354 transitions. [2021-12-07 00:21:24,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-07 00:21:24,560 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:21:24,560 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:21:24,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-07 00:21:24,560 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:21:24,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:21:24,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1408571008, now seen corresponding path program 1 times [2021-12-07 00:21:24,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:21:24,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753594547] [2021-12-07 00:21:24,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:21:24,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:21:24,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:21:24,634 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:21:24,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:21:24,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753594547] [2021-12-07 00:21:24,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753594547] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:21:24,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:21:24,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:21:24,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278568778] [2021-12-07 00:21:24,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:21:24,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:21:24,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:21:24,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:21:24,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:21:24,636 INFO L87 Difference]: Start difference. First operand 223 states and 354 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:26,045 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:21:26,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:21:26,222 INFO L93 Difference]: Finished difference Result 440 states and 697 transitions. [2021-12-07 00:21:26,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:21:26,223 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2021-12-07 00:21:26,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:21:26,224 INFO L225 Difference]: With dead ends: 440 [2021-12-07 00:21:26,224 INFO L226 Difference]: Without dead ends: 238 [2021-12-07 00:21:26,224 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 [2021-12-07 00:21:26,225 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 19 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-07 00:21:26,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 493 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-07 00:21:26,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-12-07 00:21:26,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 223. [2021-12-07 00:21:26,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 1.59009009009009) internal successors, (353), 222 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:26,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 353 transitions. [2021-12-07 00:21:26,231 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 353 transitions. Word has length 59 [2021-12-07 00:21:26,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:21:26,231 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 353 transitions. [2021-12-07 00:21:26,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:26,231 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 353 transitions. [2021-12-07 00:21:26,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-07 00:21:26,232 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:21:26,232 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:21:26,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-07 00:21:26,232 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:21:26,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:21:26,233 INFO L85 PathProgramCache]: Analyzing trace with hash 883176000, now seen corresponding path program 1 times [2021-12-07 00:21:26,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:21:26,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45662937] [2021-12-07 00:21:26,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:21:26,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:21:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:21:26,323 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:21:26,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:21:26,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45662937] [2021-12-07 00:21:26,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45662937] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:21:26,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:21:26,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:21:26,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895893143] [2021-12-07 00:21:26,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:21:26,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:21:26,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:21:26,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:21:26,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:21:26,326 INFO L87 Difference]: Start difference. First operand 223 states and 353 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:27,666 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:21:27,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:21:27,960 INFO L93 Difference]: Finished difference Result 530 states and 841 transitions. [2021-12-07 00:21:27,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:21:27,960 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2021-12-07 00:21:27,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:21:27,962 INFO L225 Difference]: With dead ends: 530 [2021-12-07 00:21:27,962 INFO L226 Difference]: Without dead ends: 328 [2021-12-07 00:21:27,963 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 [2021-12-07 00:21:27,963 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 151 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-07 00:21:27,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 352 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-07 00:21:27,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2021-12-07 00:21:27,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 224. [2021-12-07 00:21:27,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 1.5784753363228698) internal successors, (352), 223 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:27,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 352 transitions. [2021-12-07 00:21:27,973 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 352 transitions. Word has length 59 [2021-12-07 00:21:27,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:21:27,973 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 352 transitions. [2021-12-07 00:21:27,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:27,973 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 352 transitions. [2021-12-07 00:21:27,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-07 00:21:27,974 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:21:27,974 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-07 00:21:27,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-07 00:21:27,975 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:21:27,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:21:27,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1725722285, now seen corresponding path program 1 times [2021-12-07 00:21:27,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:21:27,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611280229] [2021-12-07 00:21:27,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:21:27,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:21:28,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:21:28,044 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:21:28,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:21:28,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611280229] [2021-12-07 00:21:28,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611280229] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:21:28,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:21:28,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:21:28,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259168200] [2021-12-07 00:21:28,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:21:28,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:21:28,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:21:28,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:21:28,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:21:28,046 INFO L87 Difference]: Start difference. First operand 224 states and 352 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:30,054 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:21:30,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:21:30,279 INFO L93 Difference]: Finished difference Result 440 states and 693 transitions. [2021-12-07 00:21:30,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:21:30,279 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2021-12-07 00:21:30,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:21:30,281 INFO L225 Difference]: With dead ends: 440 [2021-12-07 00:21:30,281 INFO L226 Difference]: Without dead ends: 237 [2021-12-07 00:21:30,282 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 [2021-12-07 00:21:30,282 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 22 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:21:30,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 497 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 140 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2021-12-07 00:21:30,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-12-07 00:21:30,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 224. [2021-12-07 00:21:30,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 1.5739910313901346) internal successors, (351), 223 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:30,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 351 transitions. [2021-12-07 00:21:30,291 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 351 transitions. Word has length 60 [2021-12-07 00:21:30,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:21:30,291 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 351 transitions. [2021-12-07 00:21:30,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:30,291 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 351 transitions. [2021-12-07 00:21:30,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-07 00:21:30,292 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:21:30,292 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:21:30,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-07 00:21:30,293 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:21:30,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:21:30,293 INFO L85 PathProgramCache]: Analyzing trace with hash 723512942, now seen corresponding path program 1 times [2021-12-07 00:21:30,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:21:30,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120790621] [2021-12-07 00:21:30,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:21:30,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:21:30,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:21:30,381 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:21:30,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:21:30,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120790621] [2021-12-07 00:21:30,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120790621] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:21:30,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:21:30,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:21:30,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581327188] [2021-12-07 00:21:30,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:21:30,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:21:30,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:21:30,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:21:30,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:21:30,384 INFO L87 Difference]: Start difference. First operand 224 states and 351 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:31,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:21:31,505 INFO L93 Difference]: Finished difference Result 440 states and 692 transitions. [2021-12-07 00:21:31,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:21:31,505 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2021-12-07 00:21:31,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:21:31,507 INFO L225 Difference]: With dead ends: 440 [2021-12-07 00:21:31,507 INFO L226 Difference]: Without dead ends: 237 [2021-12-07 00:21:31,507 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 [2021-12-07 00:21:31,508 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 20 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:21:31,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 497 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-07 00:21:31,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-12-07 00:21:31,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 224. [2021-12-07 00:21:31,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 1.5695067264573992) internal successors, (350), 223 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:31,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 350 transitions. [2021-12-07 00:21:31,513 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 350 transitions. Word has length 61 [2021-12-07 00:21:31,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:21:31,513 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 350 transitions. [2021-12-07 00:21:31,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:31,513 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 350 transitions. [2021-12-07 00:21:31,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-07 00:21:31,514 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:21:31,514 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:21:31,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-07 00:21:31,514 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:21:31,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:21:31,515 INFO L85 PathProgramCache]: Analyzing trace with hash 984557074, now seen corresponding path program 1 times [2021-12-07 00:21:31,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:21:31,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696594737] [2021-12-07 00:21:31,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:21:31,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:21:31,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:21:31,577 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:21:31,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:21:31,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696594737] [2021-12-07 00:21:31,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696594737] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:21:31,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:21:31,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:21:31,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968574574] [2021-12-07 00:21:31,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:21:31,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:21:31,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:21:31,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:21:31,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:21:31,579 INFO L87 Difference]: Start difference. First operand 224 states and 350 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:33,089 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:21:33,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:21:33,246 INFO L93 Difference]: Finished difference Result 430 states and 678 transitions. [2021-12-07 00:21:33,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:21:33,247 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2021-12-07 00:21:33,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:21:33,248 INFO L225 Difference]: With dead ends: 430 [2021-12-07 00:21:33,248 INFO L226 Difference]: Without dead ends: 227 [2021-12-07 00:21:33,248 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 [2021-12-07 00:21:33,249 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 11 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-07 00:21:33,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 511 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-07 00:21:33,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-12-07 00:21:33,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 224. [2021-12-07 00:21:33,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 1.5650224215246638) internal successors, (349), 223 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:33,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 349 transitions. [2021-12-07 00:21:33,260 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 349 transitions. Word has length 62 [2021-12-07 00:21:33,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:21:33,260 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 349 transitions. [2021-12-07 00:21:33,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:33,261 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 349 transitions. [2021-12-07 00:21:33,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-07 00:21:33,261 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:21:33,261 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:21:33,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-07 00:21:33,262 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:21:33,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:21:33,262 INFO L85 PathProgramCache]: Analyzing trace with hash 372683642, now seen corresponding path program 1 times [2021-12-07 00:21:33,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:21:33,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86441924] [2021-12-07 00:21:33,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:21:33,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:21:33,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:21:33,323 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:21:33,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:21:33,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86441924] [2021-12-07 00:21:33,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86441924] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:21:33,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:21:33,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:21:33,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200651111] [2021-12-07 00:21:33,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:21:33,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:21:33,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:21:33,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:21:33,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:21:33,325 INFO L87 Difference]: Start difference. First operand 224 states and 349 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:35,072 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:21:35,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:21:35,270 INFO L93 Difference]: Finished difference Result 467 states and 733 transitions. [2021-12-07 00:21:35,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:21:35,270 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2021-12-07 00:21:35,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:21:35,272 INFO L225 Difference]: With dead ends: 467 [2021-12-07 00:21:35,272 INFO L226 Difference]: Without dead ends: 264 [2021-12-07 00:21:35,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:21:35,273 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 31 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-07 00:21:35,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 515 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-07 00:21:35,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-12-07 00:21:35,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 246. [2021-12-07 00:21:35,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 1.5673469387755101) internal successors, (384), 245 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:35,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 384 transitions. [2021-12-07 00:21:35,278 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 384 transitions. Word has length 62 [2021-12-07 00:21:35,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:21:35,278 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 384 transitions. [2021-12-07 00:21:35,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:35,279 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 384 transitions. [2021-12-07 00:21:35,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-07 00:21:35,279 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:21:35,279 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-12-07 00:21:35,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-07 00:21:35,280 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:21:35,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:21:35,280 INFO L85 PathProgramCache]: Analyzing trace with hash 91774590, now seen corresponding path program 1 times [2021-12-07 00:21:35,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:21:35,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383045395] [2021-12-07 00:21:35,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:21:35,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:21:35,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:21:35,354 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:21:35,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:21:35,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383045395] [2021-12-07 00:21:35,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383045395] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:21:35,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:21:35,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:21:35,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145621770] [2021-12-07 00:21:35,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:21:35,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:21:35,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:21:35,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:21:35,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:21:35,355 INFO L87 Difference]: Start difference. First operand 246 states and 384 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 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) [2021-12-07 00:21:37,362 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:21:37,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:21:37,638 INFO L93 Difference]: Finished difference Result 575 states and 905 transitions. [2021-12-07 00:21:37,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:21:37,638 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 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 [2021-12-07 00:21:37,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:21:37,640 INFO L225 Difference]: With dead ends: 575 [2021-12-07 00:21:37,640 INFO L226 Difference]: Without dead ends: 350 [2021-12-07 00:21:37,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:21:37,641 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 156 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 61 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-07 00:21:37,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 352 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 259 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2021-12-07 00:21:37,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-12-07 00:21:37,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 246. [2021-12-07 00:21:37,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 1.5510204081632653) internal successors, (380), 245 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:37,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 380 transitions. [2021-12-07 00:21:37,647 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 380 transitions. Word has length 76 [2021-12-07 00:21:37,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:21:37,647 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 380 transitions. [2021-12-07 00:21:37,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 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) [2021-12-07 00:21:37,647 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 380 transitions. [2021-12-07 00:21:37,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-07 00:21:37,648 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:21:37,648 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-07 00:21:37,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-07 00:21:37,648 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:21:37,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:21:37,649 INFO L85 PathProgramCache]: Analyzing trace with hash -760342187, now seen corresponding path program 1 times [2021-12-07 00:21:37,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:21:37,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049679905] [2021-12-07 00:21:37,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:21:37,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:21:37,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:21:37,711 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:21:37,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:21:37,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049679905] [2021-12-07 00:21:37,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049679905] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:21:37,711 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:21:37,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:21:37,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146988826] [2021-12-07 00:21:37,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:21:37,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:21:37,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:21:37,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:21:37,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:21:37,712 INFO L87 Difference]: Start difference. First operand 246 states and 380 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 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) [2021-12-07 00:21:39,105 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:21:39,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:21:39,272 INFO L93 Difference]: Finished difference Result 488 states and 758 transitions. [2021-12-07 00:21:39,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:21:39,272 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 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 [2021-12-07 00:21:39,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:21:39,274 INFO L225 Difference]: With dead ends: 488 [2021-12-07 00:21:39,274 INFO L226 Difference]: Without dead ends: 263 [2021-12-07 00:21:39,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:21:39,275 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 33 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-07 00:21:39,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 517 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-07 00:21:39,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-12-07 00:21:39,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 246. [2021-12-07 00:21:39,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 1.546938775510204) internal successors, (379), 245 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:39,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 379 transitions. [2021-12-07 00:21:39,281 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 379 transitions. Word has length 76 [2021-12-07 00:21:39,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:21:39,281 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 379 transitions. [2021-12-07 00:21:39,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 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) [2021-12-07 00:21:39,281 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 379 transitions. [2021-12-07 00:21:39,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-07 00:21:39,282 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:21:39,282 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:21:39,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-07 00:21:39,282 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:21:39,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:21:39,283 INFO L85 PathProgramCache]: Analyzing trace with hash 345979256, now seen corresponding path program 1 times [2021-12-07 00:21:39,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:21:39,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032450311] [2021-12-07 00:21:39,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:21:39,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:21:39,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:21:39,345 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:21:39,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:21:39,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032450311] [2021-12-07 00:21:39,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032450311] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:21:39,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:21:39,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:21:39,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150625945] [2021-12-07 00:21:39,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:21:39,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:21:39,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:21:39,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:21:39,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:21:39,347 INFO L87 Difference]: Start difference. First operand 246 states and 379 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 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) [2021-12-07 00:21:40,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:21:40,490 INFO L93 Difference]: Finished difference Result 575 states and 895 transitions. [2021-12-07 00:21:40,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:21:40,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 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 [2021-12-07 00:21:40,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:21:40,492 INFO L225 Difference]: With dead ends: 575 [2021-12-07 00:21:40,492 INFO L226 Difference]: Without dead ends: 350 [2021-12-07 00:21:40,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:21:40,493 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 154 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:21:40,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 352 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-07 00:21:40,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-12-07 00:21:40,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 246. [2021-12-07 00:21:40,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 1.530612244897959) internal successors, (375), 245 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:40,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 375 transitions. [2021-12-07 00:21:40,507 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 375 transitions. Word has length 77 [2021-12-07 00:21:40,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:21:40,507 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 375 transitions. [2021-12-07 00:21:40,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 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) [2021-12-07 00:21:40,507 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 375 transitions. [2021-12-07 00:21:40,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-07 00:21:40,508 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:21:40,508 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2021-12-07 00:21:40,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-07 00:21:40,509 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:21:40,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:21:40,509 INFO L85 PathProgramCache]: Analyzing trace with hash 901152003, now seen corresponding path program 1 times [2021-12-07 00:21:40,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:21:40,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189213487] [2021-12-07 00:21:40,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:21:40,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:21:40,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:21:40,595 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:21:40,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:21:40,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189213487] [2021-12-07 00:21:40,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189213487] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:21:40,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:21:40,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:21:40,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527928405] [2021-12-07 00:21:40,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:21:40,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:21:40,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:21:40,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:21:40,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:21:40,597 INFO L87 Difference]: Start difference. First operand 246 states and 375 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:41,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:21:41,676 INFO L93 Difference]: Finished difference Result 575 states and 887 transitions. [2021-12-07 00:21:41,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:21:41,677 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-12-07 00:21:41,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:21:41,679 INFO L225 Difference]: With dead ends: 575 [2021-12-07 00:21:41,679 INFO L226 Difference]: Without dead ends: 350 [2021-12-07 00:21:41,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:21:41,680 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 152 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:21:41,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 352 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-07 00:21:41,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-12-07 00:21:41,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 246. [2021-12-07 00:21:41,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 1.5142857142857142) internal successors, (371), 245 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:41,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 371 transitions. [2021-12-07 00:21:41,689 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 371 transitions. Word has length 78 [2021-12-07 00:21:41,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:21:41,689 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 371 transitions. [2021-12-07 00:21:41,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:41,690 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 371 transitions. [2021-12-07 00:21:41,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-07 00:21:41,690 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:21:41,691 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2021-12-07 00:21:41,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-07 00:21:41,691 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:21:41,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:21:41,691 INFO L85 PathProgramCache]: Analyzing trace with hash -2098566627, now seen corresponding path program 1 times [2021-12-07 00:21:41,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:21:41,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470094045] [2021-12-07 00:21:41,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:21:41,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:21:41,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:21:41,782 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:21:41,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:21:41,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470094045] [2021-12-07 00:21:41,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470094045] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:21:41,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:21:41,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:21:41,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832304629] [2021-12-07 00:21:41,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:21:41,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:21:41,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:21:41,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:21:41,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:21:41,783 INFO L87 Difference]: Start difference. First operand 246 states and 371 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:42,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:21:42,859 INFO L93 Difference]: Finished difference Result 565 states and 866 transitions. [2021-12-07 00:21:42,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:21:42,859 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-12-07 00:21:42,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:21:42,861 INFO L225 Difference]: With dead ends: 565 [2021-12-07 00:21:42,861 INFO L226 Difference]: Without dead ends: 340 [2021-12-07 00:21:42,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:21:42,862 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 143 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:21:42,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 372 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-07 00:21:42,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-12-07 00:21:42,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 246. [2021-12-07 00:21:42,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 1.4979591836734694) internal successors, (367), 245 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:42,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 367 transitions. [2021-12-07 00:21:42,867 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 367 transitions. Word has length 79 [2021-12-07 00:21:42,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:21:42,868 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 367 transitions. [2021-12-07 00:21:42,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:42,868 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 367 transitions. [2021-12-07 00:21:42,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-12-07 00:21:42,868 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:21:42,868 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-07 00:21:42,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-07 00:21:42,869 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:21:42,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:21:42,869 INFO L85 PathProgramCache]: Analyzing trace with hash -549995900, now seen corresponding path program 1 times [2021-12-07 00:21:42,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:21:42,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812574423] [2021-12-07 00:21:42,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:21:42,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:21:42,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:21:42,962 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-07 00:21:42,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:21:42,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812574423] [2021-12-07 00:21:42,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812574423] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:21:42,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:21:42,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:21:42,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63049144] [2021-12-07 00:21:42,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:21:42,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:21:42,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:21:42,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:21:42,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:21:42,964 INFO L87 Difference]: Start difference. First operand 246 states and 367 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) [2021-12-07 00:21:44,972 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:21:45,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:21:45,228 INFO L93 Difference]: Finished difference Result 565 states and 858 transitions. [2021-12-07 00:21:45,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:21:45,229 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 84 [2021-12-07 00:21:45,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:21:45,230 INFO L225 Difference]: With dead ends: 565 [2021-12-07 00:21:45,230 INFO L226 Difference]: Without dead ends: 340 [2021-12-07 00:21:45,231 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 [2021-12-07 00:21:45,231 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 117 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 51 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-07 00:21:45,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 390 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 245 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2021-12-07 00:21:45,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-12-07 00:21:45,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 269. [2021-12-07 00:21:45,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 1.537313432835821) internal successors, (412), 268 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:45,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 412 transitions. [2021-12-07 00:21:45,236 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 412 transitions. Word has length 84 [2021-12-07 00:21:45,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:21:45,237 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 412 transitions. [2021-12-07 00:21:45,237 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) [2021-12-07 00:21:45,237 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 412 transitions. [2021-12-07 00:21:45,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-07 00:21:45,238 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:21:45,238 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2021-12-07 00:21:45,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-07 00:21:45,238 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:21:45,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:21:45,238 INFO L85 PathProgramCache]: Analyzing trace with hash -234714967, now seen corresponding path program 1 times [2021-12-07 00:21:45,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:21:45,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689832280] [2021-12-07 00:21:45,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:21:45,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:21:45,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:21:45,315 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-07 00:21:45,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:21:45,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689832280] [2021-12-07 00:21:45,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689832280] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:21:45,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:21:45,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:21:45,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042902618] [2021-12-07 00:21:45,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:21:45,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:21:45,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:21:45,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:21:45,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:21:45,316 INFO L87 Difference]: Start difference. First operand 269 states and 412 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 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) [2021-12-07 00:21:46,772 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:21:47,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:21:47,017 INFO L93 Difference]: Finished difference Result 604 states and 932 transitions. [2021-12-07 00:21:47,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:21:47,018 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 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 112 [2021-12-07 00:21:47,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:21:47,019 INFO L225 Difference]: With dead ends: 604 [2021-12-07 00:21:47,019 INFO L226 Difference]: Without dead ends: 356 [2021-12-07 00:21:47,020 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 [2021-12-07 00:21:47,020 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 84 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-07 00:21:47,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 493 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-07 00:21:47,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2021-12-07 00:21:47,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 303. [2021-12-07 00:21:47,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 302 states have (on average 1.5397350993377483) internal successors, (465), 302 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:47,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 465 transitions. [2021-12-07 00:21:47,026 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 465 transitions. Word has length 112 [2021-12-07 00:21:47,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:21:47,027 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 465 transitions. [2021-12-07 00:21:47,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 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) [2021-12-07 00:21:47,027 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 465 transitions. [2021-12-07 00:21:47,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-07 00:21:47,028 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:21:47,028 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2021-12-07 00:21:47,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-07 00:21:47,028 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:21:47,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:21:47,028 INFO L85 PathProgramCache]: Analyzing trace with hash -727341141, now seen corresponding path program 1 times [2021-12-07 00:21:47,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:21:47,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232819154] [2021-12-07 00:21:47,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:21:47,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:21:47,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:21:47,123 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-07 00:21:47,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:21:47,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232819154] [2021-12-07 00:21:47,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232819154] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:21:47,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:21:47,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:21:47,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690181965] [2021-12-07 00:21:47,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:21:47,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:21:47,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:21:47,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:21:47,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:21:47,125 INFO L87 Difference]: Start difference. First operand 303 states and 465 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 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) [2021-12-07 00:21:47,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:21:47,800 INFO L93 Difference]: Finished difference Result 732 states and 1136 transitions. [2021-12-07 00:21:47,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:21:47,801 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 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 112 [2021-12-07 00:21:47,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:21:47,803 INFO L225 Difference]: With dead ends: 732 [2021-12-07 00:21:47,803 INFO L226 Difference]: Without dead ends: 450 [2021-12-07 00:21:47,804 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 [2021-12-07 00:21:47,804 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 123 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-07 00:21:47,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 382 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-07 00:21:47,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-12-07 00:21:47,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 333. [2021-12-07 00:21:47,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 332 states have (on average 1.5481927710843373) internal successors, (514), 332 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:47,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 514 transitions. [2021-12-07 00:21:47,811 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 514 transitions. Word has length 112 [2021-12-07 00:21:47,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:21:47,811 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 514 transitions. [2021-12-07 00:21:47,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 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) [2021-12-07 00:21:47,811 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 514 transitions. [2021-12-07 00:21:47,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-07 00:21:47,812 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:21:47,812 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2021-12-07 00:21:47,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-07 00:21:47,812 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:21:47,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:21:47,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1925843136, now seen corresponding path program 1 times [2021-12-07 00:21:47,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:21:47,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251139705] [2021-12-07 00:21:47,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:21:47,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:21:47,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:21:47,892 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-07 00:21:47,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:21:47,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251139705] [2021-12-07 00:21:47,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251139705] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:21:47,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:21:47,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:21:47,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003332803] [2021-12-07 00:21:47,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:21:47,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:21:47,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:21:47,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:21:47,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:21:47,894 INFO L87 Difference]: Start difference. First operand 333 states and 514 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 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) [2021-12-07 00:21:48,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:21:48,992 INFO L93 Difference]: Finished difference Result 756 states and 1171 transitions. [2021-12-07 00:21:48,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:21:48,993 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 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 118 [2021-12-07 00:21:48,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:21:48,995 INFO L225 Difference]: With dead ends: 756 [2021-12-07 00:21:48,995 INFO L226 Difference]: Without dead ends: 444 [2021-12-07 00:21:48,995 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 [2021-12-07 00:21:48,996 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 119 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:21:48,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 370 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-07 00:21:48,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-12-07 00:21:49,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 370. [2021-12-07 00:21:49,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 369 states have (on average 1.5528455284552845) internal successors, (573), 369 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:49,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 573 transitions. [2021-12-07 00:21:49,003 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 573 transitions. Word has length 118 [2021-12-07 00:21:49,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:21:49,003 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 573 transitions. [2021-12-07 00:21:49,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 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) [2021-12-07 00:21:49,003 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 573 transitions. [2021-12-07 00:21:49,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-07 00:21:49,004 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:21:49,004 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2021-12-07 00:21:49,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-07 00:21:49,004 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:21:49,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:21:49,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1453716479, now seen corresponding path program 1 times [2021-12-07 00:21:49,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:21:49,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063568408] [2021-12-07 00:21:49,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:21:49,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:21:49,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:21:49,079 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-07 00:21:49,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:21:49,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063568408] [2021-12-07 00:21:49,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063568408] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:21:49,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:21:49,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:21:49,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62913122] [2021-12-07 00:21:49,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:21:49,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:21:49,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:21:49,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:21:49,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:21:49,080 INFO L87 Difference]: Start difference. First operand 370 states and 573 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) [2021-12-07 00:21:50,890 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:21:51,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:21:51,134 INFO L93 Difference]: Finished difference Result 803 states and 1248 transitions. [2021-12-07 00:21:51,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:21:51,134 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 119 [2021-12-07 00:21:51,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:21:51,136 INFO L225 Difference]: With dead ends: 803 [2021-12-07 00:21:51,136 INFO L226 Difference]: Without dead ends: 454 [2021-12-07 00:21:51,137 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 [2021-12-07 00:21:51,137 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 73 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:21:51,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 495 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-07 00:21:51,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2021-12-07 00:21:51,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 410. [2021-12-07 00:21:51,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 409 states have (on average 1.5550122249388754) internal successors, (636), 409 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:51,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 636 transitions. [2021-12-07 00:21:51,145 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 636 transitions. Word has length 119 [2021-12-07 00:21:51,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:21:51,145 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 636 transitions. [2021-12-07 00:21:51,145 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) [2021-12-07 00:21:51,145 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 636 transitions. [2021-12-07 00:21:51,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-07 00:21:51,146 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:21:51,146 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2021-12-07 00:21:51,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-07 00:21:51,147 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:21:51,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:21:51,147 INFO L85 PathProgramCache]: Analyzing trace with hash 763913919, now seen corresponding path program 1 times [2021-12-07 00:21:51,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:21:51,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141945015] [2021-12-07 00:21:51,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:21:51,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:21:51,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:21:51,245 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-07 00:21:51,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:21:51,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141945015] [2021-12-07 00:21:51,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141945015] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:21:51,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:21:51,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:21:51,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150004911] [2021-12-07 00:21:51,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:21:51,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:21:51,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:21:51,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:21:51,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:21:51,247 INFO L87 Difference]: Start difference. First operand 410 states and 636 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 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) [2021-12-07 00:21:52,359 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:21:52,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:21:52,542 INFO L93 Difference]: Finished difference Result 836 states and 1301 transitions. [2021-12-07 00:21:52,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:21:52,543 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 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 119 [2021-12-07 00:21:52,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:21:52,545 INFO L225 Difference]: With dead ends: 836 [2021-12-07 00:21:52,545 INFO L226 Difference]: Without dead ends: 447 [2021-12-07 00:21:52,546 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 [2021-12-07 00:21:52,546 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 28 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-07 00:21:52,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 595 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-07 00:21:52,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2021-12-07 00:21:52,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 434. [2021-12-07 00:21:52,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 433 states have (on average 1.5496535796766744) internal successors, (671), 433 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:52,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 671 transitions. [2021-12-07 00:21:52,554 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 671 transitions. Word has length 119 [2021-12-07 00:21:52,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:21:52,555 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 671 transitions. [2021-12-07 00:21:52,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 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) [2021-12-07 00:21:52,555 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 671 transitions. [2021-12-07 00:21:52,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-12-07 00:21:52,556 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:21:52,556 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2021-12-07 00:21:52,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-07 00:21:52,556 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:21:52,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:21:52,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1150598766, now seen corresponding path program 1 times [2021-12-07 00:21:52,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:21:52,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215334670] [2021-12-07 00:21:52,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:21:52,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:21:52,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:21:52,654 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-07 00:21:52,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:21:52,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215334670] [2021-12-07 00:21:52,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215334670] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:21:52,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:21:52,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:21:52,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870029842] [2021-12-07 00:21:52,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:21:52,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:21:52,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:21:52,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:21:52,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:21:52,655 INFO L87 Difference]: Start difference. First operand 434 states and 671 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:53,678 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:21:53,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:21:53,913 INFO L93 Difference]: Finished difference Result 885 states and 1371 transitions. [2021-12-07 00:21:53,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:21:53,914 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2021-12-07 00:21:53,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:21:53,916 INFO L225 Difference]: With dead ends: 885 [2021-12-07 00:21:53,916 INFO L226 Difference]: Without dead ends: 472 [2021-12-07 00:21:53,916 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 [2021-12-07 00:21:53,917 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 61 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:21:53,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 501 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-07 00:21:53,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-12-07 00:21:53,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 437. [2021-12-07 00:21:53,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 436 states have (on average 1.5458715596330275) internal successors, (674), 436 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:53,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 674 transitions. [2021-12-07 00:21:53,924 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 674 transitions. Word has length 126 [2021-12-07 00:21:53,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:21:53,924 INFO L470 AbstractCegarLoop]: Abstraction has 437 states and 674 transitions. [2021-12-07 00:21:53,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:53,925 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 674 transitions. [2021-12-07 00:21:53,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-07 00:21:53,925 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:21:53,926 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 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] [2021-12-07 00:21:53,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-07 00:21:53,926 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:21:53,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:21:53,926 INFO L85 PathProgramCache]: Analyzing trace with hash 29247942, now seen corresponding path program 1 times [2021-12-07 00:21:53,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:21:53,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931771546] [2021-12-07 00:21:53,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:21:53,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:21:53,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:21:54,012 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-12-07 00:21:54,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:21:54,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931771546] [2021-12-07 00:21:54,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931771546] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:21:54,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:21:54,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:21:54,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290529191] [2021-12-07 00:21:54,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:21:54,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:21:54,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:21:54,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:21:54,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:21:54,013 INFO L87 Difference]: Start difference. First operand 437 states and 674 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:55,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:21:55,122 INFO L93 Difference]: Finished difference Result 887 states and 1372 transitions. [2021-12-07 00:21:55,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:21:55,122 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2021-12-07 00:21:55,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:21:55,124 INFO L225 Difference]: With dead ends: 887 [2021-12-07 00:21:55,124 INFO L226 Difference]: Without dead ends: 471 [2021-12-07 00:21:55,124 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 [2021-12-07 00:21:55,125 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 83 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:21:55,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 503 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-07 00:21:55,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2021-12-07 00:21:55,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 437. [2021-12-07 00:21:55,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 436 states have (on average 1.5435779816513762) internal successors, (673), 436 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:55,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 673 transitions. [2021-12-07 00:21:55,133 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 673 transitions. Word has length 133 [2021-12-07 00:21:55,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:21:55,133 INFO L470 AbstractCegarLoop]: Abstraction has 437 states and 673 transitions. [2021-12-07 00:21:55,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:55,133 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 673 transitions. [2021-12-07 00:21:55,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-07 00:21:55,134 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:21:55,134 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 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] [2021-12-07 00:21:55,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-07 00:21:55,134 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:21:55,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:21:55,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1906311172, now seen corresponding path program 1 times [2021-12-07 00:21:55,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:21:55,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886390234] [2021-12-07 00:21:55,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:21:55,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:21:55,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:21:55,204 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-12-07 00:21:55,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:21:55,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886390234] [2021-12-07 00:21:55,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886390234] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:21:55,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:21:55,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:21:55,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422675195] [2021-12-07 00:21:55,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:21:55,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:21:55,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:21:55,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:21:55,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:21:55,205 INFO L87 Difference]: Start difference. First operand 437 states and 673 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:56,769 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:21:56,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:21:56,962 INFO L93 Difference]: Finished difference Result 865 states and 1338 transitions. [2021-12-07 00:21:56,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:21:56,962 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2021-12-07 00:21:56,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:21:56,964 INFO L225 Difference]: With dead ends: 865 [2021-12-07 00:21:56,964 INFO L226 Difference]: Without dead ends: 449 [2021-12-07 00:21:56,965 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 [2021-12-07 00:21:56,965 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 33 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-07 00:21:56,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 595 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-07 00:21:56,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2021-12-07 00:21:56,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 437. [2021-12-07 00:21:56,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 436 states have (on average 1.5412844036697249) internal successors, (672), 436 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:56,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 672 transitions. [2021-12-07 00:21:56,976 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 672 transitions. Word has length 133 [2021-12-07 00:21:56,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:21:56,976 INFO L470 AbstractCegarLoop]: Abstraction has 437 states and 672 transitions. [2021-12-07 00:21:56,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:56,977 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 672 transitions. [2021-12-07 00:21:56,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-07 00:21:56,978 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:21:56,978 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-07 00:21:56,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-07 00:21:56,979 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:21:56,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:21:56,979 INFO L85 PathProgramCache]: Analyzing trace with hash 130218183, now seen corresponding path program 1 times [2021-12-07 00:21:56,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:21:56,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950065907] [2021-12-07 00:21:56,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:21:56,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:21:57,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:21:57,066 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-07 00:21:57,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:21:57,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950065907] [2021-12-07 00:21:57,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950065907] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:21:57,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:21:57,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:21:57,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908574910] [2021-12-07 00:21:57,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:21:57,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:21:57,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:21:57,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:21:57,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:21:57,068 INFO L87 Difference]: Start difference. First operand 437 states and 672 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:58,165 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:21:58,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:21:58,408 INFO L93 Difference]: Finished difference Result 964 states and 1486 transitions. [2021-12-07 00:21:58,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:21:58,408 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 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 139 [2021-12-07 00:21:58,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:21:58,410 INFO L225 Difference]: With dead ends: 964 [2021-12-07 00:21:58,410 INFO L226 Difference]: Without dead ends: 548 [2021-12-07 00:21:58,411 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 [2021-12-07 00:21:58,411 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 126 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-07 00:21:58,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 390 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-07 00:21:58,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2021-12-07 00:21:58,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 467. [2021-12-07 00:21:58,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 466 states have (on average 1.5321888412017168) internal successors, (714), 466 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:58,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 714 transitions. [2021-12-07 00:21:58,420 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 714 transitions. Word has length 139 [2021-12-07 00:21:58,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:21:58,420 INFO L470 AbstractCegarLoop]: Abstraction has 467 states and 714 transitions. [2021-12-07 00:21:58,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:21:58,420 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 714 transitions. [2021-12-07 00:21:58,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-07 00:21:58,421 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:21:58,421 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-07 00:21:58,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-07 00:21:58,421 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:21:58,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:21:58,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1668573377, now seen corresponding path program 1 times [2021-12-07 00:21:58,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:21:58,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890801620] [2021-12-07 00:21:58,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:21:58,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:21:58,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:21:58,497 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-07 00:21:58,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:21:58,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890801620] [2021-12-07 00:21:58,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890801620] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:21:58,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:21:58,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:21:58,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702175553] [2021-12-07 00:21:58,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:21:58,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:21:58,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:21:58,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:21:58,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:21:58,499 INFO L87 Difference]: Start difference. First operand 467 states and 714 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) [2021-12-07 00:21:59,837 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:22:00,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:22:00,101 INFO L93 Difference]: Finished difference Result 984 states and 1506 transitions. [2021-12-07 00:22:00,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:22:00,101 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 140 [2021-12-07 00:22:00,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:22:00,103 INFO L225 Difference]: With dead ends: 984 [2021-12-07 00:22:00,103 INFO L226 Difference]: Without dead ends: 538 [2021-12-07 00:22:00,104 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 [2021-12-07 00:22:00,104 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 125 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-07 00:22:00,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 370 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-07 00:22:00,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2021-12-07 00:22:00,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 467. [2021-12-07 00:22:00,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 466 states have (on average 1.51931330472103) internal successors, (708), 466 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:22:00,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 708 transitions. [2021-12-07 00:22:00,113 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 708 transitions. Word has length 140 [2021-12-07 00:22:00,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:22:00,113 INFO L470 AbstractCegarLoop]: Abstraction has 467 states and 708 transitions. [2021-12-07 00:22:00,113 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) [2021-12-07 00:22:00,113 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 708 transitions. [2021-12-07 00:22:00,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-07 00:22:00,114 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:22:00,114 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2021-12-07 00:22:00,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-07 00:22:00,114 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:22:00,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:22:00,115 INFO L85 PathProgramCache]: Analyzing trace with hash 902292681, now seen corresponding path program 1 times [2021-12-07 00:22:00,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:22:00,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526219111] [2021-12-07 00:22:00,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:22:00,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:22:00,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:22:00,189 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-12-07 00:22:00,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:22:00,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526219111] [2021-12-07 00:22:00,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526219111] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:22:00,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:22:00,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:22:00,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980342810] [2021-12-07 00:22:00,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:22:00,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:22:00,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:22:00,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:22:00,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:22:00,190 INFO L87 Difference]: Start difference. First operand 467 states and 708 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) [2021-12-07 00:22:01,445 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:22:01,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:22:01,680 INFO L93 Difference]: Finished difference Result 945 states and 1438 transitions. [2021-12-07 00:22:01,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:22:01,680 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 141 [2021-12-07 00:22:01,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:22:01,683 INFO L225 Difference]: With dead ends: 945 [2021-12-07 00:22:01,683 INFO L226 Difference]: Without dead ends: 499 [2021-12-07 00:22:01,684 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 [2021-12-07 00:22:01,685 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 73 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-07 00:22:01,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 521 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-07 00:22:01,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2021-12-07 00:22:01,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 467. [2021-12-07 00:22:01,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 466 states have (on average 1.5171673819742488) internal successors, (707), 466 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:22:01,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 707 transitions. [2021-12-07 00:22:01,697 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 707 transitions. Word has length 141 [2021-12-07 00:22:01,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:22:01,697 INFO L470 AbstractCegarLoop]: Abstraction has 467 states and 707 transitions. [2021-12-07 00:22:01,697 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) [2021-12-07 00:22:01,697 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 707 transitions. [2021-12-07 00:22:01,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-07 00:22:01,699 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:22:01,699 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2021-12-07 00:22:01,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-07 00:22:01,699 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:22:01,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:22:01,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1004110585, now seen corresponding path program 1 times [2021-12-07 00:22:01,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:22:01,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201283536] [2021-12-07 00:22:01,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:22:01,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:22:01,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:22:01,779 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 00:22:01,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:22:01,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201283536] [2021-12-07 00:22:01,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201283536] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:22:01,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:22:01,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:22:01,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413801535] [2021-12-07 00:22:01,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:22:01,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:22:01,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:22:01,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:22:01,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:22:01,781 INFO L87 Difference]: Start difference. First operand 467 states and 707 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:22:01,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:22:01,827 INFO L93 Difference]: Finished difference Result 1356 states and 2069 transitions. [2021-12-07 00:22:01,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:22:01,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2021-12-07 00:22:01,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:22:01,831 INFO L225 Difference]: With dead ends: 1356 [2021-12-07 00:22:01,831 INFO L226 Difference]: Without dead ends: 910 [2021-12-07 00:22:01,832 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 [2021-12-07 00:22:01,832 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 145 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:22:01,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 431 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:22:01,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2021-12-07 00:22:01,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 910. [2021-12-07 00:22:01,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 909 states have (on average 1.5115511551155116) internal successors, (1374), 909 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:22:01,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1374 transitions. [2021-12-07 00:22:01,847 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1374 transitions. Word has length 141 [2021-12-07 00:22:01,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:22:01,847 INFO L470 AbstractCegarLoop]: Abstraction has 910 states and 1374 transitions. [2021-12-07 00:22:01,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:22:01,847 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1374 transitions. [2021-12-07 00:22:01,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-07 00:22:01,848 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:22:01,849 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2021-12-07 00:22:01,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-07 00:22:01,849 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:22:01,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:22:01,849 INFO L85 PathProgramCache]: Analyzing trace with hash 893386181, now seen corresponding path program 1 times [2021-12-07 00:22:01,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:22:01,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670312683] [2021-12-07 00:22:01,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:22:01,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:22:01,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:22:01,929 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-12-07 00:22:01,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:22:01,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670312683] [2021-12-07 00:22:01,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670312683] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:22:01,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:22:01,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:22:01,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010445524] [2021-12-07 00:22:01,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:22:01,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:22:01,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:22:01,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:22:01,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:22:01,931 INFO L87 Difference]: Start difference. First operand 910 states and 1374 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:22:01,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:22:01,966 INFO L93 Difference]: Finished difference Result 1826 states and 2760 transitions. [2021-12-07 00:22:01,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:22:01,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2021-12-07 00:22:01,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:22:01,970 INFO L225 Difference]: With dead ends: 1826 [2021-12-07 00:22:01,970 INFO L226 Difference]: Without dead ends: 937 [2021-12-07 00:22:01,971 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 [2021-12-07 00:22:01,971 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 15 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:22:01,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 416 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:22:01,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2021-12-07 00:22:01,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 937. [2021-12-07 00:22:01,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 936 states have (on average 1.5053418803418803) internal successors, (1409), 936 states have internal predecessors, (1409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:22:01,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1409 transitions. [2021-12-07 00:22:01,986 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1409 transitions. Word has length 141 [2021-12-07 00:22:01,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:22:01,986 INFO L470 AbstractCegarLoop]: Abstraction has 937 states and 1409 transitions. [2021-12-07 00:22:01,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:22:01,987 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1409 transitions. [2021-12-07 00:22:01,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-07 00:22:01,988 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:22:01,988 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2021-12-07 00:22:01,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-07 00:22:01,988 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:22:01,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:22:01,989 INFO L85 PathProgramCache]: Analyzing trace with hash -199249021, now seen corresponding path program 1 times [2021-12-07 00:22:01,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:22:01,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406612273] [2021-12-07 00:22:01,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:22:01,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:22:02,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:22:02,050 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-12-07 00:22:02,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:22:02,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406612273] [2021-12-07 00:22:02,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406612273] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:22:02,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:22:02,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:22:02,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127976890] [2021-12-07 00:22:02,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:22:02,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:22:02,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:22:02,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:22:02,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:22:02,052 INFO L87 Difference]: Start difference. First operand 937 states and 1409 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 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) [2021-12-07 00:22:02,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:22:02,079 INFO L93 Difference]: Finished difference Result 1855 states and 2796 transitions. [2021-12-07 00:22:02,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:22:02,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 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 141 [2021-12-07 00:22:02,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:22:02,085 INFO L225 Difference]: With dead ends: 1855 [2021-12-07 00:22:02,085 INFO L226 Difference]: Without dead ends: 939 [2021-12-07 00:22:02,086 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 [2021-12-07 00:22:02,086 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 4 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:22:02,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 395 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:22:02,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2021-12-07 00:22:02,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 939. [2021-12-07 00:22:02,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 939 states, 938 states have (on average 1.504264392324094) internal successors, (1411), 938 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:22:02,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 939 states to 939 states and 1411 transitions. [2021-12-07 00:22:02,108 INFO L78 Accepts]: Start accepts. Automaton has 939 states and 1411 transitions. Word has length 141 [2021-12-07 00:22:02,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:22:02,108 INFO L470 AbstractCegarLoop]: Abstraction has 939 states and 1411 transitions. [2021-12-07 00:22:02,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 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) [2021-12-07 00:22:02,108 INFO L276 IsEmpty]: Start isEmpty. Operand 939 states and 1411 transitions. [2021-12-07 00:22:02,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-07 00:22:02,110 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:22:02,110 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2021-12-07 00:22:02,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-07 00:22:02,110 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:22:02,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:22:02,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1694375453, now seen corresponding path program 1 times [2021-12-07 00:22:02,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:22:02,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831053389] [2021-12-07 00:22:02,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:22:02,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:22:02,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:22:02,200 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-12-07 00:22:02,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:22:02,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831053389] [2021-12-07 00:22:02,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831053389] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:22:02,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:22:02,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:22:02,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045558605] [2021-12-07 00:22:02,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:22:02,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:22:02,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:22:02,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:22:02,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:22:02,202 INFO L87 Difference]: Start difference. First operand 939 states and 1411 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:22:02,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:22:02,259 INFO L93 Difference]: Finished difference Result 2298 states and 3475 transitions. [2021-12-07 00:22:02,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:22:02,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2021-12-07 00:22:02,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:22:02,267 INFO L225 Difference]: With dead ends: 2298 [2021-12-07 00:22:02,267 INFO L226 Difference]: Without dead ends: 1382 [2021-12-07 00:22:02,268 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 [2021-12-07 00:22:02,268 INFO L933 BasicCegarLoop]: 387 mSDtfsCounter, 150 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:22:02,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 576 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:22:02,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2021-12-07 00:22:02,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1382. [2021-12-07 00:22:02,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1382 states, 1381 states have (on average 1.5047067342505431) internal successors, (2078), 1381 states have internal predecessors, (2078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:22:02,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 2078 transitions. [2021-12-07 00:22:02,296 INFO L78 Accepts]: Start accepts. Automaton has 1382 states and 2078 transitions. Word has length 143 [2021-12-07 00:22:02,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:22:02,296 INFO L470 AbstractCegarLoop]: Abstraction has 1382 states and 2078 transitions. [2021-12-07 00:22:02,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:22:02,296 INFO L276 IsEmpty]: Start isEmpty. Operand 1382 states and 2078 transitions. [2021-12-07 00:22:02,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-12-07 00:22:02,298 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:22:02,298 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 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] [2021-12-07 00:22:02,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-07 00:22:02,298 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:22:02,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:22:02,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1592335477, now seen corresponding path program 1 times [2021-12-07 00:22:02,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:22:02,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773960166] [2021-12-07 00:22:02,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:22:02,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:22:02,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:22:02,384 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-12-07 00:22:02,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:22:02,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773960166] [2021-12-07 00:22:02,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773960166] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:22:02,385 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:22:02,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:22:02,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232117185] [2021-12-07 00:22:02,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:22:02,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:22:02,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:22:02,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:22:02,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:22:02,386 INFO L87 Difference]: Start difference. First operand 1382 states and 2078 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:22:03,851 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:22:04,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:22:04,088 INFO L93 Difference]: Finished difference Result 2894 states and 4357 transitions. [2021-12-07 00:22:04,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:22:04,089 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2021-12-07 00:22:04,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:22:04,094 INFO L225 Difference]: With dead ends: 2894 [2021-12-07 00:22:04,094 INFO L226 Difference]: Without dead ends: 1535 [2021-12-07 00:22:04,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:22:04,096 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 42 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-07 00:22:04,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 611 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-07 00:22:04,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1535 states. [2021-12-07 00:22:04,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1535 to 1466. [2021-12-07 00:22:04,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1466 states, 1465 states have (on average 1.5064846416382252) internal successors, (2207), 1465 states have internal predecessors, (2207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:22:04,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1466 states to 1466 states and 2207 transitions. [2021-12-07 00:22:04,117 INFO L78 Accepts]: Start accepts. Automaton has 1466 states and 2207 transitions. Word has length 172 [2021-12-07 00:22:04,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:22:04,117 INFO L470 AbstractCegarLoop]: Abstraction has 1466 states and 2207 transitions. [2021-12-07 00:22:04,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:22:04,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1466 states and 2207 transitions. [2021-12-07 00:22:04,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-12-07 00:22:04,119 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:22:04,119 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 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] [2021-12-07 00:22:04,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-07 00:22:04,119 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:22:04,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:22:04,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1996367824, now seen corresponding path program 1 times [2021-12-07 00:22:04,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:22:04,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63964980] [2021-12-07 00:22:04,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:22:04,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:22:04,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:22:04,204 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 211 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2021-12-07 00:22:04,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:22:04,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63964980] [2021-12-07 00:22:04,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63964980] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:22:04,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:22:04,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:22:04,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356696249] [2021-12-07 00:22:04,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:22:04,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:22:04,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:22:04,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:22:04,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:22:04,205 INFO L87 Difference]: Start difference. First operand 1466 states and 2207 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 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) [2021-12-07 00:22:05,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:22:05,407 INFO L93 Difference]: Finished difference Result 3114 states and 4666 transitions. [2021-12-07 00:22:05,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:22:05,408 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 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 186 [2021-12-07 00:22:05,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:22:05,421 INFO L225 Difference]: With dead ends: 3114 [2021-12-07 00:22:05,421 INFO L226 Difference]: Without dead ends: 1671 [2021-12-07 00:22:05,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:22:05,422 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 137 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:22:05,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 372 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-07 00:22:05,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1671 states. [2021-12-07 00:22:05,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1671 to 1466. [2021-12-07 00:22:05,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1466 states, 1465 states have (on average 1.4921501706484641) internal successors, (2186), 1465 states have internal predecessors, (2186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:22:05,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1466 states to 1466 states and 2186 transitions. [2021-12-07 00:22:05,445 INFO L78 Accepts]: Start accepts. Automaton has 1466 states and 2186 transitions. Word has length 186 [2021-12-07 00:22:05,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:22:05,446 INFO L470 AbstractCegarLoop]: Abstraction has 1466 states and 2186 transitions. [2021-12-07 00:22:05,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 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) [2021-12-07 00:22:05,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1466 states and 2186 transitions. [2021-12-07 00:22:05,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-12-07 00:22:05,448 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:22:05,448 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 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] [2021-12-07 00:22:05,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-07 00:22:05,448 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:22:05,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:22:05,448 INFO L85 PathProgramCache]: Analyzing trace with hash 519444691, now seen corresponding path program 1 times [2021-12-07 00:22:05,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:22:05,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723093564] [2021-12-07 00:22:05,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:22:05,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:22:05,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:22:05,577 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 252 proven. 38 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-12-07 00:22:05,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:22:05,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723093564] [2021-12-07 00:22:05,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723093564] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:22:05,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410821976] [2021-12-07 00:22:05,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:22:05,578 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:22:05,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718fe473-3634-4357-b644-7a6e515f14d5/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:22:05,578 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718fe473-3634-4357-b644-7a6e515f14d5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:22:05,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718fe473-3634-4357-b644-7a6e515f14d5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-07 00:22:05,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:22:05,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 1182 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:22:05,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:22:06,175 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-12-07 00:22:06,175 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:22:06,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410821976] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:22:06,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:22:06,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-12-07 00:22:06,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709228929] [2021-12-07 00:22:06,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:22:06,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:22:06,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:22:06,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:22:06,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:22:06,177 INFO L87 Difference]: Start difference. First operand 1466 states and 2186 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:22:06,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:22:06,231 INFO L93 Difference]: Finished difference Result 3381 states and 5062 transitions. [2021-12-07 00:22:06,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:22:06,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 194 [2021-12-07 00:22:06,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:22:06,238 INFO L225 Difference]: With dead ends: 3381 [2021-12-07 00:22:06,238 INFO L226 Difference]: Without dead ends: 1938 [2021-12-07 00:22:06,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:22:06,240 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 157 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:22:06,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 378 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:22:06,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1938 states. [2021-12-07 00:22:06,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1938 to 1938. [2021-12-07 00:22:06,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1938 states, 1937 states have (on average 1.4945792462570986) internal successors, (2895), 1937 states have internal predecessors, (2895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:22:06,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1938 states to 1938 states and 2895 transitions. [2021-12-07 00:22:06,278 INFO L78 Accepts]: Start accepts. Automaton has 1938 states and 2895 transitions. Word has length 194 [2021-12-07 00:22:06,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:22:06,279 INFO L470 AbstractCegarLoop]: Abstraction has 1938 states and 2895 transitions. [2021-12-07 00:22:06,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:22:06,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1938 states and 2895 transitions. [2021-12-07 00:22:06,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-12-07 00:22:06,281 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:22:06,281 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 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] [2021-12-07 00:22:06,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718fe473-3634-4357-b644-7a6e515f14d5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-07 00:22:06,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718fe473-3634-4357-b644-7a6e515f14d5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:22:06,482 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:22:06,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:22:06,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1867638988, now seen corresponding path program 1 times [2021-12-07 00:22:06,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:22:06,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306930525] [2021-12-07 00:22:06,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:22:06,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:22:06,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:22:06,604 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2021-12-07 00:22:06,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:22:06,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306930525] [2021-12-07 00:22:06,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306930525] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:22:06,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:22:06,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:22:06,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68516146] [2021-12-07 00:22:06,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:22:06,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:22:06,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:22:06,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:22:06,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:22:06,616 INFO L87 Difference]: Start difference. First operand 1938 states and 2895 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) [2021-12-07 00:22:06,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:22:06,670 INFO L93 Difference]: Finished difference Result 4325 states and 6480 transitions. [2021-12-07 00:22:06,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:22:06,670 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 196 [2021-12-07 00:22:06,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:22:06,679 INFO L225 Difference]: With dead ends: 4325 [2021-12-07 00:22:06,679 INFO L226 Difference]: Without dead ends: 2410 [2021-12-07 00:22:06,681 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 [2021-12-07 00:22:06,681 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 157 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:22:06,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 377 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:22:06,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2410 states. [2021-12-07 00:22:06,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2410 to 2410. [2021-12-07 00:22:06,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2410 states, 2409 states have (on average 1.4964715649647156) internal successors, (3605), 2409 states have internal predecessors, (3605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:22:06,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2410 states to 2410 states and 3605 transitions. [2021-12-07 00:22:06,719 INFO L78 Accepts]: Start accepts. Automaton has 2410 states and 3605 transitions. Word has length 196 [2021-12-07 00:22:06,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:22:06,720 INFO L470 AbstractCegarLoop]: Abstraction has 2410 states and 3605 transitions. [2021-12-07 00:22:06,720 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) [2021-12-07 00:22:06,720 INFO L276 IsEmpty]: Start isEmpty. Operand 2410 states and 3605 transitions. [2021-12-07 00:22:06,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-12-07 00:22:06,723 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:22:06,723 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 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] [2021-12-07 00:22:06,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-07 00:22:06,723 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:22:06,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:22:06,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1420264172, now seen corresponding path program 1 times [2021-12-07 00:22:06,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:22:06,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201099244] [2021-12-07 00:22:06,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:22:06,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:22:06,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:22:06,824 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 271 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-12-07 00:22:06,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:22:06,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201099244] [2021-12-07 00:22:06,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201099244] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:22:06,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:22:06,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:22:06,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149678963] [2021-12-07 00:22:06,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:22:06,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:22:06,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:22:06,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:22:06,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:22:06,826 INFO L87 Difference]: Start difference. First operand 2410 states and 3605 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:22:06,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:22:06,899 INFO L93 Difference]: Finished difference Result 5269 states and 7900 transitions. [2021-12-07 00:22:06,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:22:06,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 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 235 [2021-12-07 00:22:06,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:22:06,911 INFO L225 Difference]: With dead ends: 5269 [2021-12-07 00:22:06,911 INFO L226 Difference]: Without dead ends: 2882 [2021-12-07 00:22:06,914 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 [2021-12-07 00:22:06,914 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 161 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:22:06,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 376 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:22:06,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2882 states. [2021-12-07 00:22:06,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2882 to 2882. [2021-12-07 00:22:06,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2882 states, 2881 states have (on average 1.498090940645609) internal successors, (4316), 2881 states have internal predecessors, (4316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:22:06,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2882 states to 2882 states and 4316 transitions. [2021-12-07 00:22:06,976 INFO L78 Accepts]: Start accepts. Automaton has 2882 states and 4316 transitions. Word has length 235 [2021-12-07 00:22:06,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:22:06,976 INFO L470 AbstractCegarLoop]: Abstraction has 2882 states and 4316 transitions. [2021-12-07 00:22:06,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:22:06,977 INFO L276 IsEmpty]: Start isEmpty. Operand 2882 states and 4316 transitions. [2021-12-07 00:22:06,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-12-07 00:22:06,981 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:22:06,981 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 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] [2021-12-07 00:22:06,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-07 00:22:06,981 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:22:06,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:22:06,982 INFO L85 PathProgramCache]: Analyzing trace with hash -390648618, now seen corresponding path program 1 times [2021-12-07 00:22:06,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:22:06,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843796501] [2021-12-07 00:22:06,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:22:06,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:22:07,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:22:07,119 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 271 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-12-07 00:22:07,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:22:07,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843796501] [2021-12-07 00:22:07,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843796501] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:22:07,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:22:07,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:22:07,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757381543] [2021-12-07 00:22:07,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:22:07,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:22:07,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:22:07,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:22:07,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:22:07,121 INFO L87 Difference]: Start difference. First operand 2882 states and 4316 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:22:07,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:22:07,193 INFO L93 Difference]: Finished difference Result 6213 states and 9322 transitions. [2021-12-07 00:22:07,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:22:07,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 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 237 [2021-12-07 00:22:07,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:22:07,200 INFO L225 Difference]: With dead ends: 6213 [2021-12-07 00:22:07,200 INFO L226 Difference]: Without dead ends: 3354 [2021-12-07 00:22:07,202 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 [2021-12-07 00:22:07,203 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 162 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:22:07,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 375 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:22:07,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3354 states. [2021-12-07 00:22:07,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3354 to 3354. [2021-12-07 00:22:07,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3354 states, 3353 states have (on average 1.4995526394273784) internal successors, (5028), 3353 states have internal predecessors, (5028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:22:07,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3354 states to 3354 states and 5028 transitions. [2021-12-07 00:22:07,268 INFO L78 Accepts]: Start accepts. Automaton has 3354 states and 5028 transitions. Word has length 237 [2021-12-07 00:22:07,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:22:07,269 INFO L470 AbstractCegarLoop]: Abstraction has 3354 states and 5028 transitions. [2021-12-07 00:22:07,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:22:07,269 INFO L276 IsEmpty]: Start isEmpty. Operand 3354 states and 5028 transitions. [2021-12-07 00:22:07,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-12-07 00:22:07,275 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:22:07,275 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:22:07,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-12-07 00:22:07,276 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:22:07,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:22:07,276 INFO L85 PathProgramCache]: Analyzing trace with hash -746542110, now seen corresponding path program 1 times [2021-12-07 00:22:07,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:22:07,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554668119] [2021-12-07 00:22:07,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:22:07,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:22:07,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:22:07,416 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2021-12-07 00:22:07,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:22:07,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554668119] [2021-12-07 00:22:07,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554668119] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:22:07,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:22:07,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:22:07,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236216856] [2021-12-07 00:22:07,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:22:07,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:22:07,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:22:07,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:22:07,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:22:07,417 INFO L87 Difference]: Start difference. First operand 3354 states and 5028 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:22:07,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:22:07,479 INFO L93 Difference]: Finished difference Result 7152 states and 10739 transitions. [2021-12-07 00:22:07,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:22:07,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 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 269 [2021-12-07 00:22:07,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:22:07,494 INFO L225 Difference]: With dead ends: 7152 [2021-12-07 00:22:07,494 INFO L226 Difference]: Without dead ends: 3821 [2021-12-07 00:22:07,496 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 [2021-12-07 00:22:07,496 INFO L933 BasicCegarLoop]: 386 mSDtfsCounter, 146 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:22:07,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 575 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:22:07,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3821 states. [2021-12-07 00:22:07,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3821 to 3821. [2021-12-07 00:22:07,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3821 states, 3820 states have (on average 1.4989528795811518) internal successors, (5726), 3820 states have internal predecessors, (5726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:22:07,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3821 states to 3821 states and 5726 transitions. [2021-12-07 00:22:07,574 INFO L78 Accepts]: Start accepts. Automaton has 3821 states and 5726 transitions. Word has length 269 [2021-12-07 00:22:07,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:22:07,574 INFO L470 AbstractCegarLoop]: Abstraction has 3821 states and 5726 transitions. [2021-12-07 00:22:07,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:22:07,574 INFO L276 IsEmpty]: Start isEmpty. Operand 3821 states and 5726 transitions. [2021-12-07 00:22:07,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-12-07 00:22:07,580 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:22:07,580 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:22:07,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-12-07 00:22:07,580 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:22:07,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:22:07,580 INFO L85 PathProgramCache]: Analyzing trace with hash -2118349408, now seen corresponding path program 1 times [2021-12-07 00:22:07,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:22:07,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720241214] [2021-12-07 00:22:07,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:22:07,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:22:07,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:22:07,717 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 330 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2021-12-07 00:22:07,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:22:07,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720241214] [2021-12-07 00:22:07,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720241214] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:22:07,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:22:07,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:22:07,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598665589] [2021-12-07 00:22:07,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:22:07,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:22:07,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:22:07,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:22:07,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:22:07,719 INFO L87 Difference]: Start difference. First operand 3821 states and 5726 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:22:07,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:22:07,784 INFO L93 Difference]: Finished difference Result 8058 states and 12093 transitions. [2021-12-07 00:22:07,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:22:07,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 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 269 [2021-12-07 00:22:07,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:22:07,790 INFO L225 Difference]: With dead ends: 8058 [2021-12-07 00:22:07,791 INFO L226 Difference]: Without dead ends: 4260 [2021-12-07 00:22:07,794 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 [2021-12-07 00:22:07,794 INFO L933 BasicCegarLoop]: 389 mSDtfsCounter, 152 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:22:07,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 578 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:22:07,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4260 states. [2021-12-07 00:22:07,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4260 to 4260. [2021-12-07 00:22:07,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4260 states, 4259 states have (on average 1.4982390232448932) internal successors, (6381), 4259 states have internal predecessors, (6381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:22:07,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4260 states to 4260 states and 6381 transitions. [2021-12-07 00:22:07,854 INFO L78 Accepts]: Start accepts. Automaton has 4260 states and 6381 transitions. Word has length 269 [2021-12-07 00:22:07,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:22:07,854 INFO L470 AbstractCegarLoop]: Abstraction has 4260 states and 6381 transitions. [2021-12-07 00:22:07,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:22:07,854 INFO L276 IsEmpty]: Start isEmpty. Operand 4260 states and 6381 transitions. [2021-12-07 00:22:07,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2021-12-07 00:22:07,859 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:22:07,860 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:22:07,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-12-07 00:22:07,860 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:22:07,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:22:07,860 INFO L85 PathProgramCache]: Analyzing trace with hash -113807666, now seen corresponding path program 1 times [2021-12-07 00:22:07,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:22:07,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600948439] [2021-12-07 00:22:07,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:22:07,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:22:07,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:22:08,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1161 backedges. 434 proven. 0 refuted. 0 times theorem prover too weak. 727 trivial. 0 not checked. [2021-12-07 00:22:08,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:22:08,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600948439] [2021-12-07 00:22:08,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600948439] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:22:08,010 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:22:08,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:22:08,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091131397] [2021-12-07 00:22:08,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:22:08,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:22:08,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:22:08,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:22:08,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:22:08,011 INFO L87 Difference]: Start difference. First operand 4260 states and 6381 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:22:08,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:22:08,080 INFO L93 Difference]: Finished difference Result 8969 states and 13452 transitions. [2021-12-07 00:22:08,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:22:08,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 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 344 [2021-12-07 00:22:08,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:22:08,087 INFO L225 Difference]: With dead ends: 8969 [2021-12-07 00:22:08,087 INFO L226 Difference]: Without dead ends: 4732 [2021-12-07 00:22:08,091 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 [2021-12-07 00:22:08,091 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 154 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:22:08,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 372 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:22:08,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4732 states. [2021-12-07 00:22:08,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4732 to 4732. [2021-12-07 00:22:08,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4732 states, 4731 states have (on average 1.4998943140984993) internal successors, (7096), 4731 states have internal predecessors, (7096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:22:08,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4732 states to 4732 states and 7096 transitions. [2021-12-07 00:22:08,172 INFO L78 Accepts]: Start accepts. Automaton has 4732 states and 7096 transitions. Word has length 344 [2021-12-07 00:22:08,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:22:08,172 INFO L470 AbstractCegarLoop]: Abstraction has 4732 states and 7096 transitions. [2021-12-07 00:22:08,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:22:08,172 INFO L276 IsEmpty]: Start isEmpty. Operand 4732 states and 7096 transitions. [2021-12-07 00:22:08,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2021-12-07 00:22:08,178 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:22:08,178 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 3, 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] [2021-12-07 00:22:08,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-12-07 00:22:08,179 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:22:08,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:22:08,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1102282041, now seen corresponding path program 1 times [2021-12-07 00:22:08,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:22:08,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147228204] [2021-12-07 00:22:08,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:22:08,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:22:08,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:22:08,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1443 backedges. 501 proven. 0 refuted. 0 times theorem prover too weak. 942 trivial. 0 not checked. [2021-12-07 00:22:08,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:22:08,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147228204] [2021-12-07 00:22:08,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147228204] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:22:08,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:22:08,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:22:08,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737245664] [2021-12-07 00:22:08,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:22:08,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:22:08,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:22:08,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:22:08,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:22:08,321 INFO L87 Difference]: Start difference. First operand 4732 states and 7096 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:22:08,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:22:08,401 INFO L93 Difference]: Finished difference Result 5206 states and 7814 transitions. [2021-12-07 00:22:08,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:22:08,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 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 385 [2021-12-07 00:22:08,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:22:08,408 INFO L225 Difference]: With dead ends: 5206 [2021-12-07 00:22:08,408 INFO L226 Difference]: Without dead ends: 5204 [2021-12-07 00:22:08,409 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 [2021-12-07 00:22:08,410 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 155 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:22:08,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 371 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:22:08,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5204 states. [2021-12-07 00:22:08,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5204 to 5204. [2021-12-07 00:22:08,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5204 states, 5203 states have (on average 1.5014414760714971) internal successors, (7812), 5203 states have internal predecessors, (7812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:22:08,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5204 states to 5204 states and 7812 transitions. [2021-12-07 00:22:08,508 INFO L78 Accepts]: Start accepts. Automaton has 5204 states and 7812 transitions. Word has length 385 [2021-12-07 00:22:08,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:22:08,508 INFO L470 AbstractCegarLoop]: Abstraction has 5204 states and 7812 transitions. [2021-12-07 00:22:08,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:22:08,508 INFO L276 IsEmpty]: Start isEmpty. Operand 5204 states and 7812 transitions. [2021-12-07 00:22:08,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2021-12-07 00:22:08,517 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:22:08,517 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 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] [2021-12-07 00:22:08,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-12-07 00:22:08,517 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:22:08,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:22:08,517 INFO L85 PathProgramCache]: Analyzing trace with hash -904105078, now seen corresponding path program 1 times [2021-12-07 00:22:08,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:22:08,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597607561] [2021-12-07 00:22:08,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:22:08,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:22:08,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:22:08,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 717 proven. 0 refuted. 0 times theorem prover too weak. 728 trivial. 0 not checked. [2021-12-07 00:22:08,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:22:08,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597607561] [2021-12-07 00:22:08,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597607561] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:22:08,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:22:08,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:22:08,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514036592] [2021-12-07 00:22:08,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:22:08,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:22:08,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:22:08,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:22:08,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:22:08,709 INFO L87 Difference]: Start difference. First operand 5204 states and 7812 transitions. Second operand has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:22:10,507 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:22:10,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:22:10,860 INFO L93 Difference]: Finished difference Result 11286 states and 16902 transitions. [2021-12-07 00:22:10,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:22:10,860 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 0 states have call successors, (0), 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 392 [2021-12-07 00:22:10,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:22:10,867 INFO L225 Difference]: With dead ends: 11286 [2021-12-07 00:22:10,867 INFO L226 Difference]: Without dead ends: 6105 [2021-12-07 00:22:10,872 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 [2021-12-07 00:22:10,872 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 69 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:22:10,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 659 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-07 00:22:10,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6105 states. [2021-12-07 00:22:10,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6105 to 5655. [2021-12-07 00:22:10,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5655 states, 5654 states have (on average 1.5022992571630704) internal successors, (8494), 5654 states have internal predecessors, (8494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:22:10,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5655 states to 5655 states and 8494 transitions. [2021-12-07 00:22:10,990 INFO L78 Accepts]: Start accepts. Automaton has 5655 states and 8494 transitions. Word has length 392 [2021-12-07 00:22:10,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:22:10,990 INFO L470 AbstractCegarLoop]: Abstraction has 5655 states and 8494 transitions. [2021-12-07 00:22:10,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:22:10,990 INFO L276 IsEmpty]: Start isEmpty. Operand 5655 states and 8494 transitions. [2021-12-07 00:22:10,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2021-12-07 00:22:10,998 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:22:10,999 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 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] [2021-12-07 00:22:10,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-12-07 00:22:10,999 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:22:10,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:22:10,999 INFO L85 PathProgramCache]: Analyzing trace with hash 42932808, now seen corresponding path program 1 times [2021-12-07 00:22:10,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:22:10,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905846056] [2021-12-07 00:22:10,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:22:11,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:22:11,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:22:11,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1445 trivial. 0 not checked. [2021-12-07 00:22:11,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:22:11,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905846056] [2021-12-07 00:22:11,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905846056] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:22:11,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:22:11,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:22:11,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020575686] [2021-12-07 00:22:11,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:22:11,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:22:11,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:22:11,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:22:11,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:22:11,467 INFO L87 Difference]: Start difference. First operand 5655 states and 8494 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:22:13,315 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:22:15,340 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:22:15,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:22:15,670 INFO L93 Difference]: Finished difference Result 11307 states and 16984 transitions. [2021-12-07 00:22:15,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:22:15,671 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 392 [2021-12-07 00:22:15,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:22:15,676 INFO L225 Difference]: With dead ends: 11307 [2021-12-07 00:22:15,676 INFO L226 Difference]: Without dead ends: 5655 [2021-12-07 00:22:15,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:22:15,680 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 7 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:22:15,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 695 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 167 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2021-12-07 00:22:15,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5655 states. [2021-12-07 00:22:15,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5655 to 5655. [2021-12-07 00:22:15,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5655 states, 5654 states have (on average 1.5021223912274495) internal successors, (8493), 5654 states have internal predecessors, (8493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:22:15,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5655 states to 5655 states and 8493 transitions. [2021-12-07 00:22:15,783 INFO L78 Accepts]: Start accepts. Automaton has 5655 states and 8493 transitions. Word has length 392 [2021-12-07 00:22:15,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:22:15,783 INFO L470 AbstractCegarLoop]: Abstraction has 5655 states and 8493 transitions. [2021-12-07 00:22:15,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:22:15,784 INFO L276 IsEmpty]: Start isEmpty. Operand 5655 states and 8493 transitions. [2021-12-07 00:22:15,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2021-12-07 00:22:15,791 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:22:15,791 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 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] [2021-12-07 00:22:15,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-12-07 00:22:15,792 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:22:15,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:22:15,792 INFO L85 PathProgramCache]: Analyzing trace with hash -729601146, now seen corresponding path program 1 times [2021-12-07 00:22:15,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:22:15,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341623292] [2021-12-07 00:22:15,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:22:15,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:22:16,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:22:17,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 228 proven. 1098 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2021-12-07 00:22:17,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:22:17,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341623292] [2021-12-07 00:22:17,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341623292] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:22:17,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939312887] [2021-12-07 00:22:17,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:22:17,970 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:22:17,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718fe473-3634-4357-b644-7a6e515f14d5/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:22:17,970 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718fe473-3634-4357-b644-7a6e515f14d5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:22:17,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718fe473-3634-4357-b644-7a6e515f14d5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-07 00:22:18,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:22:18,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 1965 conjuncts, 305 conjunts are in the unsatisfiable core [2021-12-07 00:22:18,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:22:19,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:22:19,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:22:19,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:22:19,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:22:19,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:22:19,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:22:19,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:22:19,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:22:19,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:22:19,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:25:52,591 WARN L227 SmtUtils]: Spent 3.55m on a formula simplification. DAG size of input: 100 DAG size of output: 37 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-12-07 00:25:52,592 INFO L354 Elim1Store]: treesize reduction 320, result has 18.4 percent of original size [2021-12-07 00:25:52,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 7 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 12 new quantified variables, introduced 13 case distinctions, treesize of input 1209803529361 treesize of output 1166738371334