./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product26.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f7337-6082-4401-91f6-4ab0e1315046/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f7337-6082-4401-91f6-4ab0e1315046/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f7337-6082-4401-91f6-4ab0e1315046/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f7337-6082-4401-91f6-4ab0e1315046/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product26.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f7337-6082-4401-91f6-4ab0e1315046/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f7337-6082-4401-91f6-4ab0e1315046/bin/uautomizer-w2VwFs6gM0 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2b84cfef0f3fa5659093b8e6c2d8a82a1b18913f669c8d0a2efe9a0300cc4873 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:42:30,964 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:42:30,969 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:42:31,040 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:42:31,041 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:42:31,046 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:42:31,049 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:42:31,054 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:42:31,057 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:42:31,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:42:31,067 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:42:31,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:42:31,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:42:31,074 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:42:31,076 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:42:31,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:42:31,084 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:42:31,086 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:42:31,089 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:42:31,099 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:42:31,102 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:42:31,104 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:42:31,108 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:42:31,110 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:42:31,121 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:42:31,121 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:42:31,122 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:42:31,125 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:42:31,126 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:42:31,128 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:42:31,129 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:42:31,131 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:42:31,134 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:42:31,135 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:42:31,138 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:42:31,138 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:42:31,139 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:42:31,139 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:42:31,140 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:42:31,141 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:42:31,142 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:42:31,143 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f7337-6082-4401-91f6-4ab0e1315046/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 15:42:31,197 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:42:31,197 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:42:31,198 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:42:31,199 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:42:31,208 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:42:31,208 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:42:31,208 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:42:31,209 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:42:31,209 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:42:31,209 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:42:31,210 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:42:31,211 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:42:31,211 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 15:42:31,211 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:42:31,212 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 15:42:31,212 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:42:31,212 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:42:31,212 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:42:31,213 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 15:42:31,213 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:42:31,213 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:42:31,213 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:42:31,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:42:31,214 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:42:31,214 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:42:31,214 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 15:42:31,215 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:42:31,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 15:42:31,215 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 15:42:31,217 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 15:42:31,218 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 15:42:31,218 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:42:31,218 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_e08f7337-6082-4401-91f6-4ab0e1315046/bin/uautomizer-w2VwFs6gM0/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f7337-6082-4401-91f6-4ab0e1315046/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b84cfef0f3fa5659093b8e6c2d8a82a1b18913f669c8d0a2efe9a0300cc4873 [2021-11-22 15:42:31,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:42:31,623 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:42:31,626 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:42:31,628 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:42:31,629 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:42:31,631 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f7337-6082-4401-91f6-4ab0e1315046/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/product-lines/elevator_spec1_product26.cil.c [2021-11-22 15:42:31,716 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f7337-6082-4401-91f6-4ab0e1315046/bin/uautomizer-w2VwFs6gM0/data/3f6e62c58/6659a46f084f41f79660bca219aea5fa/FLAG8b6177448 [2021-11-22 15:42:32,653 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:42:32,654 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f7337-6082-4401-91f6-4ab0e1315046/sv-benchmarks/c/product-lines/elevator_spec1_product26.cil.c [2021-11-22 15:42:32,688 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f7337-6082-4401-91f6-4ab0e1315046/bin/uautomizer-w2VwFs6gM0/data/3f6e62c58/6659a46f084f41f79660bca219aea5fa/FLAG8b6177448 [2021-11-22 15:42:32,748 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f7337-6082-4401-91f6-4ab0e1315046/bin/uautomizer-w2VwFs6gM0/data/3f6e62c58/6659a46f084f41f79660bca219aea5fa [2021-11-22 15:42:32,751 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:42:32,753 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:42:32,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:42:32,758 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:42:32,762 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:42:32,763 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:42:32" (1/1) ... [2021-11-22 15:42:32,765 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c7e8185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:32, skipping insertion in model container [2021-11-22 15:42:32,765 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:42:32" (1/1) ... [2021-11-22 15:42:32,775 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:42:32,891 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:42:33,550 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_e08f7337-6082-4401-91f6-4ab0e1315046/sv-benchmarks/c/product-lines/elevator_spec1_product26.cil.c[55974,55987] [2021-11-22 15:42:33,603 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:42:33,629 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:42:33,769 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_e08f7337-6082-4401-91f6-4ab0e1315046/sv-benchmarks/c/product-lines/elevator_spec1_product26.cil.c[55974,55987] [2021-11-22 15:42:33,793 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:42:33,843 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:42:33,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:33 WrapperNode [2021-11-22 15:42:33,844 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:42:33,846 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:42:33,846 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:42:33,847 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:42:33,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:33" (1/1) ... [2021-11-22 15:42:33,893 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:33" (1/1) ... [2021-11-22 15:42:34,256 INFO L137 Inliner]: procedures = 93, calls = 341, calls flagged for inlining = 193, calls inlined = 544, statements flattened = 17347 [2021-11-22 15:42:34,256 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:42:34,258 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:42:34,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:42:34,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:42:34,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:33" (1/1) ... [2021-11-22 15:42:34,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:33" (1/1) ... [2021-11-22 15:42:34,325 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:33" (1/1) ... [2021-11-22 15:42:34,326 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:33" (1/1) ... [2021-11-22 15:42:34,597 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:33" (1/1) ... [2021-11-22 15:42:34,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:33" (1/1) ... [2021-11-22 15:42:34,743 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:33" (1/1) ... [2021-11-22 15:42:34,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:42:34,814 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:42:34,815 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:42:34,816 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:42:34,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:33" (1/1) ... [2021-11-22 15:42:34,831 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:42:34,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f7337-6082-4401-91f6-4ab0e1315046/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:42:34,870 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f7337-6082-4401-91f6-4ab0e1315046/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:42:34,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08f7337-6082-4401-91f6-4ab0e1315046/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:42:35,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:42:35,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 15:42:35,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:42:35,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:42:35,325 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:42:35,327 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:42:43,900 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:42:43,982 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:42:43,982 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-22 15:42:43,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:42:43 BoogieIcfgContainer [2021-11-22 15:42:43,993 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:42:43,995 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:42:43,996 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:42:44,000 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:42:44,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:42:32" (1/3) ... [2021-11-22 15:42:44,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12044579 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:42:44, skipping insertion in model container [2021-11-22 15:42:44,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:33" (2/3) ... [2021-11-22 15:42:44,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12044579 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:42:44, skipping insertion in model container [2021-11-22 15:42:44,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:42:43" (3/3) ... [2021-11-22 15:42:44,004 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product26.cil.c [2021-11-22 15:42:44,012 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:42:44,012 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-22 15:42:44,114 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:42:44,128 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-22 15:42:44,128 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-22 15:42:44,269 INFO L276 IsEmpty]: Start isEmpty. Operand has 4913 states, 4907 states have (on average 1.8712044018748726) internal successors, (9182), 4912 states have internal predecessors, (9182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:44,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-22 15:42:44,291 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:42:44,292 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:42:44,293 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:42:44,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:42:44,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1051802713, now seen corresponding path program 1 times [2021-11-22 15:42:44,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:42:44,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314573134] [2021-11-22 15:42:44,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:44,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:42:44,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:42:44,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:42:44,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:42:44,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314573134] [2021-11-22 15:42:44,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314573134] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:42:44,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:42:44,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:42:44,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926049730] [2021-11-22 15:42:44,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:42:44,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:42:44,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:42:44,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:42:44,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:42:44,786 INFO L87 Difference]: Start difference. First operand has 4913 states, 4907 states have (on average 1.8712044018748726) internal successors, (9182), 4912 states have internal predecessors, (9182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:45,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:42:45,505 INFO L93 Difference]: Finished difference Result 14644 states and 27386 transitions. [2021-11-22 15:42:45,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:42:45,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2021-11-22 15:42:45,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:42:45,610 INFO L225 Difference]: With dead ends: 14644 [2021-11-22 15:42:45,610 INFO L226 Difference]: Without dead ends: 9733 [2021-11-22 15:42:45,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:42:45,644 INFO L933 BasicCegarLoop]: 18199 mSDtfsCounter, 9142 mSDsluCounter, 9049 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9142 SdHoareTripleChecker+Valid, 27248 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:42:45,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9142 Valid, 27248 Invalid, 24 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:42:45,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9733 states. [2021-11-22 15:42:46,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9733 to 4902. [2021-11-22 15:42:46,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4902 states, 4897 states have (on average 1.8699203594037166) internal successors, (9157), 4901 states have internal predecessors, (9157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:46,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4902 states to 4902 states and 9157 transitions. [2021-11-22 15:42:46,154 INFO L78 Accepts]: Start accepts. Automaton has 4902 states and 9157 transitions. Word has length 46 [2021-11-22 15:42:46,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:42:46,155 INFO L470 AbstractCegarLoop]: Abstraction has 4902 states and 9157 transitions. [2021-11-22 15:42:46,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:46,157 INFO L276 IsEmpty]: Start isEmpty. Operand 4902 states and 9157 transitions. [2021-11-22 15:42:46,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-22 15:42:46,170 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:42:46,170 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:42:46,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 15:42:46,172 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:42:46,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:42:46,176 INFO L85 PathProgramCache]: Analyzing trace with hash -715605721, now seen corresponding path program 1 times [2021-11-22 15:42:46,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:42:46,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267759779] [2021-11-22 15:42:46,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:46,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:42:46,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:42:46,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:42:46,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:42:46,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267759779] [2021-11-22 15:42:46,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267759779] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:42:46,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:42:46,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 15:42:46,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428215300] [2021-11-22 15:42:46,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:42:46,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:42:46,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:42:46,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:42:46,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:42:46,429 INFO L87 Difference]: Start difference. First operand 4902 states and 9157 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:47,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:42:47,832 INFO L93 Difference]: Finished difference Result 19374 states and 36216 transitions. [2021-11-22 15:42:47,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 15:42:47,833 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2021-11-22 15:42:47,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:42:47,977 INFO L225 Difference]: With dead ends: 19374 [2021-11-22 15:42:47,977 INFO L226 Difference]: Without dead ends: 14516 [2021-11-22 15:42:47,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-22 15:42:47,996 INFO L933 BasicCegarLoop]: 9120 mSDtfsCounter, 63559 mSDsluCounter, 26997 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63559 SdHoareTripleChecker+Valid, 36117 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:42:47,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63559 Valid, 36117 Invalid, 57 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [11 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:42:48,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14516 states. [2021-11-22 15:42:48,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14516 to 4898. [2021-11-22 15:42:48,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4898 states, 4893 states have (on average 1.8692008992438176) internal successors, (9146), 4897 states have internal predecessors, (9146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:48,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4898 states to 4898 states and 9146 transitions. [2021-11-22 15:42:48,403 INFO L78 Accepts]: Start accepts. Automaton has 4898 states and 9146 transitions. Word has length 53 [2021-11-22 15:42:48,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:42:48,405 INFO L470 AbstractCegarLoop]: Abstraction has 4898 states and 9146 transitions. [2021-11-22 15:42:48,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:48,406 INFO L276 IsEmpty]: Start isEmpty. Operand 4898 states and 9146 transitions. [2021-11-22 15:42:48,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-22 15:42:48,412 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:42:48,413 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:42:48,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 15:42:48,415 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:42:48,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:42:48,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1028516299, now seen corresponding path program 1 times [2021-11-22 15:42:48,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:42:48,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326098895] [2021-11-22 15:42:48,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:48,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:42:48,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:42:48,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:42:48,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:42:48,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326098895] [2021-11-22 15:42:48,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326098895] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:42:48,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:42:48,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:42:48,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556906041] [2021-11-22 15:42:48,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:42:48,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:42:48,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:42:48,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:42:48,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:42:48,545 INFO L87 Difference]: Start difference. First operand 4898 states and 9146 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:49,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:42:49,475 INFO L93 Difference]: Finished difference Result 14577 states and 27242 transitions. [2021-11-22 15:42:49,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:42:49,476 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2021-11-22 15:42:49,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:42:49,512 INFO L225 Difference]: With dead ends: 14577 [2021-11-22 15:42:49,512 INFO L226 Difference]: Without dead ends: 9723 [2021-11-22 15:42:49,524 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 [2021-11-22 15:42:49,534 INFO L933 BasicCegarLoop]: 18004 mSDtfsCounter, 18219 mSDsluCounter, 8990 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18219 SdHoareTripleChecker+Valid, 26994 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:42:49,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18219 Valid, 26994 Invalid, 232 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:42:49,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9723 states. [2021-11-22 15:42:49,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9723 to 4898. [2021-11-22 15:42:49,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4898 states, 4893 states have (on average 1.8673615368894338) internal successors, (9137), 4897 states have internal predecessors, (9137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:49,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4898 states to 4898 states and 9137 transitions. [2021-11-22 15:42:49,956 INFO L78 Accepts]: Start accepts. Automaton has 4898 states and 9137 transitions. Word has length 55 [2021-11-22 15:42:49,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:42:49,957 INFO L470 AbstractCegarLoop]: Abstraction has 4898 states and 9137 transitions. [2021-11-22 15:42:49,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:49,958 INFO L276 IsEmpty]: Start isEmpty. Operand 4898 states and 9137 transitions. [2021-11-22 15:42:49,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-22 15:42:49,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:42:49,962 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:42:49,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 15:42:49,962 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:42:49,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:42:49,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1012051257, now seen corresponding path program 1 times [2021-11-22 15:42:49,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:42:49,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967084151] [2021-11-22 15:42:49,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:49,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:42:49,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:42:50,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:42:50,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:42:50,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967084151] [2021-11-22 15:42:50,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967084151] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:42:50,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:42:50,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:42:50,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977380540] [2021-11-22 15:42:50,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:42:50,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:42:50,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:42:50,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:42:50,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:42:50,028 INFO L87 Difference]: Start difference. First operand 4898 states and 9137 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:50,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:42:50,746 INFO L93 Difference]: Finished difference Result 14577 states and 27224 transitions. [2021-11-22 15:42:50,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:42:50,747 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-22 15:42:50,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:42:50,783 INFO L225 Difference]: With dead ends: 14577 [2021-11-22 15:42:50,783 INFO L226 Difference]: Without dead ends: 9723 [2021-11-22 15:42:50,794 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 [2021-11-22 15:42:50,796 INFO L933 BasicCegarLoop]: 18004 mSDtfsCounter, 18200 mSDsluCounter, 8990 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18200 SdHoareTripleChecker+Valid, 26994 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:42:50,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18200 Valid, 26994 Invalid, 214 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:42:50,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9723 states. [2021-11-22 15:42:51,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9723 to 4898. [2021-11-22 15:42:51,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4898 states, 4893 states have (on average 1.86552217453505) internal successors, (9128), 4897 states have internal predecessors, (9128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:51,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4898 states to 4898 states and 9128 transitions. [2021-11-22 15:42:51,218 INFO L78 Accepts]: Start accepts. Automaton has 4898 states and 9128 transitions. Word has length 57 [2021-11-22 15:42:51,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:42:51,219 INFO L470 AbstractCegarLoop]: Abstraction has 4898 states and 9128 transitions. [2021-11-22 15:42:51,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:51,219 INFO L276 IsEmpty]: Start isEmpty. Operand 4898 states and 9128 transitions. [2021-11-22 15:42:51,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-22 15:42:51,222 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:42:51,222 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:42:51,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 15:42:51,223 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:42:51,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:42:51,224 INFO L85 PathProgramCache]: Analyzing trace with hash -556596117, now seen corresponding path program 1 times [2021-11-22 15:42:51,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:42:51,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192412424] [2021-11-22 15:42:51,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:51,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:42:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:42:51,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:42:51,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:42:51,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192412424] [2021-11-22 15:42:51,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192412424] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:42:51,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:42:51,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:42:51,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095953019] [2021-11-22 15:42:51,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:42:51,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:42:51,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:42:51,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:42:51,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:42:51,290 INFO L87 Difference]: Start difference. First operand 4898 states and 9128 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) [2021-11-22 15:42:52,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:42:52,688 INFO L93 Difference]: Finished difference Result 24167 states and 45134 transitions. [2021-11-22 15:42:52,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:42:52,689 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 [2021-11-22 15:42:52,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:42:52,773 INFO L225 Difference]: With dead ends: 24167 [2021-11-22 15:42:52,774 INFO L226 Difference]: Without dead ends: 19313 [2021-11-22 15:42:52,789 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 [2021-11-22 15:42:52,790 INFO L933 BasicCegarLoop]: 35968 mSDtfsCounter, 18160 mSDsluCounter, 35921 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18160 SdHoareTripleChecker+Valid, 71889 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:42:52,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18160 Valid, 71889 Invalid, 182 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:42:52,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19313 states. [2021-11-22 15:42:53,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19313 to 4898. [2021-11-22 15:42:53,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4898 states, 4893 states have (on average 1.864704680155324) internal successors, (9124), 4897 states have internal predecessors, (9124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:53,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4898 states to 4898 states and 9124 transitions. [2021-11-22 15:42:53,284 INFO L78 Accepts]: Start accepts. Automaton has 4898 states and 9124 transitions. Word has length 59 [2021-11-22 15:42:53,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:42:53,284 INFO L470 AbstractCegarLoop]: Abstraction has 4898 states and 9124 transitions. [2021-11-22 15:42:53,284 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) [2021-11-22 15:42:53,286 INFO L276 IsEmpty]: Start isEmpty. Operand 4898 states and 9124 transitions. [2021-11-22 15:42:53,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-22 15:42:53,294 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:42:53,294 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:42:53,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 15:42:53,295 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:42:53,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:42:53,296 INFO L85 PathProgramCache]: Analyzing trace with hash 66582507, now seen corresponding path program 1 times [2021-11-22 15:42:53,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:42:53,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573807990] [2021-11-22 15:42:53,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:53,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:42:53,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:42:53,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:42:53,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:42:53,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573807990] [2021-11-22 15:42:53,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573807990] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:42:53,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:42:53,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:42:53,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337279290] [2021-11-22 15:42:53,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:42:53,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:42:53,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:42:53,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:42:53,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:42:53,376 INFO L87 Difference]: Start difference. First operand 4898 states and 9124 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) [2021-11-22 15:42:54,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:42:54,193 INFO L93 Difference]: Finished difference Result 19351 states and 36130 transitions. [2021-11-22 15:42:54,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:42:54,193 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 [2021-11-22 15:42:54,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:42:54,242 INFO L225 Difference]: With dead ends: 19351 [2021-11-22 15:42:54,242 INFO L226 Difference]: Without dead ends: 14476 [2021-11-22 15:42:54,253 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 [2021-11-22 15:42:54,254 INFO L933 BasicCegarLoop]: 18056 mSDtfsCounter, 18034 mSDsluCounter, 18057 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18034 SdHoareTripleChecker+Valid, 36113 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:42:54,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18034 Valid, 36113 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:42:54,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14476 states. [2021-11-22 15:42:54,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14476 to 4880. [2021-11-22 15:42:54,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4880 states, 4875 states have (on average 1.8652307692307692) internal successors, (9093), 4879 states have internal predecessors, (9093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:54,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4880 states to 4880 states and 9093 transitions. [2021-11-22 15:42:54,562 INFO L78 Accepts]: Start accepts. Automaton has 4880 states and 9093 transitions. Word has length 59 [2021-11-22 15:42:54,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:42:54,563 INFO L470 AbstractCegarLoop]: Abstraction has 4880 states and 9093 transitions. [2021-11-22 15:42:54,563 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) [2021-11-22 15:42:54,563 INFO L276 IsEmpty]: Start isEmpty. Operand 4880 states and 9093 transitions. [2021-11-22 15:42:54,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-22 15:42:54,565 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:42:54,565 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:42:54,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 15:42:54,566 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:42:54,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:42:54,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1414904299, now seen corresponding path program 1 times [2021-11-22 15:42:54,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:42:54,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70860985] [2021-11-22 15:42:54,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:54,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:42:54,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:42:54,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:42:54,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:42:54,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70860985] [2021-11-22 15:42:54,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70860985] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:42:54,620 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:42:54,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:42:54,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49809603] [2021-11-22 15:42:54,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:42:54,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:42:54,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:42:54,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:42:54,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:42:54,623 INFO L87 Difference]: Start difference. First operand 4880 states and 9093 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) [2021-11-22 15:42:55,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:42:55,255 INFO L93 Difference]: Finished difference Result 14541 states and 27137 transitions. [2021-11-22 15:42:55,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:42:55,256 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 [2021-11-22 15:42:55,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:42:55,287 INFO L225 Difference]: With dead ends: 14541 [2021-11-22 15:42:55,287 INFO L226 Difference]: Without dead ends: 9684 [2021-11-22 15:42:55,297 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 [2021-11-22 15:42:55,298 INFO L933 BasicCegarLoop]: 17990 mSDtfsCounter, 18075 mSDsluCounter, 8990 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18075 SdHoareTripleChecker+Valid, 26980 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:42:55,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18075 Valid, 26980 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:42:55,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9684 states. [2021-11-22 15:42:55,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9684 to 4880. [2021-11-22 15:42:55,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4880 states, 4875 states have (on average 1.864) internal successors, (9087), 4879 states have internal predecessors, (9087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:55,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4880 states to 4880 states and 9087 transitions. [2021-11-22 15:42:55,563 INFO L78 Accepts]: Start accepts. Automaton has 4880 states and 9087 transitions. Word has length 60 [2021-11-22 15:42:55,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:42:55,564 INFO L470 AbstractCegarLoop]: Abstraction has 4880 states and 9087 transitions. [2021-11-22 15:42:55,564 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) [2021-11-22 15:42:55,564 INFO L276 IsEmpty]: Start isEmpty. Operand 4880 states and 9087 transitions. [2021-11-22 15:42:55,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-22 15:42:55,566 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:42:55,567 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:42:55,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 15:42:55,567 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:42:55,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:42:55,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1119840454, now seen corresponding path program 1 times [2021-11-22 15:42:55,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:42:55,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077450053] [2021-11-22 15:42:55,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:55,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:42:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:42:55,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:42:55,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:42:55,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077450053] [2021-11-22 15:42:55,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077450053] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:42:55,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:42:55,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:42:55,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987276873] [2021-11-22 15:42:55,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:42:55,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:42:55,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:42:55,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:42:55,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:42:55,620 INFO L87 Difference]: Start difference. First operand 4880 states and 9087 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) [2021-11-22 15:42:56,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:42:56,221 INFO L93 Difference]: Finished difference Result 14541 states and 27125 transitions. [2021-11-22 15:42:56,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:42:56,222 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 [2021-11-22 15:42:56,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:42:56,257 INFO L225 Difference]: With dead ends: 14541 [2021-11-22 15:42:56,257 INFO L226 Difference]: Without dead ends: 9684 [2021-11-22 15:42:56,269 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 [2021-11-22 15:42:56,271 INFO L933 BasicCegarLoop]: 17990 mSDtfsCounter, 18065 mSDsluCounter, 8990 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18065 SdHoareTripleChecker+Valid, 26980 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:42:56,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18065 Valid, 26980 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:42:56,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9684 states. [2021-11-22 15:42:56,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9684 to 4880. [2021-11-22 15:42:56,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4880 states, 4875 states have (on average 1.8627692307692307) internal successors, (9081), 4879 states have internal predecessors, (9081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:56,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4880 states to 4880 states and 9081 transitions. [2021-11-22 15:42:56,645 INFO L78 Accepts]: Start accepts. Automaton has 4880 states and 9081 transitions. Word has length 61 [2021-11-22 15:42:56,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:42:56,646 INFO L470 AbstractCegarLoop]: Abstraction has 4880 states and 9081 transitions. [2021-11-22 15:42:56,646 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) [2021-11-22 15:42:56,647 INFO L276 IsEmpty]: Start isEmpty. Operand 4880 states and 9081 transitions. [2021-11-22 15:42:56,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-22 15:42:56,649 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:42:56,650 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:42:56,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-22 15:42:56,650 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:42:56,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:42:56,651 INFO L85 PathProgramCache]: Analyzing trace with hash -719238746, now seen corresponding path program 1 times [2021-11-22 15:42:56,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:42:56,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304320183] [2021-11-22 15:42:56,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:56,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:42:56,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:42:56,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:42:56,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:42:56,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304320183] [2021-11-22 15:42:56,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304320183] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:42:56,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:42:56,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 15:42:56,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115389096] [2021-11-22 15:42:56,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:42:56,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 15:42:56,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:42:56,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 15:42:56,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:42:56,769 INFO L87 Difference]: Start difference. First operand 4880 states and 9081 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 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) [2021-11-22 15:42:58,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:42:58,457 INFO L93 Difference]: Finished difference Result 24138 states and 45048 transitions. [2021-11-22 15:42:58,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 15:42:58,458 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 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 [2021-11-22 15:42:58,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:42:58,501 INFO L225 Difference]: With dead ends: 24138 [2021-11-22 15:42:58,501 INFO L226 Difference]: Without dead ends: 19287 [2021-11-22 15:42:58,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-11-22 15:42:58,514 INFO L933 BasicCegarLoop]: 9040 mSDtfsCounter, 81275 mSDsluCounter, 53825 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81275 SdHoareTripleChecker+Valid, 62865 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:42:58,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81275 Valid, 62865 Invalid, 110 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [21 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:42:58,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19287 states. [2021-11-22 15:42:58,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19287 to 4882. [2021-11-22 15:42:58,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4882 states, 4877 states have (on average 1.8622103752306747) internal successors, (9082), 4881 states have internal predecessors, (9082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:58,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4882 states to 4882 states and 9082 transitions. [2021-11-22 15:42:58,926 INFO L78 Accepts]: Start accepts. Automaton has 4882 states and 9082 transitions. Word has length 62 [2021-11-22 15:42:58,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:42:58,926 INFO L470 AbstractCegarLoop]: Abstraction has 4882 states and 9082 transitions. [2021-11-22 15:42:58,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 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) [2021-11-22 15:42:58,927 INFO L276 IsEmpty]: Start isEmpty. Operand 4882 states and 9082 transitions. [2021-11-22 15:42:58,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-22 15:42:58,929 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:42:58,930 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:42:58,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 15:42:58,930 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:42:58,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:42:58,931 INFO L85 PathProgramCache]: Analyzing trace with hash 171318146, now seen corresponding path program 1 times [2021-11-22 15:42:58,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:42:58,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943274508] [2021-11-22 15:42:58,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:58,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:42:58,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:42:59,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:42:59,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:42:59,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943274508] [2021-11-22 15:42:59,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943274508] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:42:59,011 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:42:59,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 15:42:59,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139045230] [2021-11-22 15:42:59,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:42:59,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 15:42:59,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:42:59,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 15:42:59,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:42:59,013 INFO L87 Difference]: Start difference. First operand 4882 states and 9082 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:00,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:43:00,332 INFO L93 Difference]: Finished difference Result 24128 states and 45025 transitions. [2021-11-22 15:43:00,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 15:43:00,333 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2021-11-22 15:43:00,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:43:00,364 INFO L225 Difference]: With dead ends: 24128 [2021-11-22 15:43:00,364 INFO L226 Difference]: Without dead ends: 19281 [2021-11-22 15:43:00,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-11-22 15:43:00,378 INFO L933 BasicCegarLoop]: 9039 mSDtfsCounter, 81260 mSDsluCounter, 53802 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81260 SdHoareTripleChecker+Valid, 62841 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:43:00,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81260 Valid, 62841 Invalid, 110 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [21 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:43:00,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19281 states. [2021-11-22 15:43:00,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19281 to 4888. [2021-11-22 15:43:00,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4888 states, 4883 states have (on average 1.8617653082121646) internal successors, (9091), 4887 states have internal predecessors, (9091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:00,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4888 states to 4888 states and 9091 transitions. [2021-11-22 15:43:00,847 INFO L78 Accepts]: Start accepts. Automaton has 4888 states and 9091 transitions. Word has length 64 [2021-11-22 15:43:00,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:43:00,848 INFO L470 AbstractCegarLoop]: Abstraction has 4888 states and 9091 transitions. [2021-11-22 15:43:00,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:00,848 INFO L276 IsEmpty]: Start isEmpty. Operand 4888 states and 9091 transitions. [2021-11-22 15:43:00,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-22 15:43:00,851 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:43:00,851 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:43:00,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-22 15:43:00,852 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:43:00,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:43:00,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1308377734, now seen corresponding path program 1 times [2021-11-22 15:43:00,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:43:00,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026811092] [2021-11-22 15:43:00,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:43:00,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:43:00,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:43:00,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:43:00,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:43:00,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026811092] [2021-11-22 15:43:00,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026811092] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:43:00,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:43:00,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:43:00,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018144362] [2021-11-22 15:43:00,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:43:00,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:43:00,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:43:00,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:43:00,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:43:00,937 INFO L87 Difference]: Start difference. First operand 4888 states and 9091 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:01,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:43:01,305 INFO L93 Difference]: Finished difference Result 9713 states and 18095 transitions. [2021-11-22 15:43:01,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:43:01,306 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-22 15:43:01,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:43:01,314 INFO L225 Difference]: With dead ends: 9713 [2021-11-22 15:43:01,314 INFO L226 Difference]: Without dead ends: 4866 [2021-11-22 15:43:01,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:43:01,324 INFO L933 BasicCegarLoop]: 9051 mSDtfsCounter, 9007 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9007 SdHoareTripleChecker+Valid, 9090 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:43:01,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9007 Valid, 9090 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:43:01,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4866 states. [2021-11-22 15:43:01,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4866 to 4866. [2021-11-22 15:43:01,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4866 states, 4861 states have (on average 1.8625797161077968) internal successors, (9054), 4865 states have internal predecessors, (9054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:01,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4866 states to 4866 states and 9054 transitions. [2021-11-22 15:43:01,720 INFO L78 Accepts]: Start accepts. Automaton has 4866 states and 9054 transitions. Word has length 66 [2021-11-22 15:43:01,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:43:01,721 INFO L470 AbstractCegarLoop]: Abstraction has 4866 states and 9054 transitions. [2021-11-22 15:43:01,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:01,721 INFO L276 IsEmpty]: Start isEmpty. Operand 4866 states and 9054 transitions. [2021-11-22 15:43:01,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-22 15:43:01,724 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:43:01,724 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:43:01,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-22 15:43:01,725 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:43:01,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:43:01,726 INFO L85 PathProgramCache]: Analyzing trace with hash 952559477, now seen corresponding path program 1 times [2021-11-22 15:43:01,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:43:01,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111247917] [2021-11-22 15:43:01,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:43:01,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:43:01,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:43:01,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:43:01,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:43:01,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111247917] [2021-11-22 15:43:01,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111247917] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:43:01,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:43:01,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:43:01,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214936783] [2021-11-22 15:43:01,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:43:01,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:43:01,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:43:01,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:43:01,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:43:01,835 INFO L87 Difference]: Start difference. First operand 4866 states and 9054 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:02,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:43:02,387 INFO L93 Difference]: Finished difference Result 9661 states and 18016 transitions. [2021-11-22 15:43:02,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:43:02,388 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-22 15:43:02,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:43:02,401 INFO L225 Difference]: With dead ends: 9661 [2021-11-22 15:43:02,401 INFO L226 Difference]: Without dead ends: 4860 [2021-11-22 15:43:02,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:43:02,412 INFO L933 BasicCegarLoop]: 9032 mSDtfsCounter, 26985 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26985 SdHoareTripleChecker+Valid, 9157 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:43:02,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26985 Valid, 9157 Invalid, 33 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:43:02,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4860 states. [2021-11-22 15:43:02,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4860 to 4860. [2021-11-22 15:43:02,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4860 states, 4855 states have (on average 1.86302780638517) internal successors, (9045), 4859 states have internal predecessors, (9045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:02,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4860 states to 4860 states and 9045 transitions. [2021-11-22 15:43:02,769 INFO L78 Accepts]: Start accepts. Automaton has 4860 states and 9045 transitions. Word has length 68 [2021-11-22 15:43:02,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:43:02,771 INFO L470 AbstractCegarLoop]: Abstraction has 4860 states and 9045 transitions. [2021-11-22 15:43:02,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:02,772 INFO L276 IsEmpty]: Start isEmpty. Operand 4860 states and 9045 transitions. [2021-11-22 15:43:02,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-22 15:43:02,775 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:43:02,775 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:43:02,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-22 15:43:02,775 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:43:02,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:43:02,776 INFO L85 PathProgramCache]: Analyzing trace with hash -753067275, now seen corresponding path program 1 times [2021-11-22 15:43:02,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:43:02,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650931297] [2021-11-22 15:43:02,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:43:02,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:43:02,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:43:02,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:43:02,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:43:02,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650931297] [2021-11-22 15:43:02,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650931297] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:43:02,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:43:02,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:43:02,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556092595] [2021-11-22 15:43:02,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:43:02,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:43:02,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:43:02,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:43:02,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:43:02,871 INFO L87 Difference]: Start difference. First operand 4860 states and 9045 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:03,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:43:03,225 INFO L93 Difference]: Finished difference Result 9655 states and 18007 transitions. [2021-11-22 15:43:03,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:43:03,225 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-22 15:43:03,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:43:03,234 INFO L225 Difference]: With dead ends: 9655 [2021-11-22 15:43:03,234 INFO L226 Difference]: Without dead ends: 4846 [2021-11-22 15:43:03,246 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 [2021-11-22 15:43:03,247 INFO L933 BasicCegarLoop]: 9019 mSDtfsCounter, 17945 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17945 SdHoareTripleChecker+Valid, 9110 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:43:03,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17945 Valid, 9110 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:43:03,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4846 states. [2021-11-22 15:43:03,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4846 to 4846. [2021-11-22 15:43:03,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4846 states, 4841 states have (on average 1.8640776699029127) internal successors, (9024), 4845 states have internal predecessors, (9024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:03,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4846 states to 4846 states and 9024 transitions. [2021-11-22 15:43:03,559 INFO L78 Accepts]: Start accepts. Automaton has 4846 states and 9024 transitions. Word has length 68 [2021-11-22 15:43:03,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:43:03,559 INFO L470 AbstractCegarLoop]: Abstraction has 4846 states and 9024 transitions. [2021-11-22 15:43:03,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:03,560 INFO L276 IsEmpty]: Start isEmpty. Operand 4846 states and 9024 transitions. [2021-11-22 15:43:03,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-22 15:43:03,562 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:43:03,562 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:43:03,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-22 15:43:03,562 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:43:03,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:43:03,563 INFO L85 PathProgramCache]: Analyzing trace with hash -765674640, now seen corresponding path program 1 times [2021-11-22 15:43:03,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:43:03,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467085886] [2021-11-22 15:43:03,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:43:03,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:43:03,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:43:03,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:43:03,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:43:03,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467085886] [2021-11-22 15:43:03,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467085886] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:43:03,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:43:03,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 15:43:03,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647677485] [2021-11-22 15:43:03,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:43:03,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:43:03,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:43:03,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:43:03,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:43:03,654 INFO L87 Difference]: Start difference. First operand 4846 states and 9024 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:04,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:43:04,013 INFO L93 Difference]: Finished difference Result 9658 states and 18005 transitions. [2021-11-22 15:43:04,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 15:43:04,013 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2021-11-22 15:43:04,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:43:04,020 INFO L225 Difference]: With dead ends: 9658 [2021-11-22 15:43:04,020 INFO L226 Difference]: Without dead ends: 4869 [2021-11-22 15:43:04,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-22 15:43:04,025 INFO L933 BasicCegarLoop]: 9022 mSDtfsCounter, 35907 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35907 SdHoareTripleChecker+Valid, 9211 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:43:04,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35907 Valid, 9211 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:43:04,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4869 states. [2021-11-22 15:43:04,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4869 to 4846. [2021-11-22 15:43:04,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4846 states, 4841 states have (on average 1.8638711010121876) internal successors, (9023), 4845 states have internal predecessors, (9023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:04,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4846 states to 4846 states and 9023 transitions. [2021-11-22 15:43:04,329 INFO L78 Accepts]: Start accepts. Automaton has 4846 states and 9023 transitions. Word has length 69 [2021-11-22 15:43:04,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:43:04,330 INFO L470 AbstractCegarLoop]: Abstraction has 4846 states and 9023 transitions. [2021-11-22 15:43:04,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:04,330 INFO L276 IsEmpty]: Start isEmpty. Operand 4846 states and 9023 transitions. [2021-11-22 15:43:04,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-22 15:43:04,333 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:43:04,333 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:43:04,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-22 15:43:04,339 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:43:04,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:43:04,340 INFO L85 PathProgramCache]: Analyzing trace with hash 376035228, now seen corresponding path program 1 times [2021-11-22 15:43:04,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:43:04,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505162659] [2021-11-22 15:43:04,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:43:04,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:43:04,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:43:04,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:43:04,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:43:04,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505162659] [2021-11-22 15:43:04,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505162659] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:43:04,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:43:04,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 15:43:04,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385295680] [2021-11-22 15:43:04,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:43:04,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:43:04,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:43:04,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:43:04,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:43:04,448 INFO L87 Difference]: Start difference. First operand 4846 states and 9023 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:04,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:43:04,892 INFO L93 Difference]: Finished difference Result 9646 states and 17984 transitions. [2021-11-22 15:43:04,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 15:43:04,893 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-22 15:43:04,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:43:04,900 INFO L225 Difference]: With dead ends: 9646 [2021-11-22 15:43:04,900 INFO L226 Difference]: Without dead ends: 4863 [2021-11-22 15:43:04,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-22 15:43:04,906 INFO L933 BasicCegarLoop]: 9011 mSDtfsCounter, 35889 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35889 SdHoareTripleChecker+Valid, 9170 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:43:04,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35889 Valid, 9170 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:43:04,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4863 states. [2021-11-22 15:43:05,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4863 to 4846. [2021-11-22 15:43:05,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4846 states, 4841 states have (on average 1.8636645321214624) internal successors, (9022), 4845 states have internal predecessors, (9022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:05,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4846 states to 4846 states and 9022 transitions. [2021-11-22 15:43:05,139 INFO L78 Accepts]: Start accepts. Automaton has 4846 states and 9022 transitions. Word has length 70 [2021-11-22 15:43:05,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:43:05,140 INFO L470 AbstractCegarLoop]: Abstraction has 4846 states and 9022 transitions. [2021-11-22 15:43:05,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:05,140 INFO L276 IsEmpty]: Start isEmpty. Operand 4846 states and 9022 transitions. [2021-11-22 15:43:05,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-22 15:43:05,142 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:43:05,142 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:43:05,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-22 15:43:05,143 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:43:05,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:43:05,144 INFO L85 PathProgramCache]: Analyzing trace with hash 247368572, now seen corresponding path program 1 times [2021-11-22 15:43:05,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:43:05,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270450302] [2021-11-22 15:43:05,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:43:05,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:43:05,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:43:05,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:43:05,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:43:05,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270450302] [2021-11-22 15:43:05,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270450302] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:43:05,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:43:05,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:43:05,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354431748] [2021-11-22 15:43:05,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:43:05,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:43:05,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:43:05,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:43:05,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:43:05,221 INFO L87 Difference]: Start difference. First operand 4846 states and 9022 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:05,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:43:05,907 INFO L93 Difference]: Finished difference Result 11176 states and 20902 transitions. [2021-11-22 15:43:05,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:43:05,908 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2021-11-22 15:43:05,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:43:05,926 INFO L225 Difference]: With dead ends: 11176 [2021-11-22 15:43:05,926 INFO L226 Difference]: Without dead ends: 8729 [2021-11-22 15:43:05,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:43:05,934 INFO L933 BasicCegarLoop]: 8971 mSDtfsCounter, 8485 mSDsluCounter, 7704 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8485 SdHoareTripleChecker+Valid, 16675 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:43:05,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8485 Valid, 16675 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:43:05,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8729 states. [2021-11-22 15:43:06,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8729 to 6724. [2021-11-22 15:43:06,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6724 states, 6719 states have (on average 1.8693257925286502) internal successors, (12560), 6723 states have internal predecessors, (12560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:06,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6724 states to 6724 states and 12560 transitions. [2021-11-22 15:43:06,318 INFO L78 Accepts]: Start accepts. Automaton has 6724 states and 12560 transitions. Word has length 71 [2021-11-22 15:43:06,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:43:06,318 INFO L470 AbstractCegarLoop]: Abstraction has 6724 states and 12560 transitions. [2021-11-22 15:43:06,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:06,318 INFO L276 IsEmpty]: Start isEmpty. Operand 6724 states and 12560 transitions. [2021-11-22 15:43:06,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-22 15:43:06,325 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:43:06,325 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:43:06,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-22 15:43:06,326 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:43:06,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:43:06,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1266568575, now seen corresponding path program 1 times [2021-11-22 15:43:06,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:43:06,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831859258] [2021-11-22 15:43:06,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:43:06,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:43:06,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:43:06,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:43:06,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:43:06,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831859258] [2021-11-22 15:43:06,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831859258] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:43:06,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:43:06,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:43:06,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050964176] [2021-11-22 15:43:06,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:43:06,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:43:06,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:43:06,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:43:06,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:43:06,395 INFO L87 Difference]: Start difference. First operand 6724 states and 12560 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:07,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:43:07,159 INFO L93 Difference]: Finished difference Result 13303 states and 24698 transitions. [2021-11-22 15:43:07,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 15:43:07,159 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-22 15:43:07,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:43:07,176 INFO L225 Difference]: With dead ends: 13303 [2021-11-22 15:43:07,176 INFO L226 Difference]: Without dead ends: 7831 [2021-11-22 15:43:07,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:43:07,184 INFO L933 BasicCegarLoop]: 9283 mSDtfsCounter, 14745 mSDsluCounter, 11949 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14745 SdHoareTripleChecker+Valid, 21232 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:43:07,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14745 Valid, 21232 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:43:07,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7831 states. [2021-11-22 15:43:07,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7831 to 5480. [2021-11-22 15:43:07,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5480 states, 5475 states have (on average 1.8582648401826485) internal successors, (10174), 5479 states have internal predecessors, (10174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:07,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5480 states to 5480 states and 10174 transitions. [2021-11-22 15:43:07,549 INFO L78 Accepts]: Start accepts. Automaton has 5480 states and 10174 transitions. Word has length 86 [2021-11-22 15:43:07,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:43:07,549 INFO L470 AbstractCegarLoop]: Abstraction has 5480 states and 10174 transitions. [2021-11-22 15:43:07,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:07,549 INFO L276 IsEmpty]: Start isEmpty. Operand 5480 states and 10174 transitions. [2021-11-22 15:43:07,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-22 15:43:07,553 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:43:07,553 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:43:07,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-22 15:43:07,554 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:43:07,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:43:07,555 INFO L85 PathProgramCache]: Analyzing trace with hash -106491905, now seen corresponding path program 1 times [2021-11-22 15:43:07,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:43:07,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266800256] [2021-11-22 15:43:07,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:43:07,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:43:07,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:43:07,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:43:07,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:43:07,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266800256] [2021-11-22 15:43:07,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266800256] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:43:07,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:43:07,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:43:07,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635187081] [2021-11-22 15:43:07,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:43:07,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:43:07,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:43:07,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:43:07,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:43:07,616 INFO L87 Difference]: Start difference. First operand 5480 states and 10174 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:10,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:43:10,445 INFO L93 Difference]: Finished difference Result 22016 states and 40798 transitions. [2021-11-22 15:43:10,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:43:10,446 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-22 15:43:10,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:43:10,485 INFO L225 Difference]: With dead ends: 22016 [2021-11-22 15:43:10,486 INFO L226 Difference]: Without dead ends: 16619 [2021-11-22 15:43:10,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:43:10,496 INFO L933 BasicCegarLoop]: 13231 mSDtfsCounter, 26546 mSDsluCounter, 19910 mSDsCounter, 0 mSdLazyCounter, 1213 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26546 SdHoareTripleChecker+Valid, 33141 SdHoareTripleChecker+Invalid, 1376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-22 15:43:10,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26546 Valid, 33141 Invalid, 1376 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [163 Valid, 1213 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-22 15:43:10,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16619 states. [2021-11-22 15:43:10,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16619 to 5494. [2021-11-22 15:43:10,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5494 states, 5489 states have (on average 1.8560757879395153) internal successors, (10188), 5493 states have internal predecessors, (10188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:10,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5494 states to 5494 states and 10188 transitions. [2021-11-22 15:43:10,960 INFO L78 Accepts]: Start accepts. Automaton has 5494 states and 10188 transitions. Word has length 87 [2021-11-22 15:43:10,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:43:10,960 INFO L470 AbstractCegarLoop]: Abstraction has 5494 states and 10188 transitions. [2021-11-22 15:43:10,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:10,960 INFO L276 IsEmpty]: Start isEmpty. Operand 5494 states and 10188 transitions. [2021-11-22 15:43:10,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-22 15:43:10,964 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:43:10,964 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:43:10,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-22 15:43:10,964 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:43:10,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:43:10,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1912377138, now seen corresponding path program 1 times [2021-11-22 15:43:10,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:43:10,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302059184] [2021-11-22 15:43:10,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:43:10,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:43:10,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:43:11,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:43:11,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:43:11,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302059184] [2021-11-22 15:43:11,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302059184] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:43:11,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:43:11,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:43:11,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151132283] [2021-11-22 15:43:11,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:43:11,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:43:11,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:43:11,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:43:11,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:43:11,026 INFO L87 Difference]: Start difference. First operand 5494 states and 10188 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:13,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:43:13,014 INFO L93 Difference]: Finished difference Result 16252 states and 30047 transitions. [2021-11-22 15:43:13,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:43:13,014 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-22 15:43:13,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:43:13,035 INFO L225 Difference]: With dead ends: 16252 [2021-11-22 15:43:13,035 INFO L226 Difference]: Without dead ends: 10828 [2021-11-22 15:43:13,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:43:13,045 INFO L933 BasicCegarLoop]: 12201 mSDtfsCounter, 10290 mSDsluCounter, 12170 mSDsCounter, 0 mSdLazyCounter, 1377 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10290 SdHoareTripleChecker+Valid, 24371 SdHoareTripleChecker+Invalid, 1568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:43:13,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10290 Valid, 24371 Invalid, 1568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 1377 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-22 15:43:13,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10828 states. [2021-11-22 15:43:13,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10828 to 6996. [2021-11-22 15:43:13,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6996 states, 6991 states have (on average 1.8363610356172222) internal successors, (12838), 6995 states have internal predecessors, (12838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:13,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6996 states to 6996 states and 12838 transitions. [2021-11-22 15:43:13,566 INFO L78 Accepts]: Start accepts. Automaton has 6996 states and 12838 transitions. Word has length 88 [2021-11-22 15:43:13,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:43:13,566 INFO L470 AbstractCegarLoop]: Abstraction has 6996 states and 12838 transitions. [2021-11-22 15:43:13,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:13,567 INFO L276 IsEmpty]: Start isEmpty. Operand 6996 states and 12838 transitions. [2021-11-22 15:43:13,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-22 15:43:13,569 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:43:13,569 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:43:13,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-22 15:43:13,569 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:43:13,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:43:13,570 INFO L85 PathProgramCache]: Analyzing trace with hash -962459478, now seen corresponding path program 1 times [2021-11-22 15:43:13,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:43:13,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74020765] [2021-11-22 15:43:13,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:43:13,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:43:13,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:43:13,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:43:13,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:43:13,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74020765] [2021-11-22 15:43:13,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74020765] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:43:13,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:43:13,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:43:13,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844468793] [2021-11-22 15:43:13,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:43:13,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:43:13,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:43:13,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:43:13,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:43:13,632 INFO L87 Difference]: Start difference. First operand 6996 states and 12838 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:16,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:43:16,542 INFO L93 Difference]: Finished difference Result 46436 states and 85555 transitions. [2021-11-22 15:43:16,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 15:43:16,543 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2021-11-22 15:43:16,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:43:16,609 INFO L225 Difference]: With dead ends: 46436 [2021-11-22 15:43:16,609 INFO L226 Difference]: Without dead ends: 39519 [2021-11-22 15:43:16,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:43:16,625 INFO L933 BasicCegarLoop]: 11563 mSDtfsCounter, 45300 mSDsluCounter, 33462 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45300 SdHoareTripleChecker+Valid, 45025 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:43:16,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45300 Valid, 45025 Invalid, 263 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [112 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 15:43:16,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39519 states. [2021-11-22 15:43:17,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39519 to 11147. [2021-11-22 15:43:17,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11147 states, 11142 states have (on average 1.8381798599892298) internal successors, (20481), 11146 states have internal predecessors, (20481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:17,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11147 states to 11147 states and 20481 transitions. [2021-11-22 15:43:17,576 INFO L78 Accepts]: Start accepts. Automaton has 11147 states and 20481 transitions. Word has length 90 [2021-11-22 15:43:17,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:43:17,577 INFO L470 AbstractCegarLoop]: Abstraction has 11147 states and 20481 transitions. [2021-11-22 15:43:17,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:17,577 INFO L276 IsEmpty]: Start isEmpty. Operand 11147 states and 20481 transitions. [2021-11-22 15:43:17,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-22 15:43:17,580 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:43:17,580 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:43:17,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-22 15:43:17,580 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:43:17,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:43:17,581 INFO L85 PathProgramCache]: Analyzing trace with hash 423743916, now seen corresponding path program 1 times [2021-11-22 15:43:17,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:43:17,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609967272] [2021-11-22 15:43:17,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:43:17,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:43:17,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:43:17,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:43:17,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:43:17,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609967272] [2021-11-22 15:43:17,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609967272] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:43:17,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:43:17,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:43:17,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016281785] [2021-11-22 15:43:17,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:43:17,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:43:17,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:43:17,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:43:17,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:43:17,643 INFO L87 Difference]: Start difference. First operand 11147 states and 20481 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:19,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:43:19,424 INFO L93 Difference]: Finished difference Result 33680 states and 61878 transitions. [2021-11-22 15:43:19,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:43:19,424 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2021-11-22 15:43:19,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:43:19,461 INFO L225 Difference]: With dead ends: 33680 [2021-11-22 15:43:19,462 INFO L226 Difference]: Without dead ends: 26931 [2021-11-22 15:43:19,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:43:19,472 INFO L933 BasicCegarLoop]: 6614 mSDtfsCounter, 17765 mSDsluCounter, 10285 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17765 SdHoareTripleChecker+Valid, 16899 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:43:19,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17765 Valid, 16899 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:43:19,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26931 states. [2021-11-22 15:43:20,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26931 to 17159. [2021-11-22 15:43:20,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17159 states, 17154 states have (on average 1.837938673195756) internal successors, (31528), 17158 states have internal predecessors, (31528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:20,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17159 states to 17159 states and 31528 transitions. [2021-11-22 15:43:20,423 INFO L78 Accepts]: Start accepts. Automaton has 17159 states and 31528 transitions. Word has length 90 [2021-11-22 15:43:20,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:43:20,423 INFO L470 AbstractCegarLoop]: Abstraction has 17159 states and 31528 transitions. [2021-11-22 15:43:20,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:20,423 INFO L276 IsEmpty]: Start isEmpty. Operand 17159 states and 31528 transitions. [2021-11-22 15:43:20,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-22 15:43:20,427 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:43:20,427 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:43:20,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-22 15:43:20,428 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:43:20,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:43:20,428 INFO L85 PathProgramCache]: Analyzing trace with hash 127932482, now seen corresponding path program 1 times [2021-11-22 15:43:20,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:43:20,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998541733] [2021-11-22 15:43:20,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:43:20,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:43:20,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:43:20,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:43:20,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:43:20,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998541733] [2021-11-22 15:43:20,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998541733] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:43:20,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:43:20,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:43:20,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363014014] [2021-11-22 15:43:20,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:43:20,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:43:20,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:43:20,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:43:20,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:43:20,484 INFO L87 Difference]: Start difference. First operand 17159 states and 31528 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:22,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:43:22,211 INFO L93 Difference]: Finished difference Result 39797 states and 73020 transitions. [2021-11-22 15:43:22,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:43:22,212 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2021-11-22 15:43:22,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:43:22,260 INFO L225 Difference]: With dead ends: 39797 [2021-11-22 15:43:22,260 INFO L226 Difference]: Without dead ends: 27287 [2021-11-22 15:43:22,279 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 [2021-11-22 15:43:22,280 INFO L933 BasicCegarLoop]: 6478 mSDtfsCounter, 4796 mSDsluCounter, 12430 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4796 SdHoareTripleChecker+Valid, 18908 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:43:22,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4796 Valid, 18908 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:43:22,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27287 states. [2021-11-22 15:43:23,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27287 to 17179. [2021-11-22 15:43:23,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17179 states, 17174 states have (on average 1.83626412018167) internal successors, (31536), 17178 states have internal predecessors, (31536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:23,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17179 states to 17179 states and 31536 transitions. [2021-11-22 15:43:23,493 INFO L78 Accepts]: Start accepts. Automaton has 17179 states and 31536 transitions. Word has length 92 [2021-11-22 15:43:23,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:43:23,493 INFO L470 AbstractCegarLoop]: Abstraction has 17179 states and 31536 transitions. [2021-11-22 15:43:23,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:23,494 INFO L276 IsEmpty]: Start isEmpty. Operand 17179 states and 31536 transitions. [2021-11-22 15:43:23,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-22 15:43:23,498 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:43:23,498 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:43:23,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-22 15:43:23,498 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:43:23,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:43:23,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1145644895, now seen corresponding path program 1 times [2021-11-22 15:43:23,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:43:23,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13375724] [2021-11-22 15:43:23,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:43:23,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:43:23,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:43:23,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:43:23,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:43:23,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13375724] [2021-11-22 15:43:23,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13375724] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:43:23,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:43:23,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 15:43:23,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258999303] [2021-11-22 15:43:23,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:43:23,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 15:43:23,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:43:23,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 15:43:23,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:43:23,597 INFO L87 Difference]: Start difference. First operand 17179 states and 31536 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:26,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:43:26,842 INFO L93 Difference]: Finished difference Result 52766 states and 96840 transitions. [2021-11-22 15:43:26,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 15:43:26,843 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2021-11-22 15:43:26,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:43:26,902 INFO L225 Difference]: With dead ends: 52766 [2021-11-22 15:43:26,902 INFO L226 Difference]: Without dead ends: 40012 [2021-11-22 15:43:26,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-22 15:43:26,913 INFO L933 BasicCegarLoop]: 10772 mSDtfsCounter, 48276 mSDsluCounter, 24037 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48276 SdHoareTripleChecker+Valid, 34809 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 15:43:26,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48276 Valid, 34809 Invalid, 525 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [128 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 15:43:26,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40012 states. [2021-11-22 15:43:28,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40012 to 17191. [2021-11-22 15:43:28,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17191 states, 17186 states have (on average 1.8350401489584545) internal successors, (31537), 17190 states have internal predecessors, (31537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:28,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17191 states to 17191 states and 31537 transitions. [2021-11-22 15:43:28,070 INFO L78 Accepts]: Start accepts. Automaton has 17191 states and 31537 transitions. Word has length 98 [2021-11-22 15:43:28,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:43:28,070 INFO L470 AbstractCegarLoop]: Abstraction has 17191 states and 31537 transitions. [2021-11-22 15:43:28,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:28,070 INFO L276 IsEmpty]: Start isEmpty. Operand 17191 states and 31537 transitions. [2021-11-22 15:43:28,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-22 15:43:28,074 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:43:28,074 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:43:28,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-22 15:43:28,075 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:43:28,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:43:28,075 INFO L85 PathProgramCache]: Analyzing trace with hash 777583139, now seen corresponding path program 1 times [2021-11-22 15:43:28,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:43:28,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784867069] [2021-11-22 15:43:28,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:43:28,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:43:28,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:43:28,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:43:28,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:43:28,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784867069] [2021-11-22 15:43:28,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784867069] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:43:28,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:43:28,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:43:28,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733133248] [2021-11-22 15:43:28,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:43:28,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:43:28,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:43:28,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:43:28,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:43:28,146 INFO L87 Difference]: Start difference. First operand 17191 states and 31537 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:29,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:43:29,455 INFO L93 Difference]: Finished difference Result 29725 states and 54528 transitions. [2021-11-22 15:43:29,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:43:29,455 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2021-11-22 15:43:29,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:43:29,484 INFO L225 Difference]: With dead ends: 29725 [2021-11-22 15:43:29,484 INFO L226 Difference]: Without dead ends: 17220 [2021-11-22 15:43:29,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:43:29,496 INFO L933 BasicCegarLoop]: 6465 mSDtfsCounter, 25619 mSDsluCounter, 6147 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25619 SdHoareTripleChecker+Valid, 12612 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:43:29,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25619 Valid, 12612 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:43:29,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17220 states. [2021-11-22 15:43:30,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17220 to 17191. [2021-11-22 15:43:30,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17191 states, 17186 states have (on average 1.8327708600023276) internal successors, (31498), 17190 states have internal predecessors, (31498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:30,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17191 states to 17191 states and 31498 transitions. [2021-11-22 15:43:30,736 INFO L78 Accepts]: Start accepts. Automaton has 17191 states and 31498 transitions. Word has length 98 [2021-11-22 15:43:30,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:43:30,737 INFO L470 AbstractCegarLoop]: Abstraction has 17191 states and 31498 transitions. [2021-11-22 15:43:30,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:30,737 INFO L276 IsEmpty]: Start isEmpty. Operand 17191 states and 31498 transitions. [2021-11-22 15:43:30,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-22 15:43:30,740 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:43:30,741 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:43:30,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-22 15:43:30,741 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:43:30,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:43:30,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1216561567, now seen corresponding path program 1 times [2021-11-22 15:43:30,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:43:30,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118360337] [2021-11-22 15:43:30,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:43:30,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:43:30,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:43:30,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:43:30,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:43:30,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118360337] [2021-11-22 15:43:30,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118360337] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:43:30,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:43:30,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:43:30,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087843835] [2021-11-22 15:43:30,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:43:30,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:43:30,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:43:30,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:43:30,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:43:30,822 INFO L87 Difference]: Start difference. First operand 17191 states and 31498 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:36,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:43:36,420 INFO L93 Difference]: Finished difference Result 59815 states and 109543 transitions. [2021-11-22 15:43:36,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-22 15:43:36,420 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2021-11-22 15:43:36,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:43:36,498 INFO L225 Difference]: With dead ends: 59815 [2021-11-22 15:43:36,499 INFO L226 Difference]: Without dead ends: 47296 [2021-11-22 15:43:36,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-11-22 15:43:36,513 INFO L933 BasicCegarLoop]: 10289 mSDtfsCounter, 25114 mSDsluCounter, 31286 mSDsCounter, 0 mSdLazyCounter, 1933 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25114 SdHoareTripleChecker+Valid, 41575 SdHoareTripleChecker+Invalid, 2085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 1933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-22 15:43:36,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25114 Valid, 41575 Invalid, 2085 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [152 Valid, 1933 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-22 15:43:36,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47296 states. [2021-11-22 15:43:38,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47296 to 28028. [2021-11-22 15:43:38,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28028 states, 28023 states have (on average 1.835492274203333) internal successors, (51436), 28027 states have internal predecessors, (51436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:38,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28028 states to 28028 states and 51436 transitions. [2021-11-22 15:43:38,793 INFO L78 Accepts]: Start accepts. Automaton has 28028 states and 51436 transitions. Word has length 98 [2021-11-22 15:43:38,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:43:38,793 INFO L470 AbstractCegarLoop]: Abstraction has 28028 states and 51436 transitions. [2021-11-22 15:43:38,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:38,793 INFO L276 IsEmpty]: Start isEmpty. Operand 28028 states and 51436 transitions. [2021-11-22 15:43:38,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-22 15:43:38,796 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:43:38,796 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:43:38,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-22 15:43:38,796 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:43:38,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:43:38,796 INFO L85 PathProgramCache]: Analyzing trace with hash 430469978, now seen corresponding path program 1 times [2021-11-22 15:43:38,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:43:38,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395766567] [2021-11-22 15:43:38,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:43:38,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:43:38,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:43:38,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:43:38,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:43:38,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395766567] [2021-11-22 15:43:38,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395766567] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:43:38,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:43:38,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:43:38,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823853603] [2021-11-22 15:43:38,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:43:38,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:43:38,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:43:38,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:43:38,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:43:38,885 INFO L87 Difference]: Start difference. First operand 28028 states and 51436 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 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) [2021-11-22 15:43:44,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:43:44,858 INFO L93 Difference]: Finished difference Result 77336 states and 141609 transitions. [2021-11-22 15:43:44,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-22 15:43:44,859 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 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 99 [2021-11-22 15:43:44,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:43:44,981 INFO L225 Difference]: With dead ends: 77336 [2021-11-22 15:43:44,981 INFO L226 Difference]: Without dead ends: 51328 [2021-11-22 15:43:45,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-22 15:43:45,008 INFO L933 BasicCegarLoop]: 8243 mSDtfsCounter, 25531 mSDsluCounter, 29003 mSDsCounter, 0 mSdLazyCounter, 1638 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25531 SdHoareTripleChecker+Valid, 37246 SdHoareTripleChecker+Invalid, 1830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 1638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-22 15:43:45,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25531 Valid, 37246 Invalid, 1830 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [192 Valid, 1638 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-22 15:43:45,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51328 states. [2021-11-22 15:43:47,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51328 to 28001. [2021-11-22 15:43:47,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28001 states, 27996 states have (on average 1.8349049864266325) internal successors, (51370), 28000 states have internal predecessors, (51370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:47,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28001 states to 28001 states and 51370 transitions. [2021-11-22 15:43:47,425 INFO L78 Accepts]: Start accepts. Automaton has 28001 states and 51370 transitions. Word has length 99 [2021-11-22 15:43:47,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:43:47,426 INFO L470 AbstractCegarLoop]: Abstraction has 28001 states and 51370 transitions. [2021-11-22 15:43:47,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 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) [2021-11-22 15:43:47,426 INFO L276 IsEmpty]: Start isEmpty. Operand 28001 states and 51370 transitions. [2021-11-22 15:43:47,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-22 15:43:47,428 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:43:47,429 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:43:47,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-22 15:43:47,429 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:43:47,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:43:47,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1932470952, now seen corresponding path program 1 times [2021-11-22 15:43:47,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:43:47,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837202006] [2021-11-22 15:43:47,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:43:47,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:43:47,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:43:47,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:43:47,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:43:47,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837202006] [2021-11-22 15:43:47,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837202006] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:43:47,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:43:47,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:43:47,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65507082] [2021-11-22 15:43:47,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:43:47,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:43:47,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:43:47,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:43:47,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:43:47,491 INFO L87 Difference]: Start difference. First operand 28001 states and 51370 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:49,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:43:49,654 INFO L93 Difference]: Finished difference Result 53939 states and 98979 transitions. [2021-11-22 15:43:49,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:43:49,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-11-22 15:43:49,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:43:49,698 INFO L225 Difference]: With dead ends: 53939 [2021-11-22 15:43:49,698 INFO L226 Difference]: Without dead ends: 27963 [2021-11-22 15:43:49,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:43:49,715 INFO L933 BasicCegarLoop]: 6427 mSDtfsCounter, 6338 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6338 SdHoareTripleChecker+Valid, 6427 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:43:49,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6338 Valid, 6427 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:43:49,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27963 states. [2021-11-22 15:43:52,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27963 to 27963. [2021-11-22 15:43:52,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27963 states, 27959 states have (on average 1.8346865052398154) internal successors, (51296), 27962 states have internal predecessors, (51296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:52,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27963 states to 27963 states and 51296 transitions. [2021-11-22 15:43:52,341 INFO L78 Accepts]: Start accepts. Automaton has 27963 states and 51296 transitions. Word has length 99 [2021-11-22 15:43:52,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:43:52,342 INFO L470 AbstractCegarLoop]: Abstraction has 27963 states and 51296 transitions. [2021-11-22 15:43:52,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:52,342 INFO L276 IsEmpty]: Start isEmpty. Operand 27963 states and 51296 transitions. [2021-11-22 15:43:52,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-22 15:43:52,345 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:43:52,346 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:43:52,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-22 15:43:52,346 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:43:52,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:43:52,347 INFO L85 PathProgramCache]: Analyzing trace with hash 222972714, now seen corresponding path program 1 times [2021-11-22 15:43:52,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:43:52,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965249653] [2021-11-22 15:43:52,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:43:52,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:43:52,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:43:52,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:43:52,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:43:52,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965249653] [2021-11-22 15:43:52,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965249653] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:43:52,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:43:52,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:43:52,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580339971] [2021-11-22 15:43:52,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:43:52,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:43:52,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:43:52,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:43:52,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:43:52,609 INFO L87 Difference]: Start difference. First operand 27963 states and 51296 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:55,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:43:55,805 INFO L93 Difference]: Finished difference Result 39046 states and 71738 transitions. [2021-11-22 15:43:55,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:43:55,806 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-11-22 15:43:55,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:43:55,874 INFO L225 Difference]: With dead ends: 39046 [2021-11-22 15:43:55,874 INFO L226 Difference]: Without dead ends: 39031 [2021-11-22 15:43:55,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:43:55,884 INFO L933 BasicCegarLoop]: 6427 mSDtfsCounter, 15169 mSDsluCounter, 12847 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15169 SdHoareTripleChecker+Valid, 19274 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:43:55,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15169 Valid, 19274 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:43:55,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39031 states. [2021-11-22 15:43:58,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39031 to 27978. [2021-11-22 15:43:58,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27978 states, 27974 states have (on average 1.834238936155001) internal successors, (51311), 27977 states have internal predecessors, (51311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:58,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27978 states to 27978 states and 51311 transitions. [2021-11-22 15:43:58,249 INFO L78 Accepts]: Start accepts. Automaton has 27978 states and 51311 transitions. Word has length 100 [2021-11-22 15:43:58,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:43:58,250 INFO L470 AbstractCegarLoop]: Abstraction has 27978 states and 51311 transitions. [2021-11-22 15:43:58,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:58,250 INFO L276 IsEmpty]: Start isEmpty. Operand 27978 states and 51311 transitions. [2021-11-22 15:43:58,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-22 15:43:58,252 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:43:58,252 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:43:58,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-22 15:43:58,253 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:43:58,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:43:58,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1207881649, now seen corresponding path program 1 times [2021-11-22 15:43:58,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:43:58,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168859444] [2021-11-22 15:43:58,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:43:58,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:43:58,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:43:58,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:43:58,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:43:58,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168859444] [2021-11-22 15:43:58,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168859444] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:43:58,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:43:58,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 15:43:58,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530244809] [2021-11-22 15:43:58,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:43:58,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 15:43:58,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:43:58,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 15:43:58,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:43:58,349 INFO L87 Difference]: Start difference. First operand 27978 states and 51311 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 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) [2021-11-22 15:44:02,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:44:02,603 INFO L93 Difference]: Finished difference Result 49498 states and 90579 transitions. [2021-11-22 15:44:02,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-22 15:44:02,603 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 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 102 [2021-11-22 15:44:02,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:44:02,680 INFO L225 Difference]: With dead ends: 49498 [2021-11-22 15:44:02,681 INFO L226 Difference]: Without dead ends: 49483 [2021-11-22 15:44:02,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-11-22 15:44:02,690 INFO L933 BasicCegarLoop]: 6427 mSDtfsCounter, 45978 mSDsluCounter, 8631 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45978 SdHoareTripleChecker+Valid, 15058 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:44:02,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45978 Valid, 15058 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:44:02,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49483 states. [2021-11-22 15:44:05,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49483 to 28446. [2021-11-22 15:44:05,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28446 states, 28442 states have (on average 1.8281414809085155) internal successors, (51996), 28445 states have internal predecessors, (51996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:44:05,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28446 states to 28446 states and 51996 transitions. [2021-11-22 15:44:05,256 INFO L78 Accepts]: Start accepts. Automaton has 28446 states and 51996 transitions. Word has length 102 [2021-11-22 15:44:05,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:44:05,256 INFO L470 AbstractCegarLoop]: Abstraction has 28446 states and 51996 transitions. [2021-11-22 15:44:05,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 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) [2021-11-22 15:44:05,256 INFO L276 IsEmpty]: Start isEmpty. Operand 28446 states and 51996 transitions. [2021-11-22 15:44:05,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-22 15:44:05,260 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:44:05,260 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:44:05,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-22 15:44:05,260 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:44:05,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:44:05,261 INFO L85 PathProgramCache]: Analyzing trace with hash -921853897, now seen corresponding path program 1 times [2021-11-22 15:44:05,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:44:05,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033186297] [2021-11-22 15:44:05,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:44:05,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:44:05,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:44:05,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:44:05,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:44:05,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033186297] [2021-11-22 15:44:05,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033186297] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:44:05,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:44:05,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:44:05,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399763034] [2021-11-22 15:44:05,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:44:05,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:44:05,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:44:05,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:44:05,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:44:05,337 INFO L87 Difference]: Start difference. First operand 28446 states and 51996 transitions. Second operand has 5 states, 5 states have (on average 21.8) 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)