./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label04.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d4d4fd-d1ba-4256-ad87-71f16e43d277/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d4d4fd-d1ba-4256-ad87-71f16e43d277/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d4d4fd-d1ba-4256-ad87-71f16e43d277/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d4d4fd-d1ba-4256-ad87-71f16e43d277/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label04.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d4d4fd-d1ba-4256-ad87-71f16e43d277/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d4d4fd-d1ba-4256-ad87-71f16e43d277/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ccd6fbf35fbbc8efdb8c53f020fbab2bec7c750b8b37d40c2d70f15f5e9d8bef --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 20:36:38,128 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 20:36:38,130 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 20:36:38,153 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 20:36:38,153 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 20:36:38,154 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 20:36:38,156 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 20:36:38,158 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 20:36:38,160 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 20:36:38,160 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 20:36:38,161 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 20:36:38,162 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 20:36:38,163 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 20:36:38,164 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 20:36:38,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 20:36:38,172 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 20:36:38,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 20:36:38,174 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 20:36:38,176 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 20:36:38,178 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 20:36:38,179 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 20:36:38,180 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 20:36:38,182 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 20:36:38,182 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 20:36:38,185 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 20:36:38,185 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 20:36:38,186 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 20:36:38,187 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 20:36:38,187 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 20:36:38,188 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 20:36:38,193 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 20:36:38,194 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 20:36:38,195 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 20:36:38,195 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 20:36:38,196 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 20:36:38,196 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 20:36:38,197 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 20:36:38,197 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 20:36:38,197 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 20:36:38,198 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 20:36:38,198 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 20:36:38,199 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d4d4fd-d1ba-4256-ad87-71f16e43d277/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 20:36:38,222 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 20:36:38,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 20:36:38,222 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 20:36:38,222 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 20:36:38,223 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 20:36:38,223 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 20:36:38,223 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 20:36:38,224 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 20:36:38,224 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 20:36:38,224 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 20:36:38,224 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 20:36:38,224 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 20:36:38,224 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 20:36:38,224 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 20:36:38,225 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 20:36:38,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 20:36:38,225 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 20:36:38,225 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 20:36:38,225 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 20:36:38,225 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 20:36:38,225 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 20:36:38,225 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 20:36:38,226 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 20:36:38,226 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 20:36:38,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:36:38,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 20:36:38,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 20:36:38,226 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 20:36:38,226 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 20:36:38,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 20:36:38,227 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 20:36:38,227 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 20:36:38,227 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 20:36:38,227 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 20:36:38,227 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_90d4d4fd-d1ba-4256-ad87-71f16e43d277/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d4d4fd-d1ba-4256-ad87-71f16e43d277/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ccd6fbf35fbbc8efdb8c53f020fbab2bec7c750b8b37d40c2d70f15f5e9d8bef [2021-12-06 20:36:38,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 20:36:38,419 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 20:36:38,421 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 20:36:38,422 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 20:36:38,422 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 20:36:38,423 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d4d4fd-d1ba-4256-ad87-71f16e43d277/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label04.c [2021-12-06 20:36:38,464 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d4d4fd-d1ba-4256-ad87-71f16e43d277/bin/uautomizer-DrprNOufMa/data/18f8409c7/bfa4e9c535e349378b1a6fdc194466ad/FLAGd19bf12dc [2021-12-06 20:36:39,037 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 20:36:39,038 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d4d4fd-d1ba-4256-ad87-71f16e43d277/sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label04.c [2021-12-06 20:36:39,060 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d4d4fd-d1ba-4256-ad87-71f16e43d277/bin/uautomizer-DrprNOufMa/data/18f8409c7/bfa4e9c535e349378b1a6fdc194466ad/FLAGd19bf12dc [2021-12-06 20:36:39,500 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d4d4fd-d1ba-4256-ad87-71f16e43d277/bin/uautomizer-DrprNOufMa/data/18f8409c7/bfa4e9c535e349378b1a6fdc194466ad [2021-12-06 20:36:39,503 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 20:36:39,504 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 20:36:39,505 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 20:36:39,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 20:36:39,508 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 20:36:39,509 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:36:39" (1/1) ... [2021-12-06 20:36:39,510 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@166761e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:36:39, skipping insertion in model container [2021-12-06 20:36:39,510 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:36:39" (1/1) ... [2021-12-06 20:36:39,517 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 20:36:39,611 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 20:36:39,886 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_90d4d4fd-d1ba-4256-ad87-71f16e43d277/sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label04.c[15547,15560] [2021-12-06 20:36:39,928 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_90d4d4fd-d1ba-4256-ad87-71f16e43d277/sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label04.c[22608,22621] [2021-12-06 20:36:40,454 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:36:40,461 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 20:36:40,486 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_90d4d4fd-d1ba-4256-ad87-71f16e43d277/sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label04.c[15547,15560] [2021-12-06 20:36:40,496 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_90d4d4fd-d1ba-4256-ad87-71f16e43d277/sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label04.c[22608,22621] [2021-12-06 20:36:40,835 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:36:40,867 INFO L208 MainTranslator]: Completed translation [2021-12-06 20:36:40,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:36:40 WrapperNode [2021-12-06 20:36:40,867 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 20:36:40,868 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 20:36:40,868 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 20:36:40,868 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 20:36:40,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:36:40" (1/1) ... [2021-12-06 20:36:40,913 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:36:40" (1/1) ... [2021-12-06 20:36:41,149 INFO L137 Inliner]: procedures = 38, calls = 23, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 5148 [2021-12-06 20:36:41,150 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 20:36:41,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 20:36:41,151 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 20:36:41,151 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 20:36:41,170 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:36:40" (1/1) ... [2021-12-06 20:36:41,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:36:40" (1/1) ... [2021-12-06 20:36:41,219 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:36:40" (1/1) ... [2021-12-06 20:36:41,219 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:36:40" (1/1) ... [2021-12-06 20:36:41,373 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:36:40" (1/1) ... [2021-12-06 20:36:41,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:36:40" (1/1) ... [2021-12-06 20:36:41,422 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:36:40" (1/1) ... [2021-12-06 20:36:41,479 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 20:36:41,480 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 20:36:41,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 20:36:41,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 20:36:41,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:36:40" (1/1) ... [2021-12-06 20:36:41,487 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:36:41,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d4d4fd-d1ba-4256-ad87-71f16e43d277/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:36:41,508 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d4d4fd-d1ba-4256-ad87-71f16e43d277/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 20:36:41,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d4d4fd-d1ba-4256-ad87-71f16e43d277/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 20:36:41,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 20:36:41,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 20:36:41,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 20:36:41,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 20:36:41,652 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 20:36:41,653 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 20:36:44,446 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 20:36:44,461 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 20:36:44,461 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-06 20:36:44,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:36:44 BoogieIcfgContainer [2021-12-06 20:36:44,464 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 20:36:44,465 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 20:36:44,465 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 20:36:44,467 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 20:36:44,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 08:36:39" (1/3) ... [2021-12-06 20:36:44,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36f4d748 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:36:44, skipping insertion in model container [2021-12-06 20:36:44,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:36:40" (2/3) ... [2021-12-06 20:36:44,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36f4d748 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:36:44, skipping insertion in model container [2021-12-06 20:36:44,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:36:44" (3/3) ... [2021-12-06 20:36:44,469 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label04.c [2021-12-06 20:36:44,473 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 20:36:44,474 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-06 20:36:44,511 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 20:36:44,516 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 20:36:44,516 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-06 20:36:44,541 INFO L276 IsEmpty]: Start isEmpty. Operand has 928 states, 925 states have (on average 1.8983783783783783) internal successors, (1756), 927 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:36:44,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-06 20:36:44,548 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:36:44,548 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] [2021-12-06 20:36:44,548 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:36:44,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:36:44,552 INFO L85 PathProgramCache]: Analyzing trace with hash -321533933, now seen corresponding path program 1 times [2021-12-06 20:36:44,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:36:44,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391834486] [2021-12-06 20:36:44,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:36:44,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:36:44,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:36:44,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:36:44,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:36:44,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391834486] [2021-12-06 20:36:44,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391834486] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:36:44,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:36:44,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 20:36:44,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151582866] [2021-12-06 20:36:44,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:36:44,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 20:36:44,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:36:44,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 20:36:44,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 20:36:44,723 INFO L87 Difference]: Start difference. First operand has 928 states, 925 states have (on average 1.8983783783783783) internal successors, (1756), 927 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:36:44,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:36:44,837 INFO L93 Difference]: Finished difference Result 1808 states and 3422 transitions. [2021-12-06 20:36:44,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 20:36:44,839 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2021-12-06 20:36:44,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:36:44,857 INFO L225 Difference]: With dead ends: 1808 [2021-12-06 20:36:44,857 INFO L226 Difference]: Without dead ends: 862 [2021-12-06 20:36:44,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 20:36:44,865 INFO L933 BasicCegarLoop]: 1687 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1687 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:36:44,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1687 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:36:44,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2021-12-06 20:36:44,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 862. [2021-12-06 20:36:44,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 860 states have (on average 1.8872093023255814) internal successors, (1623), 861 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:36:44,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 1623 transitions. [2021-12-06 20:36:44,938 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 1623 transitions. Word has length 38 [2021-12-06 20:36:44,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:36:44,938 INFO L470 AbstractCegarLoop]: Abstraction has 862 states and 1623 transitions. [2021-12-06 20:36:44,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:36:44,939 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 1623 transitions. [2021-12-06 20:36:44,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-06 20:36:44,941 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:36:44,941 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] [2021-12-06 20:36:44,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 20:36:44,942 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:36:44,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:36:44,943 INFO L85 PathProgramCache]: Analyzing trace with hash -46774319, now seen corresponding path program 1 times [2021-12-06 20:36:44,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:36:44,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406495168] [2021-12-06 20:36:44,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:36:44,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:36:45,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:36:45,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:36:45,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:36:45,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406495168] [2021-12-06 20:36:45,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406495168] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:36:45,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:36:45,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 20:36:45,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131458285] [2021-12-06 20:36:45,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:36:45,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 20:36:45,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:36:45,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 20:36:45,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:36:45,078 INFO L87 Difference]: Start difference. First operand 862 states and 1623 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:36:45,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:36:45,157 INFO L93 Difference]: Finished difference Result 928 states and 1725 transitions. [2021-12-06 20:36:45,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:36:45,158 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2021-12-06 20:36:45,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:36:45,163 INFO L225 Difference]: With dead ends: 928 [2021-12-06 20:36:45,163 INFO L226 Difference]: Without dead ends: 862 [2021-12-06 20:36:45,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:36:45,165 INFO L933 BasicCegarLoop]: 1621 mSDtfsCounter, 3 mSDsluCounter, 4820 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6441 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:36:45,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6441 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:36:45,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2021-12-06 20:36:45,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 862. [2021-12-06 20:36:45,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 860 states have (on average 1.8406976744186045) internal successors, (1583), 861 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:36:45,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 1583 transitions. [2021-12-06 20:36:45,187 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 1583 transitions. Word has length 38 [2021-12-06 20:36:45,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:36:45,187 INFO L470 AbstractCegarLoop]: Abstraction has 862 states and 1583 transitions. [2021-12-06 20:36:45,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:36:45,187 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 1583 transitions. [2021-12-06 20:36:45,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-06 20:36:45,190 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:36:45,190 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] [2021-12-06 20:36:45,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 20:36:45,190 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:36:45,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:36:45,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1095136003, now seen corresponding path program 1 times [2021-12-06 20:36:45,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:36:45,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526773017] [2021-12-06 20:36:45,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:36:45,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:36:45,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:36:45,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:36:45,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:36:45,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526773017] [2021-12-06 20:36:45,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526773017] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:36:45,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:36:45,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:36:45,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929520859] [2021-12-06 20:36:45,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:36:45,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:36:45,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:36:45,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:36:45,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:36:45,320 INFO L87 Difference]: Start difference. First operand 862 states and 1583 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:36:50,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:36:50,099 INFO L93 Difference]: Finished difference Result 3117 states and 5892 transitions. [2021-12-06 20:36:50,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 20:36:50,099 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-12-06 20:36:50,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:36:50,110 INFO L225 Difference]: With dead ends: 3117 [2021-12-06 20:36:50,110 INFO L226 Difference]: Without dead ends: 2364 [2021-12-06 20:36:50,111 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 [2021-12-06 20:36:50,112 INFO L933 BasicCegarLoop]: 819 mSDtfsCounter, 2471 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2471 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 6515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1161 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-12-06 20:36:50,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2471 Valid, 837 Invalid, 6515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1161 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-12-06 20:36:50,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2364 states. [2021-12-06 20:36:50,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2364 to 2364. [2021-12-06 20:36:50,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2364 states, 2362 states have (on average 1.5651989839119391) internal successors, (3697), 2363 states have internal predecessors, (3697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:36:50,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2364 states to 2364 states and 3697 transitions. [2021-12-06 20:36:50,155 INFO L78 Accepts]: Start accepts. Automaton has 2364 states and 3697 transitions. Word has length 61 [2021-12-06 20:36:50,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:36:50,156 INFO L470 AbstractCegarLoop]: Abstraction has 2364 states and 3697 transitions. [2021-12-06 20:36:50,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:36:50,156 INFO L276 IsEmpty]: Start isEmpty. Operand 2364 states and 3697 transitions. [2021-12-06 20:36:50,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-06 20:36:50,158 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:36:50,158 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:36:50,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 20:36:50,158 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:36:50,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:36:50,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1531755293, now seen corresponding path program 1 times [2021-12-06 20:36:50,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:36:50,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329175311] [2021-12-06 20:36:50,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:36:50,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:36:50,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:36:50,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:36:50,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:36:50,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329175311] [2021-12-06 20:36:50,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329175311] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:36:50,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:36:50,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:36:50,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439404568] [2021-12-06 20:36:50,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:36:50,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:36:50,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:36:50,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:36:50,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:36:50,213 INFO L87 Difference]: Start difference. First operand 2364 states and 3697 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:36:50,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:36:50,239 INFO L93 Difference]: Finished difference Result 2482 states and 3883 transitions. [2021-12-06 20:36:50,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:36:50,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-12-06 20:36:50,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:36:50,250 INFO L225 Difference]: With dead ends: 2482 [2021-12-06 20:36:50,250 INFO L226 Difference]: Without dead ends: 2420 [2021-12-06 20:36:50,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:36:50,252 INFO L933 BasicCegarLoop]: 1651 mSDtfsCounter, 1523 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1523 SdHoareTripleChecker+Valid, 1751 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:36:50,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1523 Valid, 1751 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:36:50,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2420 states. [2021-12-06 20:36:50,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2420 to 2418. [2021-12-06 20:36:50,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2418 states, 2416 states have (on average 1.5658112582781456) internal successors, (3783), 2417 states have internal predecessors, (3783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:36:50,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2418 states to 2418 states and 3783 transitions. [2021-12-06 20:36:50,298 INFO L78 Accepts]: Start accepts. Automaton has 2418 states and 3783 transitions. Word has length 77 [2021-12-06 20:36:50,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:36:50,299 INFO L470 AbstractCegarLoop]: Abstraction has 2418 states and 3783 transitions. [2021-12-06 20:36:50,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:36:50,299 INFO L276 IsEmpty]: Start isEmpty. Operand 2418 states and 3783 transitions. [2021-12-06 20:36:50,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-06 20:36:50,300 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:36:50,300 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:36:50,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 20:36:50,300 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:36:50,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:36:50,301 INFO L85 PathProgramCache]: Analyzing trace with hash 786172563, now seen corresponding path program 1 times [2021-12-06 20:36:50,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:36:50,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616569876] [2021-12-06 20:36:50,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:36:50,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:36:50,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:36:50,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:36:50,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:36:50,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616569876] [2021-12-06 20:36:50,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616569876] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:36:50,348 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:36:50,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:36:50,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213619556] [2021-12-06 20:36:50,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:36:50,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:36:50,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:36:50,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:36:50,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:36:50,349 INFO L87 Difference]: Start difference. First operand 2418 states and 3783 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:36:50,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:36:50,377 INFO L93 Difference]: Finished difference Result 2638 states and 4131 transitions. [2021-12-06 20:36:50,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:36:50,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-12-06 20:36:50,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:36:50,389 INFO L225 Difference]: With dead ends: 2638 [2021-12-06 20:36:50,389 INFO L226 Difference]: Without dead ends: 2522 [2021-12-06 20:36:50,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:36:50,391 INFO L933 BasicCegarLoop]: 1646 mSDtfsCounter, 1519 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1519 SdHoareTripleChecker+Valid, 1750 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:36:50,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1519 Valid, 1750 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:36:50,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2522 states. [2021-12-06 20:36:50,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2522 to 2520. [2021-12-06 20:36:50,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2520 states, 2518 states have (on average 1.5663224781572678) internal successors, (3944), 2519 states have internal predecessors, (3944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:36:50,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2520 states to 2520 states and 3944 transitions. [2021-12-06 20:36:50,464 INFO L78 Accepts]: Start accepts. Automaton has 2520 states and 3944 transitions. Word has length 77 [2021-12-06 20:36:50,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:36:50,465 INFO L470 AbstractCegarLoop]: Abstraction has 2520 states and 3944 transitions. [2021-12-06 20:36:50,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:36:50,465 INFO L276 IsEmpty]: Start isEmpty. Operand 2520 states and 3944 transitions. [2021-12-06 20:36:50,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-06 20:36:50,466 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:36:50,466 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:36:50,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 20:36:50,466 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:36:50,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:36:50,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1153858295, now seen corresponding path program 1 times [2021-12-06 20:36:50,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:36:50,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050714475] [2021-12-06 20:36:50,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:36:50,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:36:50,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:36:50,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:36:50,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:36:50,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050714475] [2021-12-06 20:36:50,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050714475] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:36:50,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:36:50,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:36:50,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626086808] [2021-12-06 20:36:50,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:36:50,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:36:50,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:36:50,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:36:50,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:36:50,515 INFO L87 Difference]: Start difference. First operand 2520 states and 3944 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:36:50,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:36:50,553 INFO L93 Difference]: Finished difference Result 2932 states and 4594 transitions. [2021-12-06 20:36:50,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:36:50,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-12-06 20:36:50,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:36:50,566 INFO L225 Difference]: With dead ends: 2932 [2021-12-06 20:36:50,566 INFO L226 Difference]: Without dead ends: 2714 [2021-12-06 20:36:50,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:36:50,569 INFO L933 BasicCegarLoop]: 1641 mSDtfsCounter, 1515 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 1749 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:36:50,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1515 Valid, 1749 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:36:50,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2714 states. [2021-12-06 20:36:50,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2714 to 2712. [2021-12-06 20:36:50,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2712 states, 2710 states have (on average 1.5660516605166053) internal successors, (4244), 2711 states have internal predecessors, (4244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:36:50,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2712 states to 2712 states and 4244 transitions. [2021-12-06 20:36:50,636 INFO L78 Accepts]: Start accepts. Automaton has 2712 states and 4244 transitions. Word has length 77 [2021-12-06 20:36:50,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:36:50,637 INFO L470 AbstractCegarLoop]: Abstraction has 2712 states and 4244 transitions. [2021-12-06 20:36:50,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:36:50,637 INFO L276 IsEmpty]: Start isEmpty. Operand 2712 states and 4244 transitions. [2021-12-06 20:36:50,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-06 20:36:50,638 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:36:50,638 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:36:50,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 20:36:50,638 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:36:50,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:36:50,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1546824319, now seen corresponding path program 1 times [2021-12-06 20:36:50,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:36:50,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644603336] [2021-12-06 20:36:50,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:36:50,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:36:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:36:50,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:36:50,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:36:50,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644603336] [2021-12-06 20:36:50,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644603336] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:36:50,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:36:50,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:36:50,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53176923] [2021-12-06 20:36:50,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:36:50,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:36:50,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:36:50,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:36:50,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:36:50,685 INFO L87 Difference]: Start difference. First operand 2712 states and 4244 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:36:50,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:36:50,727 INFO L93 Difference]: Finished difference Result 3484 states and 5454 transitions. [2021-12-06 20:36:50,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:36:50,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-12-06 20:36:50,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:36:50,741 INFO L225 Difference]: With dead ends: 3484 [2021-12-06 20:36:50,741 INFO L226 Difference]: Without dead ends: 3074 [2021-12-06 20:36:50,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:36:50,743 INFO L933 BasicCegarLoop]: 1636 mSDtfsCounter, 1511 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:36:50,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1511 Valid, 1748 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:36:50,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3074 states. [2021-12-06 20:36:50,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3074 to 3072. [2021-12-06 20:36:50,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3072 states, 3070 states have (on average 1.5635179153094463) internal successors, (4800), 3071 states have internal predecessors, (4800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:36:50,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3072 states to 3072 states and 4800 transitions. [2021-12-06 20:36:50,805 INFO L78 Accepts]: Start accepts. Automaton has 3072 states and 4800 transitions. Word has length 77 [2021-12-06 20:36:50,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:36:50,806 INFO L470 AbstractCegarLoop]: Abstraction has 3072 states and 4800 transitions. [2021-12-06 20:36:50,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:36:50,806 INFO L276 IsEmpty]: Start isEmpty. Operand 3072 states and 4800 transitions. [2021-12-06 20:36:50,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-06 20:36:50,807 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:36:50,807 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:36:50,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 20:36:50,807 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:36:50,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:36:50,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1884617461, now seen corresponding path program 1 times [2021-12-06 20:36:50,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:36:50,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191796980] [2021-12-06 20:36:50,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:36:50,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:36:50,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:36:50,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:36:50,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:36:50,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191796980] [2021-12-06 20:36:50,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191796980] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:36:50,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:36:50,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:36:50,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485539173] [2021-12-06 20:36:50,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:36:50,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:36:50,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:36:50,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:36:50,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:36:50,847 INFO L87 Difference]: Start difference. First operand 3072 states and 4800 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:36:50,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:36:50,894 INFO L93 Difference]: Finished difference Result 4516 states and 7042 transitions. [2021-12-06 20:36:50,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:36:50,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-12-06 20:36:50,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:36:50,910 INFO L225 Difference]: With dead ends: 4516 [2021-12-06 20:36:50,910 INFO L226 Difference]: Without dead ends: 3746 [2021-12-06 20:36:50,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:36:50,913 INFO L933 BasicCegarLoop]: 1631 mSDtfsCounter, 1507 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 1747 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:36:50,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1507 Valid, 1747 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:36:50,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3746 states. [2021-12-06 20:36:50,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3746 to 3744. [2021-12-06 20:36:50,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3744 states, 3742 states have (on average 1.5563869588455372) internal successors, (5824), 3743 states have internal predecessors, (5824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:36:50,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3744 states to 3744 states and 5824 transitions. [2021-12-06 20:36:50,992 INFO L78 Accepts]: Start accepts. Automaton has 3744 states and 5824 transitions. Word has length 77 [2021-12-06 20:36:50,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:36:50,993 INFO L470 AbstractCegarLoop]: Abstraction has 3744 states and 5824 transitions. [2021-12-06 20:36:50,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:36:50,993 INFO L276 IsEmpty]: Start isEmpty. Operand 3744 states and 5824 transitions. [2021-12-06 20:36:50,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-06 20:36:50,994 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:36:50,994 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:36:50,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 20:36:50,994 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:36:50,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:36:50,995 INFO L85 PathProgramCache]: Analyzing trace with hash -2001711063, now seen corresponding path program 1 times [2021-12-06 20:36:50,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:36:50,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286047301] [2021-12-06 20:36:50,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:36:50,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:36:51,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:36:51,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:36:51,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:36:51,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286047301] [2021-12-06 20:36:51,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286047301] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:36:51,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:36:51,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 20:36:51,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234793870] [2021-12-06 20:36:51,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:36:51,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 20:36:51,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:36:51,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 20:36:51,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:36:51,057 INFO L87 Difference]: Start difference. First operand 3744 states and 5824 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:36:51,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:36:51,583 INFO L93 Difference]: Finished difference Result 21048 states and 32524 transitions. [2021-12-06 20:36:51,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 20:36:51,584 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-12-06 20:36:51,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:36:51,635 INFO L225 Difference]: With dead ends: 21048 [2021-12-06 20:36:51,636 INFO L226 Difference]: Without dead ends: 19606 [2021-12-06 20:36:51,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2021-12-06 20:36:51,643 INFO L933 BasicCegarLoop]: 1579 mSDtfsCounter, 10553 mSDsluCounter, 1813 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10553 SdHoareTripleChecker+Valid, 3392 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:36:51,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10553 Valid, 3392 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:36:51,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19606 states. [2021-12-06 20:36:51,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19606 to 5184. [2021-12-06 20:36:51,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5184 states, 5182 states have (on average 1.540717869548437) internal successors, (7984), 5183 states have internal predecessors, (7984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:36:51,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5184 states to 5184 states and 7984 transitions. [2021-12-06 20:36:51,947 INFO L78 Accepts]: Start accepts. Automaton has 5184 states and 7984 transitions. Word has length 77 [2021-12-06 20:36:51,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:36:51,947 INFO L470 AbstractCegarLoop]: Abstraction has 5184 states and 7984 transitions. [2021-12-06 20:36:51,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:36:51,947 INFO L276 IsEmpty]: Start isEmpty. Operand 5184 states and 7984 transitions. [2021-12-06 20:36:51,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-06 20:36:51,948 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:36:51,948 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] [2021-12-06 20:36:51,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 20:36:51,948 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:36:51,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:36:51,948 INFO L85 PathProgramCache]: Analyzing trace with hash -914675591, now seen corresponding path program 1 times [2021-12-06 20:36:51,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:36:51,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734298302] [2021-12-06 20:36:51,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:36:51,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:36:51,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:36:51,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:36:51,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:36:51,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734298302] [2021-12-06 20:36:51,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734298302] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:36:51,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:36:51,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:36:51,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348987748] [2021-12-06 20:36:51,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:36:51,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:36:51,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:36:51,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:36:51,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:36:52,000 INFO L87 Difference]: Start difference. First operand 5184 states and 7984 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:36:52,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:36:52,197 INFO L93 Difference]: Finished difference Result 10596 states and 16146 transitions. [2021-12-06 20:36:52,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:36:52,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-12-06 20:36:52,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:36:52,212 INFO L225 Difference]: With dead ends: 10596 [2021-12-06 20:36:52,213 INFO L226 Difference]: Without dead ends: 7714 [2021-12-06 20:36:52,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:36:52,218 INFO L933 BasicCegarLoop]: 1580 mSDtfsCounter, 1498 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1671 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:36:52,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1498 Valid, 1671 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:36:52,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7714 states. [2021-12-06 20:36:52,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7714 to 7648. [2021-12-06 20:36:52,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7648 states, 7646 states have (on average 1.508762751765629) internal successors, (11536), 7647 states have internal predecessors, (11536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:36:52,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7648 states to 7648 states and 11536 transitions. [2021-12-06 20:36:52,501 INFO L78 Accepts]: Start accepts. Automaton has 7648 states and 11536 transitions. Word has length 79 [2021-12-06 20:36:52,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:36:52,501 INFO L470 AbstractCegarLoop]: Abstraction has 7648 states and 11536 transitions. [2021-12-06 20:36:52,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:36:52,502 INFO L276 IsEmpty]: Start isEmpty. Operand 7648 states and 11536 transitions. [2021-12-06 20:36:52,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-06 20:36:52,502 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:36:52,502 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] [2021-12-06 20:36:52,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 20:36:52,503 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:36:52,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:36:52,503 INFO L85 PathProgramCache]: Analyzing trace with hash -848182079, now seen corresponding path program 1 times [2021-12-06 20:36:52,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:36:52,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8837762] [2021-12-06 20:36:52,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:36:52,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:36:52,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:36:52,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:36:52,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:36:52,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8837762] [2021-12-06 20:36:52,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8837762] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:36:52,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:36:52,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 20:36:52,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653559643] [2021-12-06 20:36:52,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:36:52,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 20:36:52,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:36:52,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 20:36:52,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:36:52,647 INFO L87 Difference]: Start difference. First operand 7648 states and 11536 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:36:52,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:36:52,973 INFO L93 Difference]: Finished difference Result 12996 states and 19474 transitions. [2021-12-06 20:36:52,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 20:36:52,974 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-12-06 20:36:52,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:36:52,983 INFO L225 Difference]: With dead ends: 12996 [2021-12-06 20:36:52,983 INFO L226 Difference]: Without dead ends: 7650 [2021-12-06 20:36:52,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-12-06 20:36:52,989 INFO L933 BasicCegarLoop]: 1575 mSDtfsCounter, 7790 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7790 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:36:52,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7790 Valid, 2051 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:36:52,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7650 states. [2021-12-06 20:36:53,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7650 to 7648. [2021-12-06 20:36:53,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7648 states, 7646 states have (on average 1.5003923620193564) internal successors, (11472), 7647 states have internal predecessors, (11472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:36:53,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7648 states to 7648 states and 11472 transitions. [2021-12-06 20:36:53,221 INFO L78 Accepts]: Start accepts. Automaton has 7648 states and 11472 transitions. Word has length 79 [2021-12-06 20:36:53,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:36:53,222 INFO L470 AbstractCegarLoop]: Abstraction has 7648 states and 11472 transitions. [2021-12-06 20:36:53,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:36:53,222 INFO L276 IsEmpty]: Start isEmpty. Operand 7648 states and 11472 transitions. [2021-12-06 20:36:53,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-12-06 20:36:53,223 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:36:53,223 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:36:53,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 20:36:53,223 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:36:53,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:36:53,223 INFO L85 PathProgramCache]: Analyzing trace with hash -938563623, now seen corresponding path program 1 times [2021-12-06 20:36:53,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:36:53,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18828571] [2021-12-06 20:36:53,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:36:53,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:36:53,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:36:53,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:36:53,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:36:53,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18828571] [2021-12-06 20:36:53,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18828571] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:36:53,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:36:53,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 20:36:53,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160979971] [2021-12-06 20:36:53,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:36:53,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:36:53,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:36:53,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:36:53,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:36:53,276 INFO L87 Difference]: Start difference. First operand 7648 states and 11472 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:36:53,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:36:53,534 INFO L93 Difference]: Finished difference Result 12994 states and 19345 transitions. [2021-12-06 20:36:53,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 20:36:53,534 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-12-06 20:36:53,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:36:53,542 INFO L225 Difference]: With dead ends: 12994 [2021-12-06 20:36:53,542 INFO L226 Difference]: Without dead ends: 7648 [2021-12-06 20:36:53,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:36:53,547 INFO L933 BasicCegarLoop]: 1535 mSDtfsCounter, 4648 mSDsluCounter, 1520 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4648 SdHoareTripleChecker+Valid, 3055 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:36:53,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4648 Valid, 3055 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:36:53,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7648 states. [2021-12-06 20:36:53,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7648 to 7648. [2021-12-06 20:36:53,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7648 states, 7646 states have (on average 1.4920219722730839) internal successors, (11408), 7647 states have internal predecessors, (11408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:36:53,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7648 states to 7648 states and 11408 transitions. [2021-12-06 20:36:53,802 INFO L78 Accepts]: Start accepts. Automaton has 7648 states and 11408 transitions. Word has length 80 [2021-12-06 20:36:53,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:36:53,802 INFO L470 AbstractCegarLoop]: Abstraction has 7648 states and 11408 transitions. [2021-12-06 20:36:53,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:36:53,803 INFO L276 IsEmpty]: Start isEmpty. Operand 7648 states and 11408 transitions. [2021-12-06 20:36:53,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-12-06 20:36:53,803 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:36:53,804 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:36:53,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 20:36:53,804 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:36:53,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:36:53,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1639628201, now seen corresponding path program 1 times [2021-12-06 20:36:53,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:36:53,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598043688] [2021-12-06 20:36:53,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:36:53,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:36:53,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:36:53,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:36:53,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:36:53,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598043688] [2021-12-06 20:36:53,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598043688] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:36:53,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:36:53,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 20:36:53,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37270639] [2021-12-06 20:36:53,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:36:53,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 20:36:53,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:36:53,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 20:36:53,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:36:53,855 INFO L87 Difference]: Start difference. First operand 7648 states and 11408 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:36:54,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:36:54,227 INFO L93 Difference]: Finished difference Result 11618 states and 17115 transitions. [2021-12-06 20:36:54,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 20:36:54,227 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-12-06 20:36:54,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:36:54,236 INFO L225 Difference]: With dead ends: 11618 [2021-12-06 20:36:54,236 INFO L226 Difference]: Without dead ends: 11616 [2021-12-06 20:36:54,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:36:54,239 INFO L933 BasicCegarLoop]: 1631 mSDtfsCounter, 261 mSDsluCounter, 4748 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 6379 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:36:54,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 6379 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:36:54,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11616 states. [2021-12-06 20:36:54,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11616 to 7840. [2021-12-06 20:36:54,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7840 states, 7838 states have (on average 1.475886705792294) internal successors, (11568), 7839 states have internal predecessors, (11568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:36:54,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7840 states to 7840 states and 11568 transitions. [2021-12-06 20:36:54,532 INFO L78 Accepts]: Start accepts. Automaton has 7840 states and 11568 transitions. Word has length 80 [2021-12-06 20:36:54,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:36:54,533 INFO L470 AbstractCegarLoop]: Abstraction has 7840 states and 11568 transitions. [2021-12-06 20:36:54,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:36:54,533 INFO L276 IsEmpty]: Start isEmpty. Operand 7840 states and 11568 transitions. [2021-12-06 20:36:54,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-12-06 20:36:54,533 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:36:54,533 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:36:54,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 20:36:54,534 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:36:54,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:36:54,534 INFO L85 PathProgramCache]: Analyzing trace with hash 492740282, now seen corresponding path program 1 times [2021-12-06 20:36:54,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:36:54,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851826498] [2021-12-06 20:36:54,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:36:54,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:36:54,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:36:54,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:36:54,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:36:54,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851826498] [2021-12-06 20:36:54,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851826498] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:36:54,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:36:54,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:36:54,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093379884] [2021-12-06 20:36:54,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:36:54,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:36:54,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:36:54,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:36:54,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:36:54,562 INFO L87 Difference]: Start difference. First operand 7840 states and 11568 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:36:54,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:36:54,912 INFO L93 Difference]: Finished difference Result 13479 states and 19766 transitions. [2021-12-06 20:36:54,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:36:54,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-12-06 20:36:54,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:36:54,921 INFO L225 Difference]: With dead ends: 13479 [2021-12-06 20:36:54,921 INFO L226 Difference]: Without dead ends: 10404 [2021-12-06 20:36:54,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:36:54,926 INFO L933 BasicCegarLoop]: 1658 mSDtfsCounter, 1523 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1523 SdHoareTripleChecker+Valid, 1753 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:36:54,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1523 Valid, 1753 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:36:54,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10404 states. [2021-12-06 20:36:55,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10404 to 10402. [2021-12-06 20:36:55,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10402 states, 10400 states have (on average 1.4601923076923078) internal successors, (15186), 10401 states have internal predecessors, (15186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:36:55,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10402 states to 10402 states and 15186 transitions. [2021-12-06 20:36:55,321 INFO L78 Accepts]: Start accepts. Automaton has 10402 states and 15186 transitions. Word has length 81 [2021-12-06 20:36:55,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:36:55,322 INFO L470 AbstractCegarLoop]: Abstraction has 10402 states and 15186 transitions. [2021-12-06 20:36:55,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:36:55,322 INFO L276 IsEmpty]: Start isEmpty. Operand 10402 states and 15186 transitions. [2021-12-06 20:36:55,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-06 20:36:55,326 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:36:55,326 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:36:55,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 20:36:55,326 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:36:55,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:36:55,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1561529476, now seen corresponding path program 1 times [2021-12-06 20:36:55,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:36:55,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541961353] [2021-12-06 20:36:55,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:36:55,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:36:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:36:55,388 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-06 20:36:55,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:36:55,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541961353] [2021-12-06 20:36:55,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541961353] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:36:55,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:36:55,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 20:36:55,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585093084] [2021-12-06 20:36:55,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:36:55,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 20:36:55,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:36:55,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 20:36:55,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:36:55,390 INFO L87 Difference]: Start difference. First operand 10402 states and 15186 transitions. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:36:57,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:36:57,521 INFO L93 Difference]: Finished difference Result 60592 states and 86905 transitions. [2021-12-06 20:36:57,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 20:36:57,522 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-12-06 20:36:57,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:36:57,604 INFO L225 Difference]: With dead ends: 60592 [2021-12-06 20:36:57,604 INFO L226 Difference]: Without dead ends: 52494 [2021-12-06 20:36:57,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-12-06 20:36:57,619 INFO L933 BasicCegarLoop]: 1668 mSDtfsCounter, 8638 mSDsluCounter, 2148 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8638 SdHoareTripleChecker+Valid, 3816 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:36:57,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8638 Valid, 3816 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:36:57,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52494 states. [2021-12-06 20:36:58,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52494 to 18498. [2021-12-06 20:36:58,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18498 states, 18496 states have (on average 1.4421496539792387) internal successors, (26674), 18497 states have internal predecessors, (26674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:36:58,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18498 states to 18498 states and 26674 transitions. [2021-12-06 20:36:58,596 INFO L78 Accepts]: Start accepts. Automaton has 18498 states and 26674 transitions. Word has length 112 [2021-12-06 20:36:58,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:36:58,596 INFO L470 AbstractCegarLoop]: Abstraction has 18498 states and 26674 transitions. [2021-12-06 20:36:58,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:36:58,596 INFO L276 IsEmpty]: Start isEmpty. Operand 18498 states and 26674 transitions. [2021-12-06 20:36:58,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-06 20:36:58,600 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:36:58,600 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:36:58,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 20:36:58,601 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:36:58,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:36:58,601 INFO L85 PathProgramCache]: Analyzing trace with hash 964655004, now seen corresponding path program 1 times [2021-12-06 20:36:58,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:36:58,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630237563] [2021-12-06 20:36:58,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:36:58,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:36:58,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:36:58,663 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 20:36:58,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:36:58,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630237563] [2021-12-06 20:36:58,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630237563] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:36:58,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:36:58,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 20:36:58,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80053078] [2021-12-06 20:36:58,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:36:58,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 20:36:58,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:36:58,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 20:36:58,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:36:58,666 INFO L87 Difference]: Start difference. First operand 18498 states and 26674 transitions. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:37:01,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:37:01,443 INFO L93 Difference]: Finished difference Result 68688 states and 98393 transitions. [2021-12-06 20:37:01,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 20:37:01,444 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-12-06 20:37:01,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:37:01,508 INFO L225 Difference]: With dead ends: 68688 [2021-12-06 20:37:01,508 INFO L226 Difference]: Without dead ends: 60590 [2021-12-06 20:37:01,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-12-06 20:37:01,524 INFO L933 BasicCegarLoop]: 1670 mSDtfsCounter, 8455 mSDsluCounter, 2233 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8455 SdHoareTripleChecker+Valid, 3903 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:37:01,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8455 Valid, 3903 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:37:01,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60590 states. [2021-12-06 20:37:03,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60590 to 30658. [2021-12-06 20:37:03,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30658 states, 30656 states have (on average 1.429605949895616) internal successors, (43826), 30657 states have internal predecessors, (43826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:37:03,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30658 states to 30658 states and 43826 transitions. [2021-12-06 20:37:03,392 INFO L78 Accepts]: Start accepts. Automaton has 30658 states and 43826 transitions. Word has length 112 [2021-12-06 20:37:03,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:37:03,393 INFO L470 AbstractCegarLoop]: Abstraction has 30658 states and 43826 transitions. [2021-12-06 20:37:03,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:37:03,393 INFO L276 IsEmpty]: Start isEmpty. Operand 30658 states and 43826 transitions. [2021-12-06 20:37:03,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-06 20:37:03,398 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:37:03,398 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:37:03,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 20:37:03,398 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:37:03,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:37:03,399 INFO L85 PathProgramCache]: Analyzing trace with hash 2096294844, now seen corresponding path program 1 times [2021-12-06 20:37:03,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:37:03,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57314241] [2021-12-06 20:37:03,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:37:03,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:37:03,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:37:03,467 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 20:37:03,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:37:03,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57314241] [2021-12-06 20:37:03,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57314241] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:37:03,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:37:03,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 20:37:03,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236201689] [2021-12-06 20:37:03,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:37:03,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 20:37:03,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:37:03,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 20:37:03,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:37:03,468 INFO L87 Difference]: Start difference. First operand 30658 states and 43826 transitions. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:37:06,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:37:06,722 INFO L93 Difference]: Finished difference Result 76784 states and 109881 transitions. [2021-12-06 20:37:06,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 20:37:06,723 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-12-06 20:37:06,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:37:06,807 INFO L225 Difference]: With dead ends: 76784 [2021-12-06 20:37:06,807 INFO L226 Difference]: Without dead ends: 68686 [2021-12-06 20:37:06,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-12-06 20:37:06,827 INFO L933 BasicCegarLoop]: 1670 mSDtfsCounter, 8425 mSDsluCounter, 2255 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8425 SdHoareTripleChecker+Valid, 3925 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:37:06,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8425 Valid, 3925 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:37:06,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68686 states. [2021-12-06 20:37:09,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68686 to 38754. [2021-12-06 20:37:09,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38754 states, 38752 states have (on average 1.427384393063584) internal successors, (55314), 38753 states have internal predecessors, (55314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:37:09,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38754 states to 38754 states and 55314 transitions. [2021-12-06 20:37:09,314 INFO L78 Accepts]: Start accepts. Automaton has 38754 states and 55314 transitions. Word has length 112 [2021-12-06 20:37:09,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:37:09,314 INFO L470 AbstractCegarLoop]: Abstraction has 38754 states and 55314 transitions. [2021-12-06 20:37:09,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:37:09,314 INFO L276 IsEmpty]: Start isEmpty. Operand 38754 states and 55314 transitions. [2021-12-06 20:37:09,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-06 20:37:09,319 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:37:09,319 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:37:09,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 20:37:09,319 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:37:09,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:37:09,320 INFO L85 PathProgramCache]: Analyzing trace with hash 860835804, now seen corresponding path program 1 times [2021-12-06 20:37:09,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:37:09,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044411112] [2021-12-06 20:37:09,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:37:09,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:37:09,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:37:09,383 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 20:37:09,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:37:09,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044411112] [2021-12-06 20:37:09,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044411112] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:37:09,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:37:09,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 20:37:09,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915713302] [2021-12-06 20:37:09,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:37:09,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 20:37:09,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:37:09,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 20:37:09,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:37:09,385 INFO L87 Difference]: Start difference. First operand 38754 states and 55314 transitions. Second operand has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:37:13,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:37:13,433 INFO L93 Difference]: Finished difference Result 84880 states and 121369 transitions. [2021-12-06 20:37:13,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 20:37:13,434 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-12-06 20:37:13,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:37:13,522 INFO L225 Difference]: With dead ends: 84880 [2021-12-06 20:37:13,522 INFO L226 Difference]: Without dead ends: 76782 [2021-12-06 20:37:13,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-12-06 20:37:13,544 INFO L933 BasicCegarLoop]: 1670 mSDtfsCounter, 8493 mSDsluCounter, 2296 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8493 SdHoareTripleChecker+Valid, 3966 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:37:13,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8493 Valid, 3966 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:37:13,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76782 states. [2021-12-06 20:37:16,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76782 to 46850. [2021-12-06 20:37:16,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46850 states, 46848 states have (on average 1.4259306693989071) internal successors, (66802), 46849 states have internal predecessors, (66802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:37:16,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46850 states to 46850 states and 66802 transitions. [2021-12-06 20:37:16,691 INFO L78 Accepts]: Start accepts. Automaton has 46850 states and 66802 transitions. Word has length 112 [2021-12-06 20:37:16,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:37:16,691 INFO L470 AbstractCegarLoop]: Abstraction has 46850 states and 66802 transitions. [2021-12-06 20:37:16,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:37:16,691 INFO L276 IsEmpty]: Start isEmpty. Operand 46850 states and 66802 transitions. [2021-12-06 20:37:16,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-06 20:37:16,697 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:37:16,697 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:37:16,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 20:37:16,697 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:37:16,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:37:16,697 INFO L85 PathProgramCache]: Analyzing trace with hash -560159748, now seen corresponding path program 1 times [2021-12-06 20:37:16,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:37:16,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262200809] [2021-12-06 20:37:16,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:37:16,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:37:16,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:37:16,758 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 20:37:16,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:37:16,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262200809] [2021-12-06 20:37:16,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262200809] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:37:16,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:37:16,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 20:37:16,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477647594] [2021-12-06 20:37:16,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:37:16,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 20:37:16,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:37:16,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 20:37:16,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:37:16,759 INFO L87 Difference]: Start difference. First operand 46850 states and 66802 transitions. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:37:21,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:37:21,662 INFO L93 Difference]: Finished difference Result 92976 states and 132857 transitions. [2021-12-06 20:37:21,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 20:37:21,663 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-12-06 20:37:21,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:37:21,753 INFO L225 Difference]: With dead ends: 92976 [2021-12-06 20:37:21,754 INFO L226 Difference]: Without dead ends: 84878 [2021-12-06 20:37:21,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-12-06 20:37:21,775 INFO L933 BasicCegarLoop]: 1668 mSDtfsCounter, 8607 mSDsluCounter, 2237 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8607 SdHoareTripleChecker+Valid, 3905 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:37:21,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8607 Valid, 3905 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:37:21,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84878 states. [2021-12-06 20:37:25,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84878 to 54946. [2021-12-06 20:37:25,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54946 states, 54944 states have (on average 1.424905358182877) internal successors, (78290), 54945 states have internal predecessors, (78290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:37:25,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54946 states to 54946 states and 78290 transitions. [2021-12-06 20:37:25,576 INFO L78 Accepts]: Start accepts. Automaton has 54946 states and 78290 transitions. Word has length 112 [2021-12-06 20:37:25,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:37:25,577 INFO L470 AbstractCegarLoop]: Abstraction has 54946 states and 78290 transitions. [2021-12-06 20:37:25,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:37:25,577 INFO L276 IsEmpty]: Start isEmpty. Operand 54946 states and 78290 transitions. [2021-12-06 20:37:25,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-06 20:37:25,586 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:37:25,586 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:37:25,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 20:37:25,586 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:37:25,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:37:25,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1259528020, now seen corresponding path program 1 times [2021-12-06 20:37:25,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:37:25,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040598293] [2021-12-06 20:37:25,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:37:25,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:37:25,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:37:25,622 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:37:25,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:37:25,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040598293] [2021-12-06 20:37:25,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040598293] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:37:25,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:37:25,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:37:25,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023284738] [2021-12-06 20:37:25,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:37:25,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:37:25,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:37:25,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:37:25,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:37:25,624 INFO L87 Difference]: Start difference. First operand 54946 states and 78290 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:37:27,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:37:27,916 INFO L93 Difference]: Finished difference Result 91592 states and 130748 transitions. [2021-12-06 20:37:27,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:37:27,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2021-12-06 20:37:27,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:37:27,957 INFO L225 Difference]: With dead ends: 91592 [2021-12-06 20:37:27,958 INFO L226 Difference]: Without dead ends: 38950 [2021-12-06 20:37:27,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:37:27,987 INFO L933 BasicCegarLoop]: 1630 mSDtfsCounter, 62 mSDsluCounter, 1566 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 3196 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:37:27,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 3196 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:37:28,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38950 states. [2021-12-06 20:37:30,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38950 to 38948. [2021-12-06 20:37:30,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38948 states, 38946 states have (on average 1.4286704668001848) internal successors, (55641), 38947 states have internal predecessors, (55641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:37:30,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38948 states to 38948 states and 55641 transitions. [2021-12-06 20:37:30,442 INFO L78 Accepts]: Start accepts. Automaton has 38948 states and 55641 transitions. Word has length 114 [2021-12-06 20:37:30,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:37:30,443 INFO L470 AbstractCegarLoop]: Abstraction has 38948 states and 55641 transitions. [2021-12-06 20:37:30,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:37:30,443 INFO L276 IsEmpty]: Start isEmpty. Operand 38948 states and 55641 transitions. [2021-12-06 20:37:30,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-06 20:37:30,448 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:37:30,448 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:37:30,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 20:37:30,449 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:37:30,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:37:30,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1037894815, now seen corresponding path program 1 times [2021-12-06 20:37:30,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:37:30,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373304422] [2021-12-06 20:37:30,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:37:30,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:37:30,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:37:30,504 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 20:37:30,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:37:30,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373304422] [2021-12-06 20:37:30,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373304422] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:37:30,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:37:30,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 20:37:30,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968942966] [2021-12-06 20:37:30,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:37:30,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 20:37:30,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:37:30,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 20:37:30,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:37:30,506 INFO L87 Difference]: Start difference. First operand 38948 states and 55641 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:37:34,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:37:34,895 INFO L93 Difference]: Finished difference Result 72754 states and 104032 transitions. [2021-12-06 20:37:34,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 20:37:34,896 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-12-06 20:37:34,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:37:34,965 INFO L225 Difference]: With dead ends: 72754 [2021-12-06 20:37:34,965 INFO L226 Difference]: Without dead ends: 67120 [2021-12-06 20:37:34,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-12-06 20:37:34,978 INFO L933 BasicCegarLoop]: 1667 mSDtfsCounter, 8581 mSDsluCounter, 2175 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8581 SdHoareTripleChecker+Valid, 3842 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:37:34,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8581 Valid, 3842 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:37:35,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67120 states. [2021-12-06 20:37:38,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67120 to 44580. [2021-12-06 20:37:38,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44580 states, 44578 states have (on average 1.4276324644443448) internal successors, (63641), 44579 states have internal predecessors, (63641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:37:38,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44580 states to 44580 states and 63641 transitions. [2021-12-06 20:37:38,133 INFO L78 Accepts]: Start accepts. Automaton has 44580 states and 63641 transitions. Word has length 114 [2021-12-06 20:37:38,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:37:38,133 INFO L470 AbstractCegarLoop]: Abstraction has 44580 states and 63641 transitions. [2021-12-06 20:37:38,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:37:38,133 INFO L276 IsEmpty]: Start isEmpty. Operand 44580 states and 63641 transitions. [2021-12-06 20:37:38,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-06 20:37:38,139 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:37:38,139 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:37:38,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-06 20:37:38,140 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:37:38,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:37:38,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1184656150, now seen corresponding path program 1 times [2021-12-06 20:37:38,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:37:38,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807112068] [2021-12-06 20:37:38,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:37:38,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:37:38,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:37:38,314 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:37:38,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:37:38,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807112068] [2021-12-06 20:37:38,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807112068] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:37:38,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344857975] [2021-12-06 20:37:38,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:37:38,315 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:37:38,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d4d4fd-d1ba-4256-ad87-71f16e43d277/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:37:38,316 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d4d4fd-d1ba-4256-ad87-71f16e43d277/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:37:38,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d4d4fd-d1ba-4256-ad87-71f16e43d277/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 20:37:38,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:37:38,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 20:37:38,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:37:38,687 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 20:37:38,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:37:38,910 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 20:37:38,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344857975] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:37:38,910 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:37:38,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4, 4] total 18 [2021-12-06 20:37:38,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664766426] [2021-12-06 20:37:38,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:37:38,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-06 20:37:38,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:37:38,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-06 20:37:38,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-12-06 20:37:38,913 INFO L87 Difference]: Start difference. First operand 44580 states and 63641 transitions. Second operand has 18 states, 18 states have (on average 18.22222222222222) internal successors, (328), 18 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:38:31,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:38:31,704 INFO L93 Difference]: Finished difference Result 676197 states and 952428 transitions. [2021-12-06 20:38:31,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2021-12-06 20:38:31,704 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 18.22222222222222) internal successors, (328), 18 states have internal predecessors, (328), 0 states have call successors, (0), 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 115 [2021-12-06 20:38:31,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:38:32,585 INFO L225 Difference]: With dead ends: 676197 [2021-12-06 20:38:32,585 INFO L226 Difference]: Without dead ends: 633955 [2021-12-06 20:38:32,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8270 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=3332, Invalid=16408, Unknown=0, NotChecked=0, Total=19740 [2021-12-06 20:38:32,713 INFO L933 BasicCegarLoop]: 1652 mSDtfsCounter, 19225 mSDsluCounter, 6156 mSDsCounter, 0 mSdLazyCounter, 1940 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19225 SdHoareTripleChecker+Valid, 7808 SdHoareTripleChecker+Invalid, 2233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 1940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-06 20:38:32,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19225 Valid, 7808 Invalid, 2233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 1940 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-06 20:38:33,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633955 states. [2021-12-06 20:39:00,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633955 to 313316. [2021-12-06 20:39:01,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313316 states, 313314 states have (on average 1.3791659485372503) internal successors, (432112), 313315 states have internal predecessors, (432112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:39:01,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313316 states to 313316 states and 432112 transitions. [2021-12-06 20:39:01,870 INFO L78 Accepts]: Start accepts. Automaton has 313316 states and 432112 transitions. Word has length 115 [2021-12-06 20:39:01,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:39:01,870 INFO L470 AbstractCegarLoop]: Abstraction has 313316 states and 432112 transitions. [2021-12-06 20:39:01,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 18.22222222222222) internal successors, (328), 18 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:39:01,871 INFO L276 IsEmpty]: Start isEmpty. Operand 313316 states and 432112 transitions. [2021-12-06 20:39:01,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-06 20:39:01,879 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:39:01,879 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:39:01,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d4d4fd-d1ba-4256-ad87-71f16e43d277/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 20:39:02,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d4d4fd-d1ba-4256-ad87-71f16e43d277/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-12-06 20:39:02,081 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:39:02,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:39:02,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1016934777, now seen corresponding path program 1 times [2021-12-06 20:39:02,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:39:02,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013236505] [2021-12-06 20:39:02,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:39:02,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:39:02,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:39:02,276 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:39:02,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:39:02,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013236505] [2021-12-06 20:39:02,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013236505] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:39:02,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703831804] [2021-12-06 20:39:02,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:39:02,277 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:39:02,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d4d4fd-d1ba-4256-ad87-71f16e43d277/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:39:02,278 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d4d4fd-d1ba-4256-ad87-71f16e43d277/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:39:02,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d4d4fd-d1ba-4256-ad87-71f16e43d277/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 20:39:02,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:39:02,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-06 20:39:02,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:39:02,986 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:39:02,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:39:03,607 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:39:03,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703831804] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:39:03,607 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:39:03,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 29 [2021-12-06 20:39:03,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183991625] [2021-12-06 20:39:03,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:39:03,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-06 20:39:03,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:39:03,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-06 20:39:03,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=766, Unknown=0, NotChecked=0, Total=870 [2021-12-06 20:39:03,609 INFO L87 Difference]: Start difference. First operand 313316 states and 432112 transitions. Second operand has 30 states, 30 states have (on average 11.0) internal successors, (330), 29 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)